Non-Compliance
Clean Water Act
DCSD WASTEWATER TREATMENT PLANT 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
-
13 RESEARCH PARK DR.
WELDON SPRING, MO 63304
View on map ↗ - County
- ST CHARLES County
- Inspections
- 5 · last Aug 25, 2025
- Total Penalties
- $0
- Registry ID
- 110006377777
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.
3
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 | Schedule Event unachieved and not reported | Jan 28, 2026 | Feb 28, 2026 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Apr 7, 2025 | Apr 7, 2025 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 7, 2025 | Apr 7, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Dec 1, 2023 | Jan 26, 2024 | Resolved |
| cwa | Schedule Event reported late | Dec 1, 2023 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 1, 2023 | — | Open |
| cwa | Schedule Event unachieved but reported | Dec 1, 2023 | Jan 26, 2024 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Nov 14, 2023 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 28, 2023 | Jun 22, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2023 | Jun 22, 2023 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 28, 2023 | — | Open |
| cwa | Schedule Event reported late | Jan 28, 2023 | — | Open |
| cwa | Schedule Event reported late | Dec 1, 2022 | — | Open |
| cwa | Schedule Event unachieved but reported | Dec 1, 2022 | May 24, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Dec 1, 2022 | May 24, 2023 | Resolved |
| cwa | Schedule Event achieved late but reported | Dec 1, 2022 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 1, 2022 | May 24, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 1, 2022 | May 24, 2023 | Resolved |
| cwa | Schedule Event reported late | Nov 1, 2022 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 1, 2022 | — | Open |
| cwa | Effluent Violations - Numeric effluent violation | Oct 20, 2020 | Nov 13, 2020 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Oct 20, 2020 | Nov 13, 2020 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Oct 20, 2020 | Nov 13, 2020 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 1, 2020 | Apr 1, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Feb 1, 2017 | — | Open |
| cwa | Schedule Event reported late | Feb 1, 2017 | — | Open |
| cwa | Schedule Event reported late | Jan 28, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 28, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 1, 2017 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 1, 2017 | — | Open |
| cwa | Schedule Event reported late | Jan 1, 2017 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 1, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Oct 31, 2012 | — | Open |
| cwa | Schedule Event unachieved but reported | Oct 31, 2012 | Apr 12, 2013 | Resolved |
| cwa | Schedule Event reported late | Oct 31, 2012 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 31, 2012 | Apr 12, 2013 | 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 |
|---|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 7.08 mg/L | 4.50 | +57% | May 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 7.71 mg/L | 6.80 | +13% | Dec 2020 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 7.89 mg/L | 4.50 | +75% | Aug 2020 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 387.30 MPN/100mL | 126.00 | +207% | Oct 2019 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 387.30 MPN/100mL | 126.00 | +207% | Sep 2019 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 727.00 MPN/100mL | 126.00 | +477% | Aug 2019 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 280.30 MPN/100mL | 126.00 | +122% | Feb 2019 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 133.30 MPN/100mL | 126.00 | +6% | Oct 2018 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 126.00 | +1,820% | Feb 2018 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 2,419.00 MPN/100mL | 126.00 | +1,820% | Jan 2018 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 204.00 MPN/100mL | 126.00 | +62% | Aug 2017 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 1,773.00 MPN/100mL | 126.00 | +1,307% | Jul 2017 | Open |
| E. coli, colony forming units [CFU] | DMR, Limited - Numeric Violation | 488.00 MPN/100mL | 126.00 | +287% | May 2017 | Open |
Other facilities in ST CHARLES County, MO
FRED WEBER INC-CONCRETE BTCH 4/PORT-0078
SAINT PETERS, TOWNSHIP OF, MO
· Manufacturing
LANDVATTER READY MIX INC.
SAINT CHARLES, TOWNSHIP OF, MO
· Manufacturing
ST PETERS PWS
SAINT PETERS, MO
GE WATER & PROCESS TECHNOLOGIES - ST. PETERS
ST. PETERS, MO
· Manufacturing
BEST CLEANERS AND ALTERATIONS
COTTLEVILLE, MO
· Other Services
WHISK PRODUCTS INC
WENTZVILLE, MO
· Manufacturing