Non-Compliance
Clean Water Act
WALNUT CREEK SUBDIVISION - SHARED FACILITY
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
-
12320 AUTUMN TREE LANE
ELLICOTT CITY, MD 21029
View on map ↗ - County
- HOWARD County
- Inspections
- 2 · last Nov 13, 2025
- Total Penalties
- $0
- Registry ID
- 110064615395
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.
5
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
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 |
|---|---|---|---|---|---|---|
| Solids, total dissolved | DMR, Limited - Numeric Violation | 617.50 mg/L | 500.00 | +24% | Jun 2026 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 1,027.50 mg/L | 500.00 | +106% | Jun 2026 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1.41 MPN/100mL | 1.00 | +41% | Dec 2024 | Open |
| E. coli | DMR, Limited - Numeric Violation | 6.80 MPN/100mL | 1.00 | +580% | Dec 2024 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2.85 MPN/100mL | 1.00 | +185% | Dec 2023 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 772.50 mg/L | 500.00 | +55% | Dec 2023 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1.67 MPN/100mL | 1.00 | +67% | Dec 2023 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2.99 MPN/100mL | 1.00 | +199% | Dec 2023 | Open |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 522.50 mg/L | 500.00 | +5% | Dec 2023 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 10.27 mg/L | 10.00 | +3% | Mar 2023 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 15.49 mg/L | 10.00 | +55% | Feb 2023 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 14.46 mg/L | 10.00 | +45% | Jan 2023 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 1.50 MPN/100mL | 1.00 | +50% | Dec 2022 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.07 mg/L | 10.00 | +11% | Dec 2022 | Resolved |
| E. coli | DMR, Limited - Overdue | 2.60 MPN/100mL | 1.00 | +160% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Overdue | 1.19 MPN/100mL | 1.00 | +19% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 1.19 MPN/100mL | 1.00 | +19% | Dec 2021 | Open |
| E. coli | DMR, Limited - Overdue | 2.19 MPN/100mL | 1.00 | +119% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 2.19 MPN/100mL | 1.00 | +119% | Dec 2021 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1.50 MPN/100mL | 1.00 | +50% | Dec 2021 | Open |
| E. coli | DMR, Limited - Overdue | 1.50 MPN/100mL | 1.00 | +50% | Dec 2021 | Resolved |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 747.50 mg/L | 500.00 | +50% | Dec 2021 | Open |
| E. coli | DMR, Limited - Overdue | 1.19 MPN/100mL | 1.00 | +19% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 1.19 MPN/100mL | 1.00 | +19% | Dec 2021 | Open |
| E. coli | DMR, Limited - Overdue | 1.50 MPN/100mL | 1.00 | +50% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 1.50 MPN/100mL | 1.00 | +50% | Dec 2021 | Open |
| Solids, total dissolved | DMR, Limited - Overdue | 747.50 mg/L | 500.00 | +50% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Overdue | 2.19 MPN/100mL | 1.00 | +119% | Dec 2021 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 2.19 MPN/100mL | 1.00 | +119% | Dec 2021 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2.60 MPN/100mL | 1.00 | +160% | Dec 2021 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 14.18 mg/L | 10.00 | +42% | Nov 2021 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.06 MGD | 0.06 | +15% | Sep 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 33.69 mg/L | 30.00 | +12% | Apr 2021 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 13.01 mg/L | 10.00 | +30% | Apr 2021 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 10.52 mg/L | 10.00 | +5% | Mar 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 35.91 mg/L | 30.00 | +20% | Mar 2021 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 12.54 mg/L | 10.00 | +25% | Jan 2021 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 11.03 mg/L | 10.00 | +10% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Overdue | 24.00 MPN/100mL | 1.00 | +2,300% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 24.00 MPN/100mL | 1.00 | +2,300% | Dec 2020 | Open |
| E. coli | DMR, Limited - Overdue | 13.00 MPN/100mL | 1.00 | +1,200% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 13.00 MPN/100mL | 1.00 | +1,200% | Dec 2020 | Open |
| E. coli | DMR, Limited - Overdue | 443.50 MPN/100mL | 1.00 | +44,250% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Overdue | 76.00 MPN/100mL | 1.00 | +7,500% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 76.00 MPN/100mL | 1.00 | +7,500% | Dec 2020 | Open |
| Solids, total dissolved | DMR, Limited - Overdue | 845.00 mg/L | 500.00 | +69% | Dec 2020 | Resolved |
| Solids, total dissolved | DMR, Limited - Numeric Violation | 845.00 mg/L | 500.00 | +69% | Dec 2020 | Open |
| E. coli | DMR, Limited - Overdue | 11.00 MPN/100mL | 1.00 | +1,000% | Dec 2020 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 69.25 MPN/100mL | 1.00 | +6,825% | Dec 2020 | Open |
| E. coli | DMR, Limited - Overdue | 69.25 MPN/100mL | 1.00 | +6,825% | Dec 2020 | Resolved |
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