Pennsylvania / Waters /
Monongahela River
River in Pennsylvania, past Borough of Masontown, Braddock Boro, Brownsville, Bunola, California, Centerville, Centerville Boro, Charleroi, City of Monongahela, City of Pittsburgh, Dunkard Township and East Bethlehem Township
Current status
No current status shown
No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches. Why this status, and its source
This badge describes the water outline. Check the downstream stretches on the map and below for discharge statuses.
Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.
Square boat markers mark boat launches listed by OpenBoatLaunch. Outlined boat markers are marinas and clubs: not public access.
Bookmark this water page and check it before each trip · Report a missing notice or error
About this status
Why this status: No current status: no report we track sets a status on this water outline now.
How long each status lasts, and why
Sources checked: ALCOSAN sewer overflow advisories (last successful check 2026-11-02 21:20 UTC). Status by DirtyWaterWatch, updated 2026-11-02 21:26 UTC.
No status does not mean the water is safe. Follow posted signs and local health advice.
Updated .
Estimated downstream stretches on Monongahela River
No downstream stretch has a current status here as of Nov 2, 2026, 4:26 PM EST. Check the reports below.
The last 90 days
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: Allegheny County Sanitary Authority 2
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 3 reports: Allegheny County Sanitary Authority 3
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: Allegheny County Sanitary Authority 2
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 3 reports: Allegheny County Sanitary Authority 3
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Allegheny County Sanitary Authority 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 2 reports: Allegheny County Sanitary Authority 2
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: Allegheny County Sanitary Authority 2
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 3 reports: Allegheny County Sanitary Authority 3
Show records
The records are also in the report table on this page.
- Caution: to 3 reports: Allegheny County Sanitary Authority 3
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 9 reports: Allegheny County Sanitary Authority 9
Show records
The records are also in the report table on this page.
- Combined sewer overflow (CSO), started Aug 11, 2026, 10:38 AM EDT
- Combined sewer overflow (CSO), started Aug 11, 2026, 3:58 AM EDT
- Combined sewer overflow (CSO), started Aug 10, 2026, 11:48 AM EDT
- Combined sewer overflow (CSO), started Aug 9, 2026, 12:11 AM EDT
- Combined sewer overflow (CSO), started Aug 7, 2026, 7:24 PM EDT
- Combined sewer overflow (CSO), started Aug 7, 2026, 3:44 PM EDT
- Combined sewer overflow (CSO), started Aug 7, 2026, 9:47 AM EDT
- Combined sewer overflow (CSO), started Aug 5, 2026, 7:10 PM EDT
- Combined sewer overflow (CSO), started Aug 2, 2026, 6:40 PM EDT
Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-02 21:26 UTC.
Reported discharges over time
- Discharges affecting the Monongahela River in Pennsylvania, last 12 months6666 affecting this stretch: 66 reported in Pennsylvania, none arriving from upstreamDecember 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once. Arriving discharges are estimated from modeled downstream reaches.
- Days with a discharge affecting the Monongahela River in Pennsylvania, last 12 months54Reported on the Monongahela River in Pennsylvania: 54 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026A day counts once however many discharges were under way on it. Verified reports where available, else notices; revisions and duplicates counted once.
- Hours with a discharge or advisory status on the Monongahela River in Pennsylvania, last 12 months2,244Reported on the Monongahela River in Pennsylvania: 2,244 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
- 2026 season with a discharge or advisory status on the Monongahela River in Pennsylvania42%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
- Records behind the last-90-days strip for the Monongahela River in Pennsylvania25Reported on the Monongahela River in Pennsylvania: 25 · Arriving from outfalls upstream, estimated: 0last 90 daysEvery distinct record the strip lists for its red, yellow and unresolved hours, notices and unresolved reports included; counted as the strip counts them.
Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.
Reported discharges per month
134 reported discharges, January 2022 to November 2026.
