States /
Reported sewage discharges in Pennsylvania
Updated . We track 43 waters in Pennsylvania: 2 with a discharge or advisory status, 0 with caution, and 0 with no confirmed discharge end. 41 have no current status on their water outline. 2 discharge records dated within the last 30 days.
Source: DirtyWaterWatch statuses from the sources checked automatically, listed below. Updated 2026-11-02 21:26 UTC.
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.
Discharge or advisory reported 2 waters
- Latest record: Cyanobacteria advisory (harmful blue-green algae), · 0 sewer operators
- Latest record: Cyanobacteria advisory (harmful blue-green algae), · 0 sewer operators
No current status shown 41 waters
- Allegheny River
- Beltzville Lake
- Blue Marsh Lake
- Briar Creek Reservoir
- Chambers Lake
- Conneaut Lake
- Dutch Fork Lake
- Frances Slocum Lake
- Giving Pond
- Glendale Lake
- Green Lane Reservoir
- Hammond Lake
- Harveys Lake
- Hills Creek Lake
- Lake Chillisquauqe
- Lake Erie
- Lake Galena
- Lake Luxembourg
- Lake Somerset
- Lake Towhee
- Lake Wallenpaupack
- Lake Wilhelm
- Lake Winola
- Lions Lake
- Long Pine Run Reservoir
- Marsh Creek Reservoir
- Middle Creek Reservoir
- Monongahela River
- Ohio River
- Prompton Lake
- Pymatuning Reservoir
- Shenango River Lake
- Speedwell Forge Lake
- Struble Lake
- Sweet Arrow Lake
- Sylvan Lake
- Tamarack Lake
- Tuscarora Lake
- Walker Lake
- White Deer Lake
- Woodcock Creek Lake
Sewer operators
Get local alerts from a sewer operator: open its page for its public alert link.
No sewer operators are listed here yet.
What this page covers
Post-discharge periods and their sources
No period: a water is red only while the discharge is reported ongoing. Pennsylvania sets no public notice period: operators report to DEP within 4 hours and in writing within 5 days (25 Pa. Code § 92a.41(b)) and notify known downstream users "if reasonably possible" (§ 91.33); CSO public notification is a permit control with no deadline; Erie alone falls under the federal Great Lakes rule (40 CFR 122.38: public notice within 4 hours)
Source: 25 Pa. Code §§ 91.33, 92a.41, 92a.47; 40 CFR 122.38. DirtyWaterWatch applies the period described here.
Pennsylvania's period on the methods page · How long each status lasts, in every state
Sources checked automatically
No source for Pennsylvania is checked automatically yet.
The last 90 days in Pennsylvania
- Discharge or advisory reported: to the latest update 111 reports: City of Erie Bureau of Sewers on Lake Erie 45, Allegheny County Sanitary Authority on Allegheny River 25, Pennsylvania Department of Health HAB dashboard on Octoraro Lake 2, Pennsylvania Department of Health HAB dashboard on Shenango River Lake 2, Pennsylvania Department of Health HAB dashboard on Walker Lake 2, Pennsylvania Department of Health HAB dashboard on Beltzville Lake 1, and 34 more reports from 34 more
Show records
The records are also in the report table on this page.
