New Hampshire / Waters /
Squamscott River
River in New Hampshire · near Exeter, Newfields, Stratham
Status now
At least one source we follow covers this water, and nothing it reports applies right now.
Why this colour: No current report: nothing a covering source reports colours this water now. How long a water stays coloured, and why
Source: ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall), last answered 2026-11-02 11:54 UTC; ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions), last answered 2026-11-02 11:54 UTC; nh-permittees, last answered 2026-11-02 11:55 UTC. Status computed by DirtyWaterWatch as of 2026-11-02 11:56 UTC.
It is not a finding about the water. Discharges go unreported, reports arrive late, and storm runoff carries bacteria too. Follow posted signs and local health advice.
Rivers are not coloured as a whole: a discharge colours a modeled stretch downstream of its outfall, listed below when there is one.
As of Nov 2, 2026, 6:56 AM EST.
Map
Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.
Outfalls are small brown dots.
Modeled downstream reaches on Squamscott River
No discharge colours a modeled reach on this water now.
Traced outfall paths
- No current report NH0100871 outfall 003 · 0.103 km traced · Model stops here: tidal below this point
Source: paths traced by DirtyWaterWatch on the USGS NLDI / NHDPlus network from each outfall to the head of tide, the first lake or the distance cap; statuses from the events on them.
The last 90 days
- Advisory in effect: Sep 17, 2026, 11:00 PM EDT to Sep 21, 2026, 12:00 AM EDT · set by event 1
Source: hourly statuses computed by DirtyWaterWatch (pipeline build/status.py) from the events linked above and the rules on the methods page; history as of 2026-11-02 11:56 UTC.
Discharges over the years
- Discharge events, last 12 months2Dec 2025 to Nov 2026
- Days with a discharge, last 12 months2Dec 2025 to Nov 2026
- Hours under advisory, last 12 months144Dec 2025 to Nov 2026
- 2026 season under advisory3.3%May to October; 144 h
Discharge events per month
13 events, Jan 2022 to Nov 2026.
- Combined sewer overflow
- Sanitary sewer overflow
- Bypass, blended or other
NH permittees publish on their own pages; each discharger's record begins on a different date.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2022-01-01 to 2026-11-02.
Show table
| Month | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| Jan 2022 | 0 | 0 | 0 | 0 | ||
| Feb 2022 | 0 | 0 | 0 | 0 | ||
| Mar 2022 | 0 | 0 | 0 | 0 | ||
| Apr 2022 | 0 | 0 | 0 | 0 | ||
| May 2022 | 0 | 0 | 0 | 0 | ||
| Jun 2022 | 0 | 0 | 0 | 0 | ||
| Jul 2022 | 0 | 0 | 1 | 1 | Source records | |
| Aug 2022 | 0 | 0 | 0 | 0 | ||
| Sep 2022 | 0 | 0 | 0 | 0 | ||
| Oct 2022 | 0 | 0 | 0 | 0 | ||
| Nov 2022 | 0 | 0 | 0 | 0 | ||
| Dec 2022 | 0 | 0 | 1 | 1 | Source records | |
| Jan 2023 | 0 | 0 | 1 | 1 | Source records | |
| Feb 2023 | 0 | 0 | 0 | 0 | ||
| Mar 2023 | 0 | 0 | 1 | 1 | Source records | |