- Combined sewer overflow
- Sanitary sewer overflow
- Treatment bypass, blended or other
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to September 2024.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Month | Combined sewer overflow | Sanitary sewer overflow | Treatment bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| January 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| February 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| March 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| April 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| May 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| June 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| July 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| August 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| September 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| October 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| November 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| December 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| January 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| February 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| March 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| April 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| May 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| June 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| July 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| August 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| September 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| October 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| November 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| December 2023 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| January 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| February 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| March 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| April 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| May 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| June 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| July 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| August 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| September 2024 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| October 2024 | 2 | 0 | 0 | 2 | Source records | Incomplete source coverage |
| November 2024 | 0 | 0 | 0 | 0 | ||
| December 2024 | 0 | 0 | 0 | 0 | ||
| January 2025 | 0 | 0 | 0 | 0 | ||
| February 2025 | 0 | 0 | 0 | 0 | ||
| March 2025 | 0 | 0 | 0 | 0 | ||
| April 2025 | 10 | 0 | 0 | 10 | Source records | |
| May 2025 | 16 | 0 | 0 | 16 | Source records | |
| June 2025 | 19 | 0 | 0 | 19 | Source records | |
| July 2025 | 7 | 0 | 0 | 7 | Source records | |
| August 2025 | 4 | 0 | 0 | 4 | Source records | |
| September 2025 | 5 | 0 | 0 | 5 | Source records | |
| October 2025 | 5 | 0 | 0 | 5 | Source records | |
| November 2025 | 0 | 0 | 0 | 0 | ||
| December 2025 | 0 | 0 | 0 | 0 | ||
| January 2026 | 0 | 0 | 0 | 0 | ||
| February 2026 | 0 | 0 | 0 | 0 | ||
| March 2026 | 0 | 0 | 1 | 1 | Source records | |
| April 2026 | 10 | 0 | 1 | 11 | Source records | |
| May 2026 | 8 | 0 | 0 | 8 | Source records | |
| June 2026 | 10 | 0 | 0 | 10 | Source records | |
| July 2026 | 9 | 0 | 0 | 9 | Source records | |
| August 2026 | 16 | 0 | 0 | 16 | Source records | |
| September 2026 | 9 | 0 | 0 | 9 | Source records | |
| October 2026 | 2 | 0 | 0 | 2 | Source records | |
| November 2026 | 0 | 0 | 0 | 0 |
Hours with a discharge or advisory status per month
Hours when this water had a discharge or advisory status under DirtyWaterWatch rules.
- Discharge or advisory reported
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to September 2024. 1 discharge report has no end time and is not marked ongoing; under DirtyWaterWatch rules it shows caution, not a discharge or advisory status, and adds no hours here.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Month | Hours with a discharge or advisory status | Hours from post-discharge periods | Hours in the month | Coverage |
|---|---|---|---|---|
| January 2022 | 0 | 0 | 744 | No tracked source for this period |
| February 2022 | 0 | 0 | 672 | No tracked source for this period |
| March 2022 | 0 | 0 | 744 | No tracked source for this period |
| April 2022 | 0 | 0 | 720 | No tracked source for this period |
| May 2022 | 0 | 0 | 744 | No tracked source for this period |
| June 2022 | 0 | 0 | 720 | No tracked source for this period |
| July 2022 | 0 | 0 | 744 | No tracked source for this period |
| August 2022 | 0 | 0 | 744 | No tracked source for this period |
| September 2022 | 0 | 0 | 720 | No tracked source for this period |
| October 2022 | 0 | 0 | 744 | No tracked source for this period |
| November 2022 | 0 | 0 | 720 | No tracked source for this period |
| December 2022 | 0 | 0 | 744 | No tracked source for this period |
| January 2023 | 0 | 0 | 744 | No tracked source for this period |
| February 2023 | 0 | 0 | 672 | No tracked source for this period |
| March 2023 | 0 | 0 | 744 | No tracked source for this period |
| April 2023 | 0 | 0 | 720 | No tracked source for this period |
| May 2023 | 0 | 0 | 744 | No tracked source for this period |