- Combined sewer overflow (CSO), started Oct 14, 2026, 9:09 AM EDT
- Combined sewer overflow (CSO), started Oct 11, 2026, 3:17 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Oct 7, 2026, 11:44 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Sep 22, 2026, 11:40 AM EDT
- Combined sewer overflow (CSO), started Sep 21, 2026, 10:31 PM EDT
- Combined sewer overflow (CSO), started Sep 21, 2026, 2:21 PM EDT
- Combined sewer overflow (CSO), started Sep 20, 2026, 3:48 PM EDT
- Combined sewer overflow (CSO), started Sep 16, 2026, 7:57 AM EDT
- Combined sewer overflow (CSO), started Sep 13, 2026, 7:20 PM EDT
- Combined sewer overflow (CSO), started Sep 13, 2026, 1:03 AM EDT
- Combined sewer overflow (CSO), started Sep 12, 2026, 3:59 PM EDT
- Combined sewer overflow (CSO), started Sep 9, 2026, 9:19 PM EDT
- Combined sewer overflow (CSO), started Sep 3, 2026, 6:30 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 3, 2026, 1:05 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 3, 2026, 1:05 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 3, 2026, 12:40 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 3, 2026, 12:35 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 3, 2026, 12:25 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 3, 2026, 12:25 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 3, 2026, 12:10 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 3, 2026, 12:05 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 3, 2026, 12:00 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 11:45 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 11:40 PM EDT
- Combined sewer overflow (CSO), outfall 003, started Sep 2, 2026, 11:35 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 11:25 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 10:15 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 10:05 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 10:00 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 9:45 PM EDT
- Combined sewer overflow (CSO), outfall 003, started Sep 2, 2026, 9:40 PM EDT
- Combined sewer overflow (CSO), outfall 003, started Sep 2, 2026, 9:25 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 9:20 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 9:10 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 7:20 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 7:20 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 7:05 AM EDT
- Combined sewer overflow (CSO), outfall 003, started Sep 2, 2026, 7:05 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 6:55 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 6:30 AM EDT
- Combined sewer overflow (CSO), outfall 003, started Sep 2, 2026, 6:30 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 6:15 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 6:15 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 6:05 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 6:05 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 5:50 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 5:40 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Sep 2, 2026, 5:30 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Sep 2, 2026, 5:25 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 25, 2026, 9:50 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 25, 2026, 9:25 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 24, 2026, 10:55 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 24, 2026, 9:55 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Aug 23, 2026, 6:15 PM EDT
- Combined sewer overflow (CSO), started Aug 22, 2026, 5:47 PM EDT
- Combined sewer overflow (CSO), started Aug 20, 2026, 7:15 AM EDT
- Combined sewer overflow (CSO), started Aug 16, 2026, 3:48 PM EDT
- Combined sewer overflow (CSO), started Aug 16, 2026, 4:30 AM EDT
- Combined sewer overflow (CSO), started Aug 14, 2026, 1:36 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 13, 2026, 10:20 AM EDT
- Combined sewer overflow (CSO), outfall 008, started Aug 12, 2026, 8:25 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Aug 12, 2026, 8:15 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Aug 12, 2026, 8:05 PM EDT
- Combined sewer overflow (CSO), outfall 008, started Aug 12, 2026, 8:05 PM EDT
- Combined sewer overflow (CSO), outfall 003, started Aug 12, 2026, 8:05 PM EDT
- Combined sewer overflow (CSO), outfall 014, started Aug 12, 2026, 7:55 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 12, 2026, 11:55 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 11, 2026, 11:10 AM EDT
- 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
- Cyanobacteria advisory (harmful blue-green algae), started Aug 10, 2026, 9:00 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), outfall 008, started Aug 7, 2026, 7:45 AM EDT
- Combined sewer overflow (CSO), outfall 014, started Aug 7, 2026, 7:45 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 6, 2026, 9:00 AM EDT
- Combined sewer overflow (CSO), started Aug 5, 2026, 7:10 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 5, 2026, 10:20 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 5, 2026, 8:35 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 4, 2026, 10:20 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Aug 3, 2026, 11:00 AM EDT
- Combined sewer overflow (CSO), started Aug 2, 2026, 6:40 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 30, 2026, 10:15 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 29, 2026, 2:15 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 28, 2026, 10:07 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 23, 2026, 9:55 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 22, 2026, 11:30 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 20, 2026, 1:00 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 20, 2026, 11:35 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 15, 2026, 11:54 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 9, 2026, 11:10 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 7, 2026, 12:25 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 7, 2026, 11:30 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 7, 2026, 10:50 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 7, 2026, 10:00 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 6, 2026, 10:30 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 6, 2026, 7:37 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jul 1, 2026, 12:00 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 24, 2026, 11:10 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 23, 2026, 12:35 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 22, 2026, 12:35 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 15, 2026, 10:15 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 11, 2026, 11:35 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 11, 2026, 11:10 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 4, 2026, 10:02 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started Jun 2, 2026, 8:05 AM EDT
- Cyanobacteria advisory (harmful blue-green algae), started May 18, 2026, 12:00 PM EDT
- Cyanobacteria advisory (harmful blue-green algae), started May 14, 2026, 8:30 AM EDT
Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-02 21:26 UTC.
Reported discharges in Pennsylvania over time
- Discharges affecting Pennsylvania waters, last 12 months190190 affecting Pennsylvania waters: 190 reported by Pennsylvania operators, 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 Pennsylvania waters, last 12 months74Reported by Pennsylvania operators: 74 · Arriving from other states, 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 at least one Pennsylvania water, last 12 months2,484Reported by Pennsylvania operators: 2,484 · Arriving from other states, 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 (Pennsylvania waters)47%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.
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. Outfall: a pipe or outlet where wastewater enters a water body.
Reported discharges per month
280 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.