| Apr 2023 | 0 | 0 | 0 | 0 | ||
| May 2023 | 0 | 0 | 1 | 1 | Source records | |
| Jun 2023 | 0 | 0 | 0 | 0 | ||
| Jul 2023 | 0 | 0 | 0 | 0 | ||
| Aug 2023 | 0 | 0 | 0 | 0 | ||
| Sep 2023 | 0 | 0 | 0 | 0 | ||
| Oct 2023 | 0 | 0 | 0 | 0 | ||
| Nov 2023 | 0 | 0 | 0 | 0 | ||
| Dec 2023 | 1 | 0 | 1 | 2 | Source records | |
| Jan 2024 | 0 | 0 | 0 | 0 | ||
| Feb 2024 | 0 | 0 | 0 | 0 | ||
| Mar 2024 | 0 | 0 | 0 | 0 | ||
| Apr 2024 | 0 | 0 | 0 | 0 | ||
| May 2024 | 0 | 0 | 0 | 0 | ||
| Jun 2024 | 0 | 0 | 0 | 0 | ||
| Jul 2024 | 0 | 0 | 0 | 0 | ||
| Aug 2024 | 0 | 0 | 0 | 0 | ||
| Sep 2024 | 0 | 0 | 0 | 0 | ||
| Oct 2024 | 0 | 0 | 0 | 0 | ||
| Nov 2024 | 0 | 0 | 0 | 0 | ||
| Dec 2024 | 0 | 0 | 0 | 0 | ||
| Jan 2025 | 0 | 0 | 0 | 0 | ||
| Feb 2025 | 0 | 0 | 0 | 0 | ||
| Mar 2025 | 0 | 0 | 1 | 1 | Source records | |
| Apr 2025 | 0 | 0 | 0 | 0 | ||
| May 2025 | 0 | 0 | 0 | 0 | ||
| Jun 2025 | 0 | 0 | 0 | 0 | ||
| Jul 2025 | 0 | 0 | 0 | 0 | ||
| Aug 2025 | 0 | 0 | 0 | 0 | ||
| Sep 2025 | 0 | 0 | 0 | 0 | ||
| Oct 2025 | 0 | 0 | 3 | 3 | Source records | |
| Nov 2025 | 0 | 0 | 0 | 0 | ||
| Dec 2025 | 0 | 0 | 0 | 0 | ||
| Jan 2026 | 0 | 0 | 0 | 0 | ||
| Feb 2026 | 0 | 0 | 0 | 0 | ||
| Mar 2026 | 0 | 0 | 0 | 0 | ||
| Apr 2026 | 0 | 0 | 0 | 0 | ||
| May 2026 | 0 | 0 | 0 | 0 | ||
| Jun 2026 | 0 | 0 | 1 | 1 | Source records | |
| Jul 2026 | 0 | 0 | 0 | 0 | ||
| Aug 2026 | 0 | 0 | 0 | 0 | ||
| Sep 2026 | 0 | 0 | 1 | 1 | Source records | |
| Oct 2026 | 0 | 0 | 0 | 0 | ||
| Nov 2026 | 0 | 0 | 0 | 0 |
Hours under advisory per month
Hours this water was under an advisory, by the map's red rules.
- Advisory in effect
22 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here. NH permittees publish on their own pages; each discharger's record begins on a different date.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Month | Hours under advisory | From discharge windows | Hours in month | Coverage |
|---|---|---|---|---|
| Jan 2022 | 0 | 0 | 744 | |
| Feb 2022 | 0 | 0 | 672 | |
| Mar 2022 | 0 | 0 | 744 | |
| Apr 2022 | 0 | 0 | 720 | |
| May 2022 | 0 | 0 | 744 | |
| Jun 2022 | 0 | 0 | 720 | |
| Jul 2022 | 0 | 0 | 744 | |
| Aug 2022 | 0 | 0 | 744 | |
| Sep 2022 | 0 | 0 | 720 | |
| Oct 2022 | 0 | 0 | 744 | |
| Nov 2022 | 0 | 0 | 720 | |
| Dec 2022 | 0 | 0 | 744 | |
| Jan 2023 | 0 | 0 | 744 | |
| Feb 2023 | 0 | 0 | 672 | |
| Mar 2023 | 0 | 0 | 744 | |
| Apr 2023 | 0 | 0 | 720 | |
| May 2023 | 0 | 0 | 744 | |
| Jun 2023 | 0 | 0 | 720 | |
| Jul 2023 | 0 | 0 | 744 | |
| Aug 2023 | 0 | 0 | 744 | |
| Sep 2023 | 0 | 0 | 720 | |
| Oct 2023 | 0 | 0 | 744 | |
| Nov 2023 | 0 | 0 | 720 | |
| Dec 2023 | 72 | 72 | 744 | |
| Jan 2024 | 0 | 0 | 744 | |
| Feb 2024 | 0 | 0 | 696 | |
| Mar 2024 | 0 | 0 | 744 | |
| Apr 2024 | 0 | 0 | 720 | |
| May 2024 | 0 | 0 | 744 | |
| Jun 2024 | 0 | 0 | 720 | |
| Jul 2024 | 0 | 0 | 744 | |
| Aug 2024 | 0 | 0 | 744 | |
| Sep 2024 | 0 | 0 | 720 | |
| Oct 2024 | 0 | 0 | 744 | |
| Nov 2024 | 0 | 0 | 720 | |
| Dec 2024 | 0 | 0 | 744 | |
