Non-Compliance
Clean Water Act
RCRA
PIERCE ISLAND WASTEWATER TREATMENT PLANT
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
-
200 PIERCE ISLAND RD
PORTSMOUTH, NH 03801
View on map ↗ - County
- ROCKINGHAM County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 22132
- Inspections
- 4 · last May 20, 2025
- Total Penalties
- $0 · last Feb 4, 1991
- Registry ID
- 110004100623
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.
5
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
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 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | Mar 8, 2026 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 31, 2025 | Apr 1, 2026 | Resolved |
| cwa | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | Dec 30, 2025 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jun 27, 2019 | Jun 27, 2019 | Resolved |
| cwa | Schedule Event unachieved but reported | Oct 17, 2008 | Jan 12, 2010 | Resolved |
| cwa | Schedule Event achieved late but reported | Oct 17, 2008 | — | Open |
| cwa | Schedule Event reported late | Oct 17, 2008 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 17, 2008 | Jan 12, 2010 | Resolved |
| cwa | Schedule Event achieved late but reported | Apr 16, 2008 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 3, 2003 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 3, 2003 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 28, 2003 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 28, 2003 | — | Open |
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 - % samples exceeding limit | DMR, Limited - Numeric Violation | 25.00 % | 10.00 | +150% | Feb 2026 | Open |
| Coliform, fecal - % samples exceeding limit | DMR, Limited - Numeric Violation | 16.10 % | 10.00 | +61% | Jan 2026 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 396.80 MPN/100mL | 104.00 | +282% | Oct 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 435.20 MPN/100mL | 104.00 | +318% | Jun 2025 | Open |
| Coliform, fecal - % samples exceeding limit | DMR, Limited - Numeric Violation | 22.60 % | 10.00 | +126% | Mar 2025 | Open |
| Coliform, fecal - % samples exceeding limit | DMR, Limited - Numeric Violation | 10.70 % | 10.00 | +7% | Feb 2025 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 104.00 | +2,227% | Sep 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 613.10 MPN/100mL | 104.00 | +490% | Aug 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 104.00 | +2,227% | Jul 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 960.60 MPN/100mL | 104.00 | +824% | Jun 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 172.50 MPN/100mL | 104.00 | +66% | Apr 2024 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 137.40 MPN/100mL | 104.00 | +32% | Dec 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,067.26 kg/d | 1,044.65 | +2% | Dec 2023 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 81.60 % | 85.00 | +23% | Nov 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 68.80 mg/L | 50.00 | +38% | Jul 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 913.72 kg/d | 908.91 | +1% | Jul 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,741.82 kg/d | 1,726.56 | +1% | Feb 2019 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,914.88 kg/d | 1,726.56 | +11% | Nov 2018 | Resolved |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 55.70 % | 100.00 | +44% | Sep 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 104.30 mg/L | 95.00 | +10% | Dec 2017 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 163.40 mg/L | 150.00 | +9% | Oct 2017 | Resolved |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 33.30 % | 100.00 | +67% | Sep 2017 | Open |
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | DMR, Limited - Numeric Violation | 70.70 % | 100.00 | +29% | Sep 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 108.20 mg/L | 95.00 | +14% | Sep 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 98.60 mg/L | 95.00 | +4% | Aug 2017 | Resolved |
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | DMR, Limited - Numeric Violation | 55.50 % | 100.00 | +45% | Sep 2016 | Open |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 50.00 % | 100.00 | +50% | Sep 2016 | Open |
| LC50 Static 48Hr Acute Menidia | DMR, Limited - Numeric Violation | 68.30 % | 100.00 | +32% | Sep 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
Judicial
· Case 01-2007-2027 · Sep 24, 2009
Administrative - Formal
· Case 01-2008-2501 · Nov 9, 2007
Administrative - Formal
· Case 01-2007-2518 · Aug 1, 2007
CWA 309A AO For Compliance
Clean Water Act
· Case 01-2002-N015 · Jul 11, 2002
Judicial
· Case 01-1989-0003 · Feb 4, 1991
$100,000
Civil Judicial Action
Clean Water Act
· Case 01-1991-N048 · Nov 14, 1990
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