Sources: pa-alcosan; pa-erie. 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 | 11 | 0 | 0 | 11 | Source records | |
| May 2025 | 17 | 0 | 0 | 17 | Source records | |
| June 2025 | 34 | 0 | 0 | 34 | Source records | |
| July 2025 | 9 | 0 | 0 | 9 | Source records | |
| August 2025 | 5 | 0 | 0 | 5 | Source records | |
| September 2025 | 5 | 0 | 0 | 5 | Source records | |
| October 2025 | 7 | 0 | 0 | 7 | 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 | 16 | 0 | 1 | 17 | Source records | |
| May 2026 | 9 | 0 | 0 | 9 | Source records | |
| June 2026 | 53 | 0 | 0 | 53 | Source records | |
| July 2026 | 32 | 0 | 0 | 32 | Source records | |
| August 2026 | 28 | 0 | 0 | 28 | Source records | |
| September 2026 | 48 | 0 | 0 | 48 | 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 at least one water in the state 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. 10 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.
Sources: pa-alcosan; pa-erie. 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 | 142 | 142 | 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 | 343 | 343 | 720 | |
| May 2026 | 316 | 316 | 744 | |
| June 2026 | 564 | 564 | 720 | |
| July 2026 | 286 | 286 | 744 | |
| August 2026 | 481 | 481 | 744 | |
| September 2026 | 338 | 338 | 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.
Sources: pa-alcosan; pa-erie. 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 | 4 | |
| September 2025 | 4 | |
| October 2025 | 5 | |
| November 2025 | 0 | |
| December 2025 | 0 | |
| January 2026 | 0 | |
| February 2026 | 0 | |
| March 2026 | 1 | |
| April 2026 | 11 | |
| May 2026 | 8 | |
| June 2026 | 21 | |
| July 2026 | 8 | |
| August 2026 | 12 | |
| September 2026 | 11 | |
| 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 (279 did not).
- Incomplete source coverage
279 of 280 discharge reports gave no volume as a number; only numbers are summed.
Sources: pa-alcosan; pa-erie. 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 | 88 | |
| 2026 | 20,000,000 | 1 | 189 |
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
10 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.
Sources: pa-alcosan; pa-erie. 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 | 2,095 | 23.9% | |
| 2026 | 2,484 | 33.9% |
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.
Sources: pa-alcosan; pa-erie. 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 | 28 | 2 |
| May | 26 | 2 |
| June | 87 | 2 |
| July | 41 | 2 |
| August | 33 | 2 |
| September | 53 | 2 |
| October | 11 | 3 |
| November | 0 | 3 |
| December | 0 | 2 |
Reported discharges by wastewater outlet
Wastewater outlets with the most tracked discharge records: 4 of 4, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.
Sources: pa-alcosan; pa-erie. Records cover October 6, 2024 to November 2, 2026.
Show table
| Wastewater outlet | Reported discharges |
|---|---|
| 008 CSO 008 - 5th Germ | 78 |
| 014 CSO 014 - 12th Fren | 48 |
| 003 CSO 003 - Front Stre | 13 |
| 030 CSO 030 - 505 Hi | 7 |
| Outlet not stated | 134 |
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
- pa-erie: records from April 2, 2025 to the latest update
Discharge records dated within the last 30 days
| Start | End | Water | Sewer operator | Outlet | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|---|
| Oct 14, 2026, 9:09 AM EDT | Oct 14, 2026, 9:32 AM EDT | Allegheny River, PA, Monongahela River, PA, Ohio River, PA | 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 River, PA, Monongahela River, PA, Ohio River, PA | 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 |
All reports in Pennsylvania by year
2026 (270 records) · 2025 (125 records) · 2024 (14 records) · 2023 (61 records) · 2022 (24 records) · 2021 (3 records) · 2020 (14 records) · 2019 (7 records) · 2018 (24 records) · 2017 (23 records) · 2016 (44 records) · 2015 (28 records)
By town
Towns along the waters we track and the towns sewer operators serve, A to Z.