| Jan 2025 | 0 | 0 | 744 | |
| Feb 2025 | 0 | 0 | 672 | |
| Mar 2025 | 0 | 0 | 744 | |
| Apr 2025 | 0 | 0 | 720 | |
| May 2025 | 0 | 0 | 744 | |
| Jun 2025 | 0 | 0 | 720 | |
| Jul 2025 | 0 | 0 | 744 | |
| Aug 2025 | 0 | 0 | 744 | |
| Sep 2025 | 0 | 0 | 720 | |
| Oct 2025 | 166 | 166 | 744 | |
| Nov 2025 | 51 | 51 | 720 | |
| Dec 2025 | 0 | 0 | 744 | |
| Jan 2026 | 0 | 0 | 744 | |
| Feb 2026 | 0 | 0 | 672 | |
| Mar 2026 | 0 | 0 | 744 | |
| Apr 2026 | 0 | 0 | 720 | |
| May 2026 | 0 | 0 | 744 | |
| Jun 2026 | 72 | 72 | 720 | |
| Jul 2026 | 0 | 0 | 744 | |
| Aug 2026 | 0 | 0 | 744 | |
| Sep 2026 | 72 | 72 | 720 | |
| Oct 2026 | 0 | 0 | 744 | |
| Nov 2026 | 0 | 0 | 32 |
Days with a discharge per month
A day counts when any counted discharge was under way on it (start to reported end, local time); an event with no end counts its start day.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2022-01-01 to 2026-11-02.
Show table
| Month | Days with a discharge | Coverage |
|---|---|---|
| Jan 2022 | 0 | |
| Feb 2022 | 0 | |
| Mar 2022 | 0 | |
| Apr 2022 | 0 | |
| May 2022 | 0 | |
| Jun 2022 | 0 | |
| Jul 2022 | 1 | |
| Aug 2022 | 0 | |
| Sep 2022 | 0 | |
| Oct 2022 | 0 | |
| Nov 2022 | 0 | |
| Dec 2022 | 1 | |
| Jan 2023 | 1 | |
| Feb 2023 | 0 | |
| Mar 2023 | 1 | |
| Apr 2023 | 0 | |
| May 2023 | 1 | |
| Jun 2023 | 0 | |
| Jul 2023 | 0 | |
| Aug 2023 | 0 | |
| Sep 2023 | 0 | |
| Oct 2023 | 0 | |
| Nov 2023 | 0 | |
| Dec 2023 | 1 | |
| Jan 2024 | 0 | |
| Feb 2024 | 0 | |
| Mar 2024 | 0 | |
| Apr 2024 | 0 | |
| May 2024 | 0 | |
| Jun 2024 | 0 | |
| Jul 2024 | 0 | |
| Aug 2024 | 0 | |
| Sep 2024 | 0 | |
| Oct 2024 | 0 | |
| Nov 2024 | 0 | |
| Dec 2024 | 0 | |
| Jan 2025 | 0 | |
| Feb 2025 | 0 | |
| Mar 2025 | 1 | |
| Apr 2025 | 0 | |
| May 2025 | 0 | |
| Jun 2025 | 0 | |
| Jul 2025 | 0 | |
| Aug 2025 | 0 | |
| Sep 2025 | 0 | |
| Oct 2025 | 3 | |
| Nov 2025 | 0 | |
| Dec 2025 | 0 | |
| Jan 2026 | 0 | |
| Feb 2026 | 0 | |
| Mar 2026 | 0 | |
| Apr 2026 | 0 | |
| May 2026 | 0 | |
| Jun 2026 | 1 | |
| Jul 2026 | 0 | |
| Aug 2026 | 0 | |
| Sep 2026 | 1 | |
| Oct 2026 | 0 | |
| Nov 2026 | 0 |
Discharge events per year, 2016 to 2026
30 events, 2016 to 2026.
- Combined sewer overflow
- Sanitary sewer overflow
- Bypass, blended or other
- Partly covered or sparse source
NH permittees publish on their own pages; each discharger's record begins on a different date.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Year | Combined sewer overflow | Sanitary sewer overflow | Bypass, blended or other | Total | Coverage |
|---|---|---|---|---|---|
| 2016 | 1 | 0 | 0 | 1 | Partly covered or sparse source |
| 2017 | 1 | 0 | 0 | 1 | |
| 2018 | 7 | 0 | 0 | 7 | |
| 2019 | 4 | 0 | 2 | 6 | |
| 2020 | 0 | 0 | 1 | 1 | |
| 2021 | 0 | 0 | 1 | 1 | |
| 2022 | 0 | 0 | 2 | 2 | |
| 2023 | 1 | 0 | 4 | 5 | |
| 2024 | 0 | 0 | 0 | 0 | |
| 2025 | 0 | 0 | 4 | 4 | |
| 2026 | 0 | 0 | 2 | 2 |
Reported volume per year
Gallons, summed from the 30 events that gave a number.
