Non-Compliance
Clean Water Act
MONONGAHELA STP
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $9,000 in total penalties since records began.
- Address
-
12TH & RAILROAD ST
MONONGAHELA, PA 15063
View on map ↗ - County
- WASHINGTON County
- Inspections
- 8 · last Jul 16, 2025
- Total Penalties
- $9,000 · last May 20, 2021
- Registry ID
- 110001117176
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.
1
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 | Effluent Violations - Numeric effluent violation | Oct 26, 2023 | — | Open |
| cwa | Failure to minimize or prevent an unanticipated prohibited bypass to waters of the U.S. | Oct 26, 2023 | Jan 11, 2024 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Jul 2, 2021 | — | Open |
| cwa | Monitoring Violations - Frequency of Sampling Violation | Feb 24, 2021 | — | Open |
| cwa | Effluent Violations - Unapproved Bypass | Feb 24, 2021 | Jul 2, 2021 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Feb 24, 2021 | — | Open |
| cwa | Effluent Violations - Numeric effluent violation | Oct 10, 2019 | — | Open |
| cwa | Schedule Event reported late | Sep 29, 1998 | — | Open |
| cwa | Schedule Event unachieved but reported | Sep 29, 1998 | Mar 3, 2003 | Resolved |
| cwa | Schedule Event unachieved and not reported | Sep 29, 1998 | Mar 3, 2003 | Resolved |
| cwa | Schedule Event achieved late but reported | Sep 29, 1998 | — | Open |
| cwa | Schedule Event achieved late but reported | Sep 29, 1997 | — | Open |
| cwa | Schedule Event unachieved and not reported | Sep 29, 1997 | Mar 9, 1999 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 28, 1996 | Oct 15, 1996 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 28, 1996 | — | 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 |
|---|---|---|---|---|---|---|
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 10,000.00 | +99,999% | Nov 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,683.00 MPN/100mL | 1,000.00 | +268% | Aug 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,922.00 MPN/100mL | 1,000.00 | +292% | Jul 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,266.00 MPN/100mL | 1,000.00 | +227% | Jun 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 258.33 kg/d | 212.93 | +21% | Apr 2024 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 144.37 kg/d | 142.10 | +2% | Apr 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 50.00 mg/L | 45.00 | +11% | Nov 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 256.96 kg/d | 212.93 | +21% | Jan 2023 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 150.73 kg/d | 142.10 | +6% | Jan 2023 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.56 mg/L | 0.50 | +12% | Feb 2022 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 1,000.00 | +142% | Aug 2021 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 1.90 mg/L | 1.60 | +19% | Jun 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 11,199.00 MPN/100mL | 1,000.00 | +1,020% | May 2020 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 274.67 kg/d | 212.93 | +29% | Mar 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 2.20 mg/L | 1.60 | +38% | Nov 2019 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 24,196.00 MPN/100mL | 10,000.00 | +142% | Oct 2019 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 17,329.00 MPN/100mL | 1,000.00 | +1,633% | Jun 2019 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 155.27 kg/d | 142.10 | +9% | Feb 2019 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 2,606.41 kg/d | 212.93 | +1,124% | Feb 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.58 mg/L | 0.50 | +16% | Feb 2019 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 24,196.00 MPN/100mL | 10,000.00 | +142% | Feb 2019 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 24,196.00 MPN/100mL | 10,000.00 | +142% | Dec 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 10,462.00 MPN/100mL | 10,000.00 | +5% | Nov 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,851.00 MPN/100mL | 1,000.00 | +185% | Sep 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,635.00 MPN/100mL | 1,000.00 | +263% | Jul 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,609.00 MPN/100mL | 1,000.00 | +261% | Jun 2018 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 12,098.00 MPN/100mL | 10,000.00 | +21% | Mar 2018 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 272.40 kg/d | 212.93 | +28% | Mar 2018 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 24,196.00 MPN/100mL | 10,000.00 | +142% | Feb 2018 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 180.69 kg/d | 170.70 | +6% | Feb 2018 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 297.82 kg/d | 255.60 | +17% | Feb 2018 | Resolved |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 232.90 kg/d | 212.93 | +9% | Feb 2018 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 4,839.00 MPN/100mL | 1,000.00 | +384% | Sep 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 432.66 kg/d | 170.70 | +153% | Jul 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 146.00 mg/L | 30.00 | +387% | Jul 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 691.44 kg/d | 255.60 | +171% | Jul 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 882.58 kg/d | 255.60 | +245% | Apr 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 556.60 kg/d | 170.70 | +226% | Apr 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 164.00 mg/L | 30.00 | +447% | Apr 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 168.00 mg/L | 30.00 | +460% | Dec 2015 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 852.61 kg/d | 170.70 | +399% | Dec 2015 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 1,439.63 kg/d | 255.60 | +463% | Dec 2015 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,400.00 MPN/100mL | 1,000.00 | +140% | Jun 2015 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 42.00 mg/L | 40.00 | +5% | May 2015 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 263.77 kg/d | 255.60 | +3% | Apr 2015 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 235.63 kg/d | 212.93 | +11% | Mar 2015 | 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 CWA Penalty AO
Clean Water Act
· Case PA-0025950_05202021 · May 20, 2021
$9,000
State Administrative Order of Consent
Clean Water Act
· Case PA-0025950_06292005 · Jun 29, 2005
$4,500
State CWA Non Penalty AO
Clean Water Act
· Case PA-0025950_05102002 · May 10, 2002
State Administrative Order of Consent
Clean Water Act
· Case PA-0025950_04231999 · Apr 23, 1999
$39,500
State Administrative Order of Consent
Clean Water Act
· Case PA-N00000021 · Apr 23, 1999
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