Non-Compliance
Clean Water Act
ORONOCO WWTP
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
-
115 2ND ST NW
ORONOCO, MN 55960
View on map ↗ - County
- OLMSTED County
- Inspections
- 1 · last Jan 15, 2025
- Total Penalties
- $0
- Registry ID
- 110068321186
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.
7
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
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, total [as N] | DMR, Limited - Numeric Violation | 27.70 mg/L | 10.00 | +177% | Feb 2026 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 29.70 mg/L | 10.00 | +197% | Jan 2026 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 15.30 mg/L | 10.00 | +53% | Dec 2025 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Nov 2025 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 10.70 mg/L | 10.00 | +7% | Apr 2025 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.00 mg/L | 0.40 | +150% | Mar 2025 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 24.10 mg/L | 10.00 | +141% | Feb 2025 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 32.60 mg/L | 10.00 | +226% | Jan 2025 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 25.70 mg/L | 10.00 | +157% | Dec 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.20 mg/L | 0.40 | +200% | Nov 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.90 mg/L | 0.40 | +375% | Oct 2024 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 12.80 mg/L | 10.00 | +28% | Oct 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 1.60 mg/L | 0.40 | +300% | Sep 2024 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 18.80 mg/L | 10.00 | +88% | Sep 2024 | Resolved |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.70 mg/L | 0.40 | +75% | Aug 2024 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.40 mg/L | 10.00 | +14% | Jul 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 61.00 mg/L | 45.00 | +36% | Jun 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 55.00 mg/L | 40.00 | +38% | Jun 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 33.00 mg/L | 30.00 | +10% | May 2024 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 80.00 % | 85.00 | +33% | May 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 62.00 mg/L | 45.00 | +38% | May 2024 | Open |
| Coliform, fecal MPN + membrane ftl 44.5 C | DMR, Limited - Numeric Violation | 237.00 MPN/100mL | 200.00 | +19% | May 2024 | 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.
State CWA Non Penalty AO
Clean Water Act
· Case MN-00N085621NON20251 · Feb 7, 2025
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