Non-Compliance
Clean Water Act
W SWANZEY WWTF
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
-
DENMAN THOMPSON HIGHWAY
SWANZEY, NH 03446
View on map ↗ - County
- CHESHIRE County
- Inspections
- 1 · last Sep 8, 2025
- Total Penalties
- $0
- Registry ID
- 110039692482
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.
10
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 | Reporting Violations - Improper/ Incorrect Reporting | Sep 8, 2025 | — | Open |
| cwa | Reporting Violations - Failure to Notify | Sep 8, 2025 | — | 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 |
|---|---|---|---|---|---|---|
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.00 | +900% | Feb 2026 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.00 | +1,150% | Feb 2026 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,400.00 MPN/100mL | 406.00 | +491% | Jan 2026 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +352% | Jan 2026 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +442% | Jan 2026 | Open |
| E. coli | DMR, Limited - Numeric Violation | 251.00 MPN/100mL | 126.00 | +99% | Jan 2026 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +129% | Dec 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +184% | Dec 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +481% | Nov 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +329% | Nov 2025 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 520.00 MPN/100mL | 406.00 | +28% | Nov 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 4.30 mg/L | 1.00 | +330% | Oct 2025 | Resolved |
| LC50 Static 48Hr Acute Pimephales promelas | DMR, Limited - Numeric Violation | 50.90 % | 100.00 | +49% | Sep 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 5.40 mg/L | 1.00 | +440% | Sep 2025 | Resolved |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 64.40 % | 100.00 | +36% | Sep 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 5.90 mg/L | 1.00 | +490% | Aug 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Overdue | 5.90 mg/L | 1.00 | +490% | Aug 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Overdue | 4.90 mg/L | 1.00 | +390% | Jul 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 4.90 mg/L | 1.00 | +390% | Jul 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +3% | Jun 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Overdue | 0.00 mg/L | 0.00 | +3% | Jun 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Overdue | 3.20 mg/L | 1.00 | +220% | Jun 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 3.20 mg/L | 1.00 | +220% | Jun 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +100% | May 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 6.80 mg/L | 1.00 | +580% | May 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +55% | May 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +208% | Apr 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +223% | Apr 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 3.40 mg/L | 1.00 | +240% | Apr 2025 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 35.80 mg/L | 25.00 | +43% | Feb 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 31.20 mg/L | 25.00 | +25% | Jan 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 44.00 mg/L | 40.00 | +10% | Jan 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 406.00 | +496% | Jan 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 411.00 MPN/100mL | 406.00 | +1% | Nov 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.02 mg/L | 1.00 | +2% | Nov 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 2.60 mg/L | 1.00 | +160% | Oct 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.05 mg/L | 1.00 | +5% | Oct 2024 | Open |
| LC50 Static 48Hr Acute Pimephales promelas | DMR, Limited - Numeric Violation | 70.70 % | 100.00 | +29% | Sep 2024 | Open |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | DMR, Limited - Numeric Violation | 35.40 % | 100.00 | +65% | Sep 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.35 mg/L | 1.00 | +35% | Sep 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 2.20 mg/L | 1.00 | +120% | Jul 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 32.00 mg/L | 30.00 | +7% | Jul 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.32 mg/L | 1.00 | +32% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 50.00 | +28% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 29.06 kg/d | 27.29 | +6% | Jul 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 64.00 mg/L | 45.00 | +42% | Jul 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 3.80 mg/L | 1.00 | +280% | Jun 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 3.20 mg/L | 1.00 | +220% | May 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.25 mg/L | 1.00 | +25% | Apr 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 25.30 mg/L | 25.00 | +1% | Mar 2024 | Open |
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