MASON WWTP NO 2
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
-
3200 MASON MORROW MILLGROVE RD
MASON, OH 45040
View on map ↗ - County
- WARREN County
- Inspections
- 4 · last Jun 4, 2025
- Total Penalties
- $0
- Registry ID
- 110064255808
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 | Schedule Event unachieved and not reported | Dec 1, 2021 | Jan 1, 2022 | Resolved |
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 |
|---|---|---|---|---|---|---|
| Molybdenum, total [as Mo] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +26% | Sep 2023 | Open |
| Molybdenum, total [as Mo] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +29% | Sep 2021 | Open |
| Molybdenum, total [as Mo] | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +14% | Sep 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 126.00 kg/d | 98.50 | +28% | Feb 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 1.59 mg/L | 1.30 | +22% | Feb 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.24 mg/L | 2.00 | +162% | Feb 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.48 mg/L | 2.00 | +124% | Jan 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.