| June 2023 | 0 | 0 | 720 | No tracked source for this period |
| July 2023 | 0 | 0 | 744 | No tracked source for this period |
| August 2023 | 0 | 0 | 744 | No tracked source for this period |
| September 2023 | 0 | 0 | 720 | No tracked source for this period |
| October 2023 | 0 | 0 | 744 | No tracked source for this period |
| November 2023 | 0 | 0 | 720 | No tracked source for this period |
| December 2023 | 0 | 0 | 744 | No tracked source for this period |
| January 2024 | 0 | 0 | 744 | No tracked source for this period |
| February 2024 | 0 | 0 | 696 | No tracked source for this period |
| March 2024 | 0 | 0 | 744 | No tracked source for this period |
| April 2024 | 0 | 0 | 720 | No tracked source for this period |
| May 2024 | 0 | 0 | 744 | No tracked source for this period |
| June 2024 | 0 | 0 | 720 | No tracked source for this period |
| July 2024 | 0 | 0 | 744 | No tracked source for this period |
| August 2024 | 0 | 0 | 744 | No tracked source for this period |
| September 2024 | 0 | 0 | 720 | No tracked source for this period |
| October 2024 | 100 | 100 | 744 | Incomplete source coverage |
| November 2024 | 0 | 0 | 720 | |
| December 2024 | 0 | 0 | 744 | |
| January 2025 | 0 | 0 | 744 | |
| February 2025 | 0 | 0 | 672 | |
| March 2025 | 0 | 0 | 744 | |
| April 2025 | 393 | 393 | 720 | |
| May 2025 | 432 | 432 | 744 | |
| June 2025 | 474 | 474 | 720 | |
| July 2025 | 307 | 307 | 744 | |
| August 2025 | 166 | 166 | 744 | |
| September 2025 | 154 | 154 | 720 | |
| October 2025 | 140 | 140 | 744 | |
| November 2025 | 28 | 28 | 720 | |
| December 2025 | 0 | 0 | 744 | |
| January 2026 | 0 | 0 | 744 | |
| February 2026 | 0 | 0 | 672 | |
| March 2026 | 50 | 50 | 744 | |
| April 2026 | 342 | 342 | 720 | |
| May 2026 | 315 | 315 | 744 | |
| June 2026 | 336 | 336 | 720 | |
| July 2026 | 286 | 286 | 744 | |
| August 2026 | 481 | 481 | 744 | |
| September 2026 | 328 | 328 | 720 | |
| October 2026 | 106 | 106 | 744 | |
| November 2026 | 0 | 0 | 42 |
Days with a reported discharge per month
A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to September 2024.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Month | Days with a reported discharge | Coverage |
|---|---|---|
| January 2022 | 0 | No tracked source for this period |
| February 2022 | 0 | No tracked source for this period |
| March 2022 | 0 | No tracked source for this period |
| April 2022 | 0 | No tracked source for this period |
| May 2022 | 0 | No tracked source for this period |
| June 2022 | 0 | No tracked source for this period |
| July 2022 | 0 | No tracked source for this period |
| August 2022 | 0 | No tracked source for this period |
| September 2022 | 0 | No tracked source for this period |
| October 2022 | 0 | No tracked source for this period |
| November 2022 | 0 | No tracked source for this period |
| December 2022 | 0 | No tracked source for this period |
| January 2023 | 0 | No tracked source for this period |
| February 2023 | 0 | No tracked source for this period |
| March 2023 | 0 | No tracked source for this period |
| April 2023 | 0 | No tracked source for this period |
| May 2023 | 0 | No tracked source for this period |
| June 2023 | 0 | No tracked source for this period |
| July 2023 | 0 | No tracked source for this period |
| August 2023 | 0 | No tracked source for this period |
| September 2023 | 0 | No tracked source for this period |
| October 2023 | 0 | No tracked source for this period |
| November 2023 | 0 | No tracked source for this period |
| December 2023 | 0 | No tracked source for this period |
| January 2024 | 0 | No tracked source for this period |
| February 2024 | 0 | No tracked source for this period |
| March 2024 | 0 | No tracked source for this period |
| April 2024 | 0 | No tracked source for this period |
| May 2024 | 0 | No tracked source for this period |
| June 2024 | 0 | No tracked source for this period |
| July 2024 | 0 | No tracked source for this period |
| August 2024 | 0 | No tracked source for this period |
| September 2024 | 0 | No tracked source for this period |
| October 2024 | 3 | Incomplete source coverage |
| November 2024 | 0 | |
| December 2024 | 0 | |
| January 2025 | 0 | |
| February 2025 | 0 | |
| March 2025 | 0 | |
| April 2025 | 12 | |
| May 2025 | 13 | |
| June 2025 | 15 | |
| July 2025 | 8 | |
| August 2025 | 3 | |
| September 2025 | 4 | |
| October 2025 | 4 | |
| November 2025 | 0 | |
| December 2025 | 0 | |
| January 2026 | 0 | |
| February 2026 | 0 | |
| March 2026 | 1 | |
| April 2026 | 10 | |
| May 2026 | 7 | |
| June 2026 | 8 | |
| July 2026 | 6 | |
| August 2026 | 10 | |
| September 2026 | 10 | |
| October 2026 | 2 | |
| November 2026 | 0 |
Reported volume per year
Gallons (axis: K thousand, M million), summed from the 1 report that gave a volume as a number (133 did not).
- Incomplete source coverage
133 of 134 discharge reports gave no volume as a number; only numbers are summed.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Year | Reported volume, gallons | Reports with a volume | Reports without a volume | Coverage |
|---|---|---|---|---|
| 2024 | 0 | 0 | 2 | Incomplete source coverage |
| 2025 | 0 | 0 | 66 | |
| 2026 | 20,000,000 | 1 | 65 |
Hours with a discharge or advisory status per year
Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.
