Non-Compliance
Clean Water Act
OAK HARBOR 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
-
355 E WATER ST
OAK HARBOR, OH 43449
View on map ↗ - County
- OTTAWA County
- Inspections
- 3 · last Aug 14, 2023
- Total Penalties
- $0 · last Aug 19, 2019
- Registry ID
- 110006285144
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.
12
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 reported late | Jan 1, 2025 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 1, 2025 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 1, 2025 | Dec 30, 2025 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 1, 2025 | Dec 30, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 1, 2024 | Sep 30, 2024 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Aug 14, 2023 | Nov 19, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 2, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 2, 2020 | Jan 6, 2021 | Resolved |
| cwa | Schedule Event unachieved but reported | Mar 2, 2020 | Jan 6, 2021 | Resolved |
| cwa | Schedule Event reported late | Mar 2, 2020 | — | Open |
| cwa | Schedule Event reported late | Mar 1, 2020 | — | Open |
| cwa | Schedule Event unachieved but reported | Mar 1, 2020 | Jun 15, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 1, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2020 | Jun 15, 2020 | Resolved |
| cwa | Schedule Event reported late | Sep 19, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Sep 19, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Sep 19, 2019 | Feb 19, 2020 | Resolved |
| cwa | Schedule Event unachieved but reported | Sep 19, 2019 | Feb 19, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Sep 3, 2019 | — | Open |
| cwa | Schedule Event reported late | Sep 3, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Sep 3, 2019 | Feb 19, 2020 | Resolved |
| cwa | Schedule Event unachieved but reported | Sep 3, 2019 | Feb 19, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Apr 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 |
|---|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.81 mg/L | 1.00 | +81% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.08 mg/L | 1.50 | +39% | Oct 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.75 mg/L | 1.50 | +17% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.27 mg/L | 1.00 | +27% | Sep 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.63 mg/L | 1.00 | +63% | Aug 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.27 kg/d | 3.50 | +51% | Aug 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.14 mg/L | 1.50 | +43% | Aug 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.70 kg/d | 5.30 | +102% | Aug 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.75 kg/d | 3.50 | +64% | Jul 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.73 mg/L | 1.00 | +73% | Jul 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.53 mg/L | 1.50 | +69% | Jul 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.50 kg/d | 5.30 | +98% | Jul 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 170.00 kg/d | 158.00 | +8% | Jul 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.67 kg/d | 5.30 | +82% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.17 kg/d | 3.50 | +19% | Jun 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.44 mg/L | 1.00 | +44% | Jun 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.14 mg/L | 1.50 | +43% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.85 kg/d | 3.50 | +153% | May 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.91 mg/L | 1.50 | +27% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 160.00 kg/d | 158.00 | +1% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 110.00 kg/d | 105.00 | +5% | May 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.03 mg/L | 1.00 | +103% | May 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.30 kg/d | 5.30 | +94% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 55.00 mg/L | 45.00 | +22% | Apr 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 220.00 kg/d | 105.00 | +110% | Apr 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 710.00 kg/d | 158.00 | +349% | Apr 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 190.00 kg/d | 159.00 | +19% | Apr 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 210.00 kg/d | 158.00 | +33% | Mar 2025 | Open |
| Mercury, total low level | DMR, Limited - Numeric Violation | 0.00 kg/d | 0.00 | +146% | Mar 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 180.00 kg/d | 158.00 | +14% | Feb 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.99 mg/L | 1.00 | +199% | Oct 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.74 kg/d | 3.50 | +35% | Oct 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.55 mg/L | 1.50 | +137% | Oct 2024 | Open |
| Mercury, total low level | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +161% | Aug 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.78 mg/L | 1.00 | +178% | Aug 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.74 kg/d | 3.50 | +7% | Aug 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.50 mg/L | 1.50 | +133% | Aug 2024 | Open |
| Mercury, total low level | DMR, Limited - Numeric Violation | 0.00 kg/d | 0.00 | +73% | Aug 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.58 kg/d | 3.50 | +88% | Jul 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.80 mg/L | 1.50 | +153% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.44 mg/L | 1.00 | +144% | Jul 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 13.00 kg/d | 5.30 | +145% | Jul 2024 | Open |
| Mercury, total low level | DMR, Limited - Numeric Violation | 0.00 kg/d | 0.00 | +386% | Jun 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.45 mg/L | 1.00 | +45% | Jun 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.72 kg/d | 5.30 | +27% | Jun 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.47 kg/d | 3.50 | +28% | Jun 2024 | Resolved |
| Mercury, total low level | DMR, Limited - Numeric Violation | 0.00 mg/L | 0.00 | +219% | Jun 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.13 mg/L | 1.50 | +42% | Jun 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.83 kg/d | 3.50 | +181% | May 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.78 mg/L | 1.50 | +85% | 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.
Administrative - Formal
· Case 05-2026-0313 · Mar 4, 2026
State CWA Penalty AO
Clean Water Act
· Case OH-19-032 · Aug 19, 2019
$5,000
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