- Partly covered or sparse source
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Year | Gallons | Events with a number | Events without | Coverage |
|---|---|---|---|---|
| 2016 | 18,191 | 1 | 0 | Partly covered or sparse source |
| 2017 | 398,160 | 1 | 0 | |
| 2018 | 2,597,360 | 7 | 0 | |
| 2019 | 695,602 | 6 | 0 | |
| 2020 | 800,000 | 1 | 0 | |
| 2021 | 10,000 | 1 | 0 | |
| 2022 | 23,611 | 2 | 0 | |
| 2023 | 32,438 | 5 | 0 | |
| 2024 | 0 | 0 | 0 | |
| 2025 | 49,029 | 4 | 0 | |
| 2026 | 828 | 2 | 0 |
Hours under advisory per year
Hours under advisory each year; 2026 to date.
- Advisory in effect
- Partly covered or sparse source
22 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Year | Hours under advisory | Share of the year | Coverage |
|---|---|---|---|
| 2016 | 0 | 0.0% | Partly covered or sparse source |
| 2017 | 120 | 1.4% | |
| 2018 | 0 | 0.0% | |
| 2019 | 0 | 0.0% | |
| 2020 | 120 | 1.4% | |
| 2021 | 0 | 0.0% | |
| 2022 | 0 | 0.0% | |
| 2023 | 72 | 0.8% | |
| 2024 | 0 | 0.0% | |
| 2025 | 216 | 2.5% | |
| 2026 | 144 | 2.0% |
Discharge events by calendar month, all years
Every counted discharge event, by the calendar month it began.
Months are summed over every year a source covers; the table gives the number of years behind each month.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Month | Events | Years of records |
|---|---|---|
| Jan | 2 | 11 |
| Feb | 1 | 11 |
| Mar | 3 | 11 |
| Apr | 5 | 11 |
| May | 3 | 11 |
| Jun | 1 | 11 |
| Jul | 1 | 11 |
| Aug | 1 | 11 |
| Sep | 3 | 11 |
| Oct | 4 | 11 |
| Nov | 3 | 11 |
| Dec | 3 | 10 |
Discharge events by outfall
The 3 outfalls with the most events of 3, all years.
NH permittees publish on their own pages; each discharger's record begins on a different date.
Source: NH permittee notices (Nashua, Manchester, Portsmouth, Exeter). Covered 2016-01-10 to 2026-11-02.
Show table
| Outfall | Discharger | Events |
|---|---|---|
| 001 WWTP outfall 001 | Town of Exeter WWTP | 14 |
| 003 Clemson Pond tide gate (CSO structures: Spring St, Water St) | Town of Exeter DPW | 14 |
| Wastewater Treatment Plant | Town of Exeter WWTP | 1 |
| Outfall not stated | 1 |
How these charts are counted
Discharge events are counted once: where a source publishes both public notices and verified reports (MassDEP, Vermont DEC), a discharger's month with any verified report counts its verified reports only, and other months count notices. Revisions are folded into the record they revise, and EPA copies of a state report are not counted twice. Monthly and yearly totals (Maine DEP, EPA discharge monitoring reports, Portsmouth) are shown on their own and never added to the event counts. Hours under advisory follow the map's red rules. A muted band marks periods no source covers: a gap there is missing data, not a quiet month.
