Non-Compliance
Clean Water Act
RCRA
MASON 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
-
345 N JEFFERSON ST
MASON, MI 48854
View on map ↗ - County
- INGHAM County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 3 · last Sep 11, 2025
- Total Penalties
- $0 · last Nov 21, 2011
- Registry ID
- 110000733145
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
0
Hazardous Waste (RCRA)
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 | Reporting Violations - Late Submittal of DMRs | Nov 29, 2023 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 1, 2023 | Dec 31, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 30, 2022 | Oct 29, 2022 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | Apr 23, 2022 | — | Open |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Mar 1, 2022 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | Feb 17, 2022 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 30, 2021 | Oct 29, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jul 30, 2020 | Oct 29, 2020 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | May 18, 2020 | — | Open |
| cwa | Permit Violations - Discharge Without a Valid Permit | Jan 11, 2020 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 30, 2019 | Oct 29, 2019 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | Jun 20, 2019 | — | Open |
| cwa | Reporting Violations - Late Submittal of DMRs | Oct 31, 2018 | — | Open |
| cwa | Schedule Event unachieved and not reported | Apr 14, 2016 | Aug 30, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Apr 14, 2016 | Aug 30, 2016 | Resolved |
| cwa | Schedule Event reported late | Apr 14, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 14, 2016 | — | Open |
| cwa | Schedule Event reported late | Jul 30, 2015 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 30, 2015 | Jun 30, 2017 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 30, 2015 | — | Open |
| cwa | Schedule Event unachieved but reported | Jul 30, 2015 | Jun 30, 2017 | Resolved |
| cwa | Schedule Event unachieved but reported | Jun 14, 2015 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jun 14, 2015 | — | Open |
| cwa | Schedule Event achieved late but reported | Jun 14, 2015 | — | Open |
| cwa | Schedule Event reported late | Jun 14, 2015 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 1, 2014 | — | Open |
| cwa | Schedule Event reported late | Dec 1, 2014 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 1, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 1, 2014 | Jan 17, 2017 | Resolved |
| cwa | Schedule Event unachieved but reported | Dec 1, 2014 | Jan 17, 2017 | Resolved |
| cwa | Schedule Event reported late | Dec 1, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 1, 2014 | Jan 17, 2017 | Resolved |
| cwa | Schedule Event unachieved but reported | Dec 1, 2014 | Jan 17, 2017 | Resolved |
| cwa | Schedule Event reported late | Nov 14, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 14, 2014 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 14, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Nov 14, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Oct 30, 2014 | Aug 20, 2015 | Resolved |
| cwa | Schedule Event achieved late but reported | Oct 30, 2014 | — | Open |
| cwa | Schedule Event reported late | Oct 30, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 30, 2014 | Aug 20, 2015 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 2014 | — | Open |
| cwa | Schedule Event reported late | Jul 31, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jul 31, 2014 | Aug 20, 2015 | Resolved |
| cwa | Schedule Event unachieved but reported | Jul 31, 2014 | Aug 20, 2015 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | Sep 13, 2008 | — | 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 |
|---|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 2.00 mg/L | 6.00 | +67% | Jan 2026 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.50 mg/L | 11.00 | +14% | Jan 2026 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.10 mg/L | 6.00 | +48% | Dec 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 32.00 mg/L | 20.00 | +60% | Jun 2025 | Resolved |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 2.35 toxic | 1.20 | +96% | Jun 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.20 mg/L | 4.00 | +5% | Jun 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 215.24 kg/d | 59.02 | +265% | May 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 29.46 kg/d | 22.70 | +30% | May 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.40 mg/L | 4.00 | +10% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 152.73 kg/d | 113.50 | +35% | May 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,176.86 kg/d | 254.24 | +363% | Apr 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 272.40 kg/d | 227.00 | +20% | Apr 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 600.00 MPN/100mL | 200.00 | +200% | Apr 2025 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 84.00 % | 85.00 | +7% | Apr 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 468.00 MPN/100mL | 400.00 | +17% | Apr 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 496.09 kg/d | 172.52 | +188% | Apr 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 53.64 mg/L | 45.00 | +19% | Apr 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.30 mg/L | 4.00 | +8% | Oct 2024 | Resolved |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 1.40 toxic | 1.20 | +17% | Aug 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.60 mg/L | 4.00 | +15% | Aug 2024 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.60 mg/L | 2.00 | +430% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.86 kg/d | 2.72 | +78% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.76 mg/L | 0.50 | +52% | Jul 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 5.00 mg/L | 4.00 | +25% | Jul 2024 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 4.70 mg/L | 6.00 | +22% | Jul 2024 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.26 kg/d | 11.35 | +8% | Jul 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 24.97 kg/d | 22.70 | +10% | Jul 2024 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 272.40 kg/d | 172.52 | +58% | Jul 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.30 mg/L | 4.00 | +8% | Jun 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.10 mg/L | 4.00 | +3% | May 2024 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 100.79 kg/d | 95.34 | +6% | Jan 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.30 mg/L | 4.00 | +8% | May 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 145.10 kg/d | 90.80 | +60% | Apr 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 743.65 kg/d | 254.24 | +193% | Apr 2023 | Open |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 6.70 toxic | 1.20 | +458% | Apr 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 261.78 kg/d | 227.00 | +15% | Apr 2023 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 548.00 MPN/100mL | 400.00 | +37% | Apr 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 17.00 mg/L | 11.00 | +55% | Dec 2022 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 4.30 mg/L | 4.00 | +8% | Oct 2022 | Open |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 1.80 toxic | 1.20 | +50% | Jun 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 332.33 kg/d | 254.24 | +31% | Mar 2022 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 97.61 kg/d | 95.34 | +2% | Feb 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 201.58 kg/d | 172.52 | +17% | Feb 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 544.80 kg/d | 254.24 | +114% | Feb 2022 | Open |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 2.20 toxic | 1.20 | +83% | Jan 2022 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 2.70 mg/L | 2.00 | +35% | Sep 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.20 mg/L | 2.00 | +60% | Aug 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 53.00 mg/L | 30.00 | +77% | Jul 2021 | Open |
| Toxicity, choice of species | DMR, Limited - Numeric Violation | 1.35 toxic | 1.20 | +13% | Apr 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 302.36 kg/d | 113.50 | +166% | May 2020 | 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 Administrative Order of Consent
Clean Water Act
· Case MI-ACO-000069 · Nov 21, 2011
$5,000
State Administrative Order of Consent
Clean Water Act
· Case MI-74440238273774521 · Jun 17, 2010
CWA 309A AO For Compliance
Clean Water Act
· Case 05-1984-N112 · Feb 10, 1984
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