- Discharge or advisory reported
- Incomplete source coverage
1 discharge report has no end time and is not marked ongoing; under DirtyWaterWatch rules it shows caution, not a discharge or advisory status, and adds no hours here.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Year | Hours with a discharge or advisory status | Share of the year | Coverage |
|---|---|---|---|
| 2024 | 100 | 1.1% | Incomplete source coverage |
| 2025 | 2,094 | 23.9% | |
| 2026 | 2,244 | 30.6% |
Reported discharges by calendar month, all years
Every counted discharge report, by the calendar month it began.
Months are summed over every year a tracked source covers; the table gives the number of years behind each month.
Source: pa-alcosan. Records cover October 6, 2024 to November 2, 2026.
Show table
| Month | Reported discharges | Years of records |
|---|---|---|
| January | 0 | 2 |
| February | 0 | 2 |
| March | 1 | 2 |
| April | 21 | 2 |
| May | 24 | 2 |
| June | 29 | 2 |
| July | 16 | 2 |
| August | 20 | 2 |
| September | 14 | 2 |
| October | 9 | 3 |
| November | 0 | 3 |
| December | 0 | 2 |
How these charts are counted
We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.
- pa-alcosan: records from October 6, 2024 to the latest update
Reports linked to Monongahela River
| Start | End | Sewer operator | Outlet | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026, 9:09 AM EDT | Oct 14, 2026, 9:32 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20261014T0909, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Oct 14, 2026, 9:09 AM EDT · Map |
| Oct 11, 2026, 3:17 AM EDT | Oct 11, 2026, 12:31 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20261011T0317, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Oct 11, 2026, 3:17 AM EDT · Map |
| Sep 21, 2026, 10:31 PM EDT | Sep 22, 2026, 1:44 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260921T2231, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 21, 2026, 10:31 PM EDT · Map |
| Sep 21, 2026, 2:21 PM EDT | Sep 21, 2026, 3:38 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260921T1421, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 21, 2026, 2:21 PM EDT · Map |
| Sep 20, 2026, 3:48 PM EDT | Sep 20, 2026, 4:12 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260920T1548, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 20, 2026, 3:48 PM EDT · Map |
| Sep 16, 2026, 7:57 AM EDT | Sep 16, 2026, 8:24 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260916T0757, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 16, 2026, 7:57 AM EDT · Map |
| Sep 13, 2026, 7:20 PM EDT | Sep 13, 2026, 9:03 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260913T1920, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 13, 2026, 7:20 PM EDT · Map |
| Sep 13, 2026, 1:03 AM EDT | Sep 13, 2026, 5:51 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260913T0103, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 13, 2026, 1:03 AM EDT · Map |
| Sep 12, 2026, 3:59 PM EDT | Sep 12, 2026, 5:37 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260912T1559, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 12, 2026, 3:59 PM EDT · Map |
| Sep 9, 2026, 9:19 PM EDT | Sep 10, 2026, 1:48 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260909T2119, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 9, 2026, 9:19 PM EDT · Map |
| Sep 3, 2026, 6:30 PM EDT | Sep 4, 2026, 2:12 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260903T1830, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Sep 3, 2026, 6:30 PM EDT · Map |
| Aug 22, 2026, 5:47 PM EDT | Aug 22, 2026, 8:49 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260822T1747, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 22, 2026, 5:47 PM EDT · Map |
| Aug 20, 2026, 7:15 AM EDT | Aug 20, 2026, 9:46 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260820T0715, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 20, 2026, 7:15 AM EDT · Map |
| Aug 16, 2026, 3:48 PM EDT | Aug 16, 2026, 8:19 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260816T1548, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 16, 2026, 3:48 PM EDT · Map |
| Aug 16, 2026, 4:30 AM EDT | Aug 16, 2026, 6:16 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260816T0430, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 16, 2026, 4:30 AM EDT · Map |
| Aug 14, 2026, 1:36 PM EDT | Aug 14, 2026, 4:31 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260814T1336, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 14, 2026, 1:36 PM EDT · Map |
| Aug 11, 2026, 10:38 AM EDT | Aug 11, 2026, 12:08 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260811T1038, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 11, 2026, 10:38 AM EDT · Map |
| Aug 11, 2026, 3:58 AM EDT | Aug 11, 2026, 5:41 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260811T0358, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 11, 2026, 3:58 AM EDT · Map |
| Aug 10, 2026, 11:48 AM EDT | Aug 10, 2026, 1:23 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260810T1148, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 10, 2026, 11:48 AM EDT · Map |
| Aug 9, 2026, 12:11 AM EDT | Aug 9, 2026, 1:58 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260809T0011, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 9, 2026, 12:11 AM EDT · Map |
| Aug 7, 2026, 7:24 PM EDT | Aug 7, 2026, 10:01 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260807T1924, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 7, 2026, 7:24 PM EDT · Map |
| Aug 7, 2026, 3:44 PM EDT | Aug 7, 2026, 5:38 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260807T1544, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 7, 2026, 3:44 PM EDT · Map |
| Aug 7, 2026, 9:47 AM EDT | Aug 7, 2026, 10:47 AM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260807T0947, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 7, 2026, 9:47 AM EDT · Map |
| Aug 5, 2026, 7:10 PM EDT | Aug 5, 2026, 8:48 PM EDT | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260805T1910, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 5, 2026, 7:10 PM EDT · Map |
| Aug 2, 2026, 6:40 PM EDT | end time not reported | Allegheny County Sanitary Authority (ALCOSAN) | Not provided | Combined sewer overflow (CSO) | volume not reported | ALCOSAN sewer overflow advisories, record soak-20260802T1840, the source gives no report time, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Combined sewer overflow (CSO), Allegheny County Sanitary Authority (ALCOSAN), Aug 2, 2026, 6:40 PM EDT · Map |
Showing the latest 25 records of 134 records. See them all with filters.