- EPA ECHO sewer overflow events: 2022-05-03 to now (sparse)
- NH permittee notices (Nashua, Manchester, Portsmouth, Exeter): 2016-01-10 to 2025-09-30
- NH permittee notices (Nashua, Manchester, Portsmouth, Exeter): 2019-04-25 to now
Every event on Squamscott River
| Start | End | Discharger | Outfall | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026, 11:46 PM EDT | Sep 17, 2026, 11:48 PM EDT | Town of Exeter WWTP | Wastewater Treatment Plant | Treatment plant bypass | 488 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2026-09-17:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | Event: Treatment plant bypass, Town of Exeter WWTP, Sep 17, 2026, 11:46 PM EDT · Map |
| Jun 25, 2026, 1:38 AM EDT | Jun 25, 2026, 1:43 AM EDT | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 340 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2026-06-25:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | Event: Treatment plant bypass, Town of Exeter WWTP, Jun 25, 2026, 1:38 AM EDT · Map |
| Oct 31, 2025, 2:38 AM EDT | Oct 31, 2025, 2:41 AM EDT | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 2,292 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2025-10-31:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 8, 2025, 11:27 AM EDT | Oct 8, 2025, 11:30 AM EDT | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 3,750 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2025-10-08:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 5, 2025, 7:17 AM EDT | Oct 5, 2025, 7:20 AM EDT | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 2,709 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2025-10-05:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 7, 2025, 11:38 AM EST | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 40,278 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2025-03-07:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 12, 2023, 10:50 PM EST | Dec 12, 2023, 11:05 PM EST | Town of Exeter DPW (Exeter WWTP, 13 Newfields Rd, and CSO 003) | 003 Tidal Gate of Clemson Pond | Combined sewer overflowrevised | 14 gal | EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators) via ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions), record NH0100871:2:1, reported Dec 13, 2023, 7:00 PM EST, retrieved 2026-11-02 11:54 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 12, 2023, 10:50 PM EST | Dec 12, 2023, 11:05 PM EST | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St, Water St) | Combined sewer overflow | 14,072 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2023-12-12:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 12, 2023, 10:16 PM EST | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 9,646 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2023-12-12:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 30, 2023 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 4,720 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2023-05-30:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 18, 2023 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 2,000 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2023-03-18:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 23, 2023 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 2,000 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2023-01-23:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Dec 23, 2022 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 18,611 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2022-12-23:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jul 21, 2022 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 5,000 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2022-07-21:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 28, 2021 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 10,000 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2021-05-28:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 20, 2020 | Apr 21, 2020 | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 800,000 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2020-04-20:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 19, 2019 | ended, time not reported | Town of Exeter WWTP | 001 WWTP outfall 001 | Treatment plant bypass | 18,750 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2019-09-19:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| May 22, 2019 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate | Combined sewer overflow | 164,850 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2019-05-22:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 25, 2019 | ended, time not reported | Town of Exeter WWTP | not stated | Treatment plant bypass | 40,270 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:bypass:2019-04-25:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Mar 10, 2019 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate | Combined sewer overflow | 420,170 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2019-03-10:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Feb 21, 2019 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate | Combined sewer overflow | 20,120 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2019-02-21:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Jan 24, 2019 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St) | Combined sewer overflow | 31,442 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2019-01-24:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 28, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St) | Combined sewer overflow | 25,660 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-11-28:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 27, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St, Water St) | Combined sewer overflow | 1.64 million gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-11-27:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Nov 3, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St, Water St) | Combined sewer overflow | 10,920 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-11-03:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Sep 18, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St, Water St) | Combined sewer overflow | 518,790 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-09-18:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Aug 3, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St) | Combined sewer overflow | 12,760 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-08-03:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 16, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Spring St) | Combined sewer overflow | 260,790 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-04-16:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 16, 2018 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate (CSO structures: Water St) | Combined sewer overflow | 132,990 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2018-04-16:2, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Apr 6, 2017 | Apr 7, 2017 | Town of Exeter DPW | 003 Clemson Pond tide gate | Combined sewer overflow | 398,160 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2017-04-06:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
| Oct 21, 2016 | ended, time not reported | Town of Exeter DPW | 003 Clemson Pond tide gate | Combined sewer overflow | 18,191 gal | Town of Exeter DPW (Combined Sewer & Sanitary Sewer Overflows page) via nh-permittees, record exeter:cso:2016-10-21:1, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice | record below · Map |
Full record (older than 180 days, so no page of its own) | |||||||
Outfalls on this water
No outfall in the registry is matched to this water.
Dischargers: Town of Exeter DPW (Exeter WWTP, 13 Newfields Rd, and CSO 003).
Launches
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, ODbL). · Squamscott River on OpenBoatLaunch
Sources covering this water
- ECHO Effluent Charts REST services (per-permit DMR data incl. monthly CSO event counts, duration, volume per outfall) · updating · last answered Nov 2, 2026, 6:54 AM EST
- ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions) · updating · last answered Nov 2, 2026, 6:54 AM EST
- nh-permittees · updating · last answered Nov 2, 2026, 6:55 AM EST
31 events placed on this water in this build.