ONSTED 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
-
8657 SLEE ROAD
ONSTED, MI 49265
View on map ↗ - County
- LENAWEE County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 2 · last Jul 16, 2025
- Total Penalties
- $0
- Registry ID
- 110006740526
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.
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 | Reporting Violations - Late Submittal of DMRs | Jan 21, 2026 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Jun 21, 2025 | — | Open |
| cwa | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | May 27, 2025 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Apr 21, 2025 | — | Open |
| cwa | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | May 22, 2024 | — | Open |
| cwa | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | May 20, 2024 | — | Open |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Mar 21, 2023 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Jun 21, 2019 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Jan 21, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 1, 2017 | Mar 2, 2018 | Resolved |
| cwa | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | Nov 16, 2010 | — | Open |
| cwa | WW SSO - Discharge to Waters | Nov 16, 2010 | — | Open |
| cwa | Schedule Event achieved late but reported | May 1, 2010 | — | Open |
| cwa | Schedule Event achieved late but reported | May 1, 2010 | — | Open |
| cwa | Schedule Event achieved late but reported | May 1, 2010 | — | 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 |
|---|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 20.43 kg/d | 16.80 | +22% | May 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 2.90 mg/L | 5.00 | +42% | 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.