All reports in Pennsylvania by year: 2026 (66 here) · 2025 (66 here) · 2024 (2 here)
Wastewater outlets on this water
Outfall: a pipe or outlet where wastewater enters a water body.
No wastewater outlet in our records is linked to this water.
Boat launches
- 4th Street, Pittsburgh · Carry-in launch (canoe and kayak)
- Boat Docks, Centerville · Boat ramp
- Braddock Public Ramp, Braddock Boro · Boat ramp
- Brownsville Riverside Wharf Park · Boat ramp
- California Access · Boat ramp
- East Fredricktown, Luzerne Township · Boat ramp
- Elizabeth Access, Elizabeth Boro · Boat ramp
- Glassport Riverfront Park, Glassport Boro · Boat ramp
- Glassworks, Monongahela Township · Boat ramp
- Isabella, Luzerne Township · Boat ramp
- Magic City Riverfront Park boat launch, Charleroi · Boat ramp
- Masontown Riverside Recreation, Borough of Masontown · Boat ramp
- Monessan Access · Boat ramp
- Monongahela * closed indefinitely for repairs, Monessan Township · Boat ramp
- Monongahela Wharf, City of Pittsburgh · Boat ramp
- Monongehela Aquatorium, City of Monongahela · Boat ramp
- New Geneva · Boat ramp
- Nine Mile Run, Homestead · Boat ramp
- Point Marion, Point Marion Boro · Boat ramp
- Rice's Landing, Rices Landing Boro · Boat ramp
- Southside Riverfront Park, City of Pittsburgh · Boat ramp
- Southside Riverfront Park 2, City of Pittsburgh · Boat ramp
- Speers Landing, Speers Boro · Boat ramp
- Sunnyside/Gallatin · Boat ramp
- West Brownsville · Boat ramp
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Monongahela River on OpenBoatLaunch
Marinas and clubs on this water
Marina or club: not public access.
- Birdies Landing, Glassport · Carry-in launch (canoe and kayak) · website
- Carousel/Maring, Bunola · Boat ramp · run by Gary Sloan · website
- Chuck's Boat Club, German Township · Boat ramp · run by Charles Daruda · website
- Dammieco Marina, Centerville Boro · Boat ramp · run by Pecin's Leasing- Sullivan Dameico · website
- Elrama Street · Boat ramp · website
- Howard Street, Monessen Boro · Boat ramp · website
- Irving Works Beach, West Mifflin · Boat ramp · website
- Monongahela Valley Speed Boat Club, Glassport · Carry-in launch (canoe and kayak) · website
- Packrall's Bay Restaraunt, East Bethlehem Township · Boat ramp · run by Fran Packrell · website
- South Side Marina, Pittsburg · Boat ramp · run by Fox Chapel Marine · website
- Station Square, City of Pittsburgh · Carry-in launch (canoe and kayak) · run by Forest City Enterprise · website
- Two Rivers Marina, Dunkard Township · Boat ramp · run by SJM Diversified Trading · website
Nearby waters
- Dutch Fork Lake, PA No current status shown about 48 km away
- Ohio River, PA No current status shown about 69 km away
- Lake Somerset, PA No current status shown about 74 km away
Sources covering this water
- ALCOSAN sewer overflow advisories · Latest check succeeded · Last successful check: 2026-11-02 21:20 UTC
134 records linked to this water. Updated .