Non-Compliance
Clean Water Act
ONTARIO 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
-
SOUTH STREET
ONTARIO, WI 54651
View on map ↗ - County
- VERNON County
- Total Penalties
- $0
- Registry ID
- 110010889609
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
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 | WW SSO - Discharge to Waters | Jul 20, 2017 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 31, 1983 | Dec 29, 1984 | 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 |
|---|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 39.40 mg/L | 34.00 | +16% | Dec 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 35.06 mg/L | 34.00 | +3% | Dec 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 40.80 mg/L | 34.00 | +20% | Dec 2025 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 49.00 mg/L | 45.00 | +9% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 38.90 mg/L | 34.00 | +14% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 37.41 mg/L | 34.00 | +10% | Nov 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.63 mg/L | 8.00 | +8% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 46.80 mg/L | 34.00 | +38% | Nov 2025 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 32.17 mg/L | 30.00 | +7% | Nov 2025 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 49.33 mg/L | 45.00 | +10% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 35.20 mg/L | 34.00 | +4% | Apr 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.00 mg/L | 34.00 | +6% | Apr 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.00 mg/L | 34.00 | +32% | Mar 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.00 mg/L | 34.00 | +32% | Mar 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.00 mg/L | 34.00 | +32% | Mar 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.20 mg/L | 34.00 | +33% | Feb 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.20 mg/L | 34.00 | +33% | Feb 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 45.20 mg/L | 34.00 | +33% | Feb 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 43.20 mg/L | 34.00 | +27% | Jan 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 43.20 mg/L | 34.00 | +27% | Jan 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 43.20 mg/L | 34.00 | +27% | Jan 2025 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.08 mg/L | 8.00 | +1% | Dec 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 9.46 mg/L | 8.00 | +18% | Oct 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.13 mg/L | 8.00 | +2% | Sep 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.50 mg/L | 34.00 | +1% | Mar 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.50 mg/L | 34.00 | +1% | Mar 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 34.50 mg/L | 34.00 | +1% | Mar 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.10 mg/L | 34.00 | +6% | Jan 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.10 mg/L | 34.00 | +6% | Jan 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.10 mg/L | 34.00 | +6% | Jan 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.50 mg/L | 34.00 | +7% | Dec 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.50 mg/L | 34.00 | +7% | Dec 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 36.50 mg/L | 34.00 | +7% | Dec 2023 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.91 mg/L | 8.00 | +11% | Nov 2023 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.72 mg/L | 8.00 | +9% | Oct 2023 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.83 mg/L | 8.00 | +10% | Sep 2023 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 8.10 mg/L | 8.00 | +1% | Aug 2023 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 53.67 mg/L | 45.00 | +19% | Jul 2022 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 32.79 mg/L | 30.00 | +9% | Jun 2022 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 31.92 mg/L | 30.00 | +6% | May 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 73.00 mg/L | 45.00 | +62% | May 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 46.00 mg/L | 45.00 | +2% | Mar 2019 | Open |
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