Non-Compliance
Clean Water Act
WILLIAMSBURG SEWAGE TREATMENT PLANT (STP)
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
-
500 MAPLEWOOD AVE
WILLIAMSBURG, IA 52361
View on map ↗ - County
- IOWA County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 1 · last Oct 27, 2022
- Total Penalties
- $0
- Registry ID
- 110010034667
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.
6
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 | Nov 1, 2021 | — | Open |
| cwa | Schedule Event reported late | Nov 1, 2021 | — | Open |
| cwa | Schedule Event unachieved and not reported | Nov 1, 2020 | Oct 28, 2021 | Resolved |
| cwa | Schedule Event reported late | Nov 1, 2020 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 1, 2020 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 1, 2020 | Oct 28, 2021 | Resolved |
| cwa | Schedule Event reported late | Aug 1, 2019 | — | 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 |
|---|---|---|---|---|---|---|
| E. coli | DMR, Limited - Numeric Violation | 149.14 MPN/100mL | 126.00 | +18% | Apr 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.34 mg/L | 2.30 | +2% | Nov 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 82.00 mg/L | 45.00 | +82% | Dec 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 108.05 kg/d | 99.88 | +8% | Dec 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.28 mg/L | 0.12 | +133% | Jan 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.44 kg/d | 0.13 | +235% | Jan 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 55.00 mg/L | 45.00 | +22% | Dec 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 262.12 kg/d | 99.88 | +162% | Mar 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 108.00 mg/L | 45.00 | +140% | Mar 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.85 mg/L | 0.12 | +607% | Jan 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.08 | +5% | Jan 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.09 kg/d | 0.08 | +14% | Jan 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.93 kg/d | 0.13 | +610% | Jan 2022 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.89 mg/L | 7.50 | +19% | Oct 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.90 mg/L | 7.20 | +79% | Aug 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 17.83 kg/d | 13.17 | +35% | Aug 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.69 mg/L | 7.50 | +16% | Jun 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 28.20 mg/L | 7.50 | +276% | May 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.25 mg/L | 5.00 | +65% | May 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 11.18 kg/d | 9.08 | +23% | May 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 41.43 kg/d | 13.62 | +204% | May 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.43 mg/L | 7.50 | +26% | Jun 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 19.28 kg/d | 13.62 | +42% | Jun 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.50 mg/L | 45.00 | +3% | Apr 2019 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.16 kg/d | 0.13 | +24% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 22.95 kg/d | 13.62 | +69% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.40 mg/L | 7.50 | +92% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 24.38 kg/d | 13.62 | +79% | Sep 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.50 mg/L | 7.50 | +93% | Sep 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.91 mg/L | 4.80 | +44% | Aug 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.14 kg/d | 8.63 | +18% | Aug 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 16.07 kg/d | 13.17 | +22% | Aug 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.50 mg/L | 7.20 | +74% | Aug 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.96 mg/L | 7.20 | +24% | Jul 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.84 mg/L | 4.80 | +22% | Jul 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 15.60 kg/d | 9.08 | +72% | Jun 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 17.00 mg/L | 7.50 | +127% | Jun 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 30.90 kg/d | 13.62 | +127% | Jun 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.28 mg/L | 5.00 | +106% | Jun 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 27.70 mg/L | 7.50 | +269% | Mar 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.73 mg/L | 5.00 | +95% | Mar 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 14.09 kg/d | 9.08 | +55% | Mar 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 38.07 kg/d | 13.62 | +180% | Mar 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 32.40 mg/L | 17.00 | +91% | Feb 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 18.19 mg/L | 11.00 | +65% | Feb 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 21.45 kg/d | 20.43 | +5% | Feb 2018 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 40.21 kg/d | 30.42 | +32% | Feb 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10,798.32 kg/d | 30.42 | +35,400% | Jan 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.00 mg/L | 17.00 | +100% | Jan 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1,098.36 kg/d | 20.43 | +5,276% | Jan 2018 | Resolved |
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.
State CWA Non Penalty AO
Clean Water Act
· Case IA-5063 · Jun 12, 1992
State CWA Non Penalty AO
Clean Water Act
· Case IA-N00001344 · Jun 12, 1992
State CWA Non Penalty AO
Clean Water Act
· Case IA-N5063 · Jun 12, 1992
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