- Adams
- Walker Lake
- Anthony Township
- Lake Chillisquauqe
- Aspinwall
- Allegheny River
- Bellevue
- Ohio River
- Bern Township
- Blue Marsh Lake
- Bernville
- Blue Marsh Lake
- Blawnox
- Allegheny River
- Blooming Grove
- White Deer Lake
- Borough of Masontown
- Monongahela River
- Braddock Boro
- Monongahela River
- Briar Creek Township
- Briar Creek Reservoir
- Bridgewater
- Ohio River
- Brokenstraw Township
- Allegheny River
- Brownsville
- Monongahela River
- Bunola
- Monongahela River
- California
- Monongahela River
- Centerville
- Monongahela River
- Centerville Boro
- Monongahela River
- Charleroi
- Monongahela River
- Charleston Township
- Hills Creek Lake
- Cheswick
- Allegheny River
- City of Erie
- Lake Erie
- City of Monongahela
- Monongahela River
- City of Pittsburgh
- Allegheny River, Monongahela River
- City of Warren
- Allegheny River
- Clark
- Shenango River Lake
- Clark Boro
- Shenango River Lake
- Clay Township
- Middle Creek Reservoir
- Clinton
- Prompton Lake
- Coalport
- Glendale Lake
- Colerain Township
- Octoraro Lake (discharge or advisory reported)
- Conewengo Township
- Allegheny River
- Conneaut Township
- Pymatuning Reservoir
- Cosmus
- Allegheny River
- Dean
- Glendale Lake
- Deer Creek Township
- Lake Wilhelm
- Donegal
- Dutch Fork Lake
- Doylestown
- Lake Galena
- Dunkard Township
- Monongahela River
- East Bethlehem Township
- Monongahela River
- East Brady
- Allegheny River
- Eastmead Township
- Tamarack Lake
- Elizabeth Township
- Speedwell Forge Lake
- Emlenton Boro
- Allegheny River
- Erie
- Lake Erie
- Espyville
- Pymatuning Reservoir
- Ewing
- Allegheny River
- Fairview Township
- Lake Erie
- Foxburg
- Allegheny River
- Franklin Towship
- Long Pine Run Reservoir
- Girard Township
- Lake Erie
- Glen Osborne
- Ohio River
- Greene
- Lake Wallenpaupack
- Hammond
- Hammond Lake
- Harborcreek
- Lake Erie
- Harborcreek Township
- Lake Erie
- Harveys Lake
- Harveys Lake
- Harveys Lake Boro
- Harveys Lake
- Hermitage
- Shenango River Lake
- Honey Brook Township
- Struble Lake
- Jugtown
- Giving Pond
- Kilbuck Township
- Ohio River
- Kingston Township
- Frances Slocum Lake
- Lawrence Park
- Lake Erie
- Lawrence Park Township
- Lake Erie
- Ledgedale
- Lake Wallenpaupack
- Leetsdale Boro
- Ohio River
- Lower Heidleburg Township
- Blue Marsh Lake
- M.K. Goddard State Park
- Lake Wilhelm
- Mansfield
- Hills Creek Lake
- Middlebury Township
- Hammond Lake
- Middletown Township
- Lake Luxembourg
- Milford Mills
- Marsh Creek Reservoir
- Monaca
- Ohio River
- New Britian Township
- Lake Galena
- North East
- Lake Erie
- North East Township
- Lake Erie
- North Lebanon
- Lions Lake
- North Shenango
- Pymatuning Reservoir
- Northeast Township
- Lake Erie
- Osborne
- Ohio River
- Overville Township
- Lake Winola
- Palmyra
- Lake Wallenpaupack
- Paupack
- Lake Wallenpaupack
- Penn Township
- Blue Marsh Lake
- Pennsburg
- Green Lane Reservoir
- Pine Grove Township
- Sweet Arrow Lake
- Pittsburgh
- Ohio River
- Pymatuning
- Shenango River Lake
- Richland Township
- Lake Towhee
- Robinson Township
- Ohio River
- Rochester Boro
- Ohio River
- Ross Township
- Sylvan Lake
- Rush Township
- Tuscarora Lake
- Sadsbury
- Conneaut Lake
- Sewickley
- Ohio River
- Sewickley Boro
- Ohio River
- Sheakleyville
- Lake Wilhelm
- Sodsbury
- Conneaut Lake
- Somerset
- Lake Somerset
- South Pymatuning
- Shenango River Lake
- Springfied Township
- Lake Erie
- Summit
- Conneaut Lake
- Tioga
- Hammond Lake
- Tioga Township
- Hammond Lake
- Towanmensing
- Beltzville Lake
- Turnersville
- Pymatuning Reservoir
- Upper Uwchlan Township
- Marsh Creek Reservoir
- Warrington
- Pinchot Lake (discharge or advisory reported)
- West Caln Township
- Chambers Lake
- Westmead Township
- Tamarack Lake
- White Township
- Glendale Lake
- Wilsonville
- Lake Wallenpaupack
- Woodcock Township
- Woodcock Creek Lake
Other states we track: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont.