Non-Compliance
Clean Water Act
COHASSET WASTEWATER TREATMENT FACILITY
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
43 ELM ST
COHASSET, MA 02025
View on map ↗ - County
- NORFOLK County
- Total Penalties
- $0
- Registry ID
- 110006744577
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
9
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Schedule Event achieved late but reported | Mar 31, 2010 | — | Open |
| cwa | Schedule Event reported late | Mar 31, 2009 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 31, 2009 | May 1, 2009 | Resolved |
| cwa | Schedule Event unachieved but reported | Mar 31, 2009 | Jan 1, 2013 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 31, 2009 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 31, 2008 | Dec 31, 2010 | Resolved |
| cwa | Schedule Event reported late | Mar 31, 2008 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 31, 2008 | — | Open |
| cwa | Schedule Event unachieved but reported | Mar 31, 2008 | Jan 1, 2013 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 28, 2004 | Jan 1, 2005 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 19, 2004 | Jan 1, 2005 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 28, 2003 | Jan 1, 2005 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 19, 2003 | Jan 1, 2005 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 28, 2002 | Jan 1, 2005 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 19, 2002 | Mar 21, 2002 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 28, 2001 | Jan 1, 2005 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Coliform, fecal general | DMR, Limited - Numeric Violation | 922.00 MPN/100mL | 28.00 | +3,193% | Feb 2026 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 259.00 MPN/100mL | 14.00 | +1,750% | Feb 2026 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 92.00 MPN/100mL | 28.00 | +229% | Jan 2026 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 64.00 MPN/100mL | 14.00 | +357% | Jan 2026 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 53.00 MPN/100mL | 14.00 | +279% | Dec 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 125.00 MPN/100mL | 28.00 | +346% | Dec 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 353.00 MPN/100mL | 28.00 | +1,161% | Nov 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 100.00 MPN/100mL | 14.00 | +614% | Nov 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 282.00 MPN/100mL | 28.00 | +907% | Oct 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 128.00 MPN/100mL | 14.00 | +814% | Oct 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 23.00 MPN/100mL | 14.00 | +64% | Sep 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 77.00 MPN/100mL | 28.00 | +175% | Sep 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 62.00 MPN/100mL | 28.00 | +121% | Aug 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 20.00 MPN/100mL | 14.00 | +43% | Aug 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 66.00 MPN/100mL | 14.00 | +371% | Jul 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 40.00 MPN/100mL | 35.00 | +14% | Jul 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 201.00 MPN/100mL | 104.00 | +93% | Jul 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 329.00 MPN/100mL | 28.00 | +1,075% | Jul 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 43.00 MPN/100mL | 28.00 | +54% | Apr 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 53.00 MPN/100mL | 14.00 | +279% | Jan 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 150.00 MPN/100mL | 28.00 | +436% | Jan 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 52.00 MPN/100mL | 28.00 | +86% | Nov 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 18.00 MPN/100mL | 14.00 | +29% | Nov 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 36.00 MPN/100mL | 28.00 | +29% | Aug 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 141.00 MPN/100mL | 14.00 | +907% | Aug 2023 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 846.00 MPN/100mL | 28.00 | +2,921% | Aug 2023 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 67.00 % | 85.00 | +120% | Jun 2023 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 13.00 mg/L | 10.00 | +30% | May 2021 | Open |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 76.00 % | 100.00 | +24% | Apr 2021 | Open |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 71.00 % | 100.00 | +29% | Jan 2021 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 32.30 mg/L | 10.00 | +223% | Jul 2020 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 42.00 mg/L | 10.00 | +320% | Jun 2020 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 34.00 mg/L | 10.00 | +240% | May 2020 | Resolved |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 65.00 MPN/100mL | 28.00 | +132% | Nov 2019 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.80 mg/L | 10.00 | +18% | Sep 2019 | Resolved |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 324.00 MPN/100mL | 28.00 | +1,057% | Jul 2019 | Open |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 31.00 MPN/100mL | 14.00 | +121% | Jul 2019 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 17.00 mg/L | 10.00 | +70% | Jul 2019 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 21.00 mg/L | 10.00 | +110% | Jun 2019 | Resolved |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 122.00 MPN/100mL | 28.00 | +336% | Jun 2019 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 14.00 mg/L | 10.00 | +40% | May 2019 | Resolved |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 20.00 MPN/100mL | 14.00 | +43% | Nov 2018 | Open |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 262.00 MPN/100mL | 28.00 | +836% | Nov 2018 | Open |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 14.00 MPN/100mL | 14.00 | +99,999% | Mar 2018 | Open |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 28.00 MPN/100mL | 28.00 | +99,999% | Mar 2018 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 59.47 kg/d | 51.30 | +16% | Dec 2017 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 79.00 % | 85.00 | +40% | Dec 2017 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 59.00 mg/L | 30.00 | +97% | Dec 2017 | Open |
| Coliform, fecal, colony forming units | DMR, Limited - Numeric Violation | 32.00 MPN/100mL | 28.00 | +14% | Aug 2016 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 10.10 mg/L | 10.00 | +1% | May 2015 | Open |
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