Non-Compliance
Clean Water Act
OSKALOOSA NE WWTP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $3,000 in total penalties since records began.
- Address
-
2295 235TH ST.
OSKALOOSA, IA 52577
View on map ↗ - County
- MAHASKA County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 2 · last Mar 14, 2024
- Total Penalties
- $3,000 · last Sep 16, 2025
- Registry ID
- 110039989439
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 | Schedule Event unachieved but reported | Apr 1, 2024 | May 24, 2024 | Resolved |
| cwa | Schedule Event unachieved and not reported | Apr 1, 2024 | May 24, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Apr 1, 2024 | — | Open |
| cwa | Schedule Event reported late | Apr 1, 2024 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 1, 2023 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 1, 2022 | — | Open |
| cwa | Schedule Event achieved late but reported | Aug 1, 2018 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 1, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 1, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 1, 2003 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 1, 2003 | Jul 28, 2004 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 1, 2003 | Jul 28, 2004 | Resolved |
| cwa | Schedule Event reported late | Nov 1, 2003 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 1, 2003 | — | Open |
| cwa | Schedule Event unachieved and not reported | Feb 1, 2003 | May 21, 2004 | Resolved |
| cwa | Schedule Event unachieved but reported | Feb 1, 2003 | May 21, 2004 | Resolved |
| cwa | Schedule Event reported late | Feb 1, 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 |
|---|---|---|---|---|---|---|
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +41% | Jan 2026 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.03 | +4% | Dec 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.93 mg/L | 5.00 | +21% | Dec 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.00 mg/L | 2.50 | +60% | Dec 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +50% | Nov 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.71 mg/L | 2.30 | +18% | Nov 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.06 mg/L | 0.03 | +119% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.98 mg/L | 1.60 | +211% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 19.20 mg/L | 11.10 | +73% | Oct 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 2.35 mg/L | 5.00 | +53% | Oct 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +1% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.52 mg/L | 1.10 | +220% | Sep 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 13.70 mg/L | 6.10 | +125% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.77 kg/d | 9.99 | +8% | Sep 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 171.00 mg/L | 45.00 | +280% | Aug 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.25 mg/L | 30.00 | +54% | Aug 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 628.69 kg/d | 282.84 | +122% | Aug 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.51 mg/L | 5.00 | +30% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.14 mg/L | 1.30 | +64% | Jun 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +33% | Jun 2025 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +41% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.05 mg/L | 4.00 | +51% | Feb 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 4.65 mg/L | 5.00 | +7% | Feb 2025 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +32% | Jan 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 55.67 mg/L | 45.00 | +24% | Jan 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.77 mg/L | 1.60 | +11% | Oct 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.55 mg/L | 1.10 | +41% | Sep 2024 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +6% | Mar 2024 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +5% | Dec 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.29 mg/L | 1.10 | +17% | Sep 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.03 | +6% | May 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.03 | +10% | Apr 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.03 | +7% | Jan 2023 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +16% | Oct 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +52% | Feb 2022 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +51% | Feb 2022 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +42% | Jan 2022 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.02 | +168% | Dec 2021 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.03 | +197% | Dec 2021 | Open |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +35% | Sep 2021 | Resolved |
| Copper, total [as Cu] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.03 | +53% | Sep 2021 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 2.83 mg/L | 5.00 | +43% | Jun 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 70.70 mg/L | 45.00 | +57% | Nov 2017 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 4.10 mg/L | 5.00 | +18% | Jul 2017 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 29.29 mg/L | 25.00 | +17% | Jun 2017 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 102.90 mg/L | 40.00 | +157% | Jun 2017 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 2.90 mg/L | 5.00 | +42% | Jun 2017 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 20.50 mg/L | 15.20 | +35% | Jan 2017 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.30 mg/L | 5.00 | +34% | Aug 2016 | 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.
Administrative - Formal
· Case 07-2025-0110 · Sep 16, 2025
$3,000
State CWA Non Penalty AO
Clean Water Act
· Case IA-3659 · Oct 30, 1996
State CWA Non Penalty AO
Clean Water Act
· Case IA-N00004584 · Oct 30, 1996
State CWA Non Penalty AO
Clean Water Act
· Case IA-N3659 · Oct 30, 1996
State CWA Non Penalty AO
Clean Water Act
· Case IA-3660 · Apr 26, 1994
State CWA Non Penalty AO
Clean Water Act
· Case IA-N3660 · Apr 26, 1994
State CWA Non Penalty AO
Clean Water Act
· Case IA-N3661 · Apr 18, 1991
State CWA Non Penalty AO
Clean Water Act
· Case IA-3661 · Apr 18, 1991
Other facilities in MAHASKA County, IA
MAHASKA COUNTY SANITARY LANDFILL
OSKALOOSA, IA
· Administrative and Support and Waste Management
BEACON CITY OF STP
BEACON, IA
· Utilities
MAHASKA RURAL WATER (NEW SHARON)
NEW SHARON, IA
CITY OF OSKALOOSA
OSKALOOSA, IA
DFS OSKALOOSA LLC
OSKALOOSA, IA
· Wholesale Trade
OSKALOOSA MUNICIPAL WATER DEPT
OSKALOOSA, IA
· Utilities