Non-Compliance
Clean Water Act
MENDON WWTF
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
-
MENDON
MENDON, MO 64660
View on map ↗ - County
- CHARITON County
- Total Penalties
- $0
- Registry ID
- 110009874591
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.
11
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 | Schedule Event unachieved and not reported | Aug 31, 2025 | Oct 1, 2025 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 31, 2024 | Oct 1, 2024 | Resolved |
| cwa | Schedule Event unachieved and not reported | Aug 18, 2024 | Sep 18, 2024 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 28, 2024 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 28, 2024 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2024 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2024 | — | Open |
| cwa | Schedule Event unachieved but reported | Aug 31, 2023 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Aug 31, 2023 | — | Open |
| cwa | Schedule Event reported late | Aug 31, 2023 | — | Open |
| cwa | Schedule Event unachieved and not reported | Aug 31, 2023 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2023 | — | Open |
| cwa | Schedule Event unachieved but reported | Jan 28, 2023 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2023 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 28, 2023 | — | Open |
| cwa | Schedule Event unachieved but reported | Aug 31, 2022 | Mar 28, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Aug 31, 2022 | — | Open |
| cwa | Schedule Event reported late | Aug 31, 2022 | — | Open |
| cwa | Schedule Event unachieved and not reported | Aug 31, 2022 | Mar 28, 2024 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Apr 6, 2021 | Jun 28, 2021 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Apr 6, 2021 | Jun 28, 2021 | Resolved |
| cwa | Permit Violations - Failure to Submit Timely Permit Renewal Application | Apr 6, 2021 | Jun 28, 2021 | Resolved |
| cwa | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | Apr 6, 2021 | Jun 28, 2021 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 6, 2021 | Jun 28, 2021 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 28, 2021 | Mar 15, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2021 | Mar 15, 2021 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2021 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 28, 2021 | — | Open |
| cwa | Effluent Violations - Numeric effluent violation | Mar 30, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Aug 1, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Aug 1, 2016 | Dec 21, 2016 | Resolved |
| cwa | Schedule Event reported late | Aug 1, 2016 | — | Open |
| cwa | Schedule Event unachieved but reported | Aug 1, 2016 | Dec 21, 2016 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2016 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 28, 2016 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2016 | Aug 12, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 28, 2016 | Aug 12, 2016 | Resolved |
| cwa | Schedule Event unachieved but reported | Apr 28, 2014 | — | Open |
| cwa | Schedule Event unachieved and not reported | Apr 28, 2014 | — | Open |
| cwa | Schedule Event reported late | Apr 28, