Non-Compliance
Clean Water Act
WILLIAM HENRY APT STP
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
-
1086 KING RD
MALVERN, PA 19355
View on map ↗ - County
- CHESTER County
- Inspections
- 10 · last Jan 10, 2026
- Total Penalties
- $0 · last May 26, 2009
- Registry ID
- 110010973866
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 | Permit Violations - Failure to Pay Fees | Jan 10, 2026 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Nov 12, 2025 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Nov 6, 2024 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Dec 28, 2023 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Nov 6, 2023 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Nov 4, 2021 | — | Open |
| cwa | Permit Violations - Failure to Pay Fees | Nov 4, 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 |
|---|---|---|---|---|---|---|
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,200.00 MPN/100mL | 1,000.00 | +220% | Jan 2026 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 1,060.00 mg/L | 1,000.00 | +6% | Dec 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.06 | +17% | Nov 2025 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.10 mg/L | 0.06 | +67% | Oct 2025 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.06 | +17% | Sep 2025 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.25 mg/L | 0.20 | +25% | Aug 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 12.90 mg/L | 10.00 | +29% | Aug 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.06 | +17% | Aug 2025 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,300.00 MPN/100mL | 1,000.00 | +230% | May 2025 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 406.00 MPN/100mL | 200.00 | +103% | May 2025 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 1,090.00 mg/L | 1,000.00 | +9% | Mar 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.41 mg/L | 5.40 | +56% | Mar 2025 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.06 | +83% | Mar 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.48 mg/L | 5.40 | +1% | Feb 2025 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 1,055.00 mg/L | 1,000.00 | +6% | Dec 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.09 mg/L | 0.06 | +50% | Dec 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.09 mg/L | 0.06 | +50% | Nov 2024 | Resolved |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.34 mg/L | 0.20 | +70% | Nov 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.06 | +33% | Oct 2024 | Resolved |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 1,110.00 mg/L | 1,000.00 | +11% | Sep 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.07 mg/L | 0.06 | +17% | Sep 2024 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 5.65 mg/L | 6.00 | +6% | Sep 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 271.00 MPN/100mL | 200.00 | +36% | May 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,200.00 MPN/100mL | 1,000.00 | +220% | May 2024 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 11,900.00 MPN/100mL | 1,000.00 | +1,090% | Apr 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 15.00 mg/L | 10.00 | +50% | Jan 2024 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.56 mg/L | 0.50 | +12% | Jan 2024 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 5.31 mg/L | 6.00 | +12% | Jul 2023 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.84 mg/L | 0.50 | +68% | Mar 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 11.00 mg/L | 10.00 | +10% | Mar 2023 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,200.00 MPN/100mL | 1,000.00 | +120% | Feb 2023 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.51 mg/L | 0.50 | +2% | Jan 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 24.00 mg/L | 10.00 | +140% | Dec 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 3.45 kg/d | 2.63 | +31% | Dec 2022 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.81 mg/L | 0.50 | +62% | Dec 2022 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,700.00 MPN/100mL | 1,000.00 | +170% | Sep 2022 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 1,273.00 MPN/100mL | 200.00 | +537% | Sep 2022 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.70 mg/L | 0.50 | +40% | Apr 2022 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.70 mg/L | 0.50 | +40% | Aug 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 13.00 mg/L | 10.00 | +30% | Aug 2021 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.60 mg/L | 0.50 | +20% | Jun 2021 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.70 mg/L | 0.50 | +40% | Jan 2021 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,000.00 MPN/100mL | 1,000.00 | +100% | Jan 2021 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 0.90 mg/L | 0.50 | +80% | Dec 2020 | Resolved |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 200.00 MPN/100mL | 200.00 | +99,999% | Dec 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 20,000.00 MPN/100mL | 1,000.00 | +1,900% | Dec 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 15.00 mg/L | 10.00 | +50% | Dec 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,599.00 MPN/100mL | 200.00 | +1,700% | Nov 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 3,700.00 MPN/100mL | 1,000.00 | +270% | Nov 2020 | Open |
| Coliform, fecal general | DMR, Limited - Numeric Violation | 2,600.00 MPN/100mL | 1,000.00 | +160% | Sep 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 CWA Penalty AO
Clean Water Act
· Case PA-0050920_05262009 · May 26, 2009
$1,500
State CWA Penalty AO
Clean Water Act
· Case PA-0050920_02202008 · Feb 20, 2008
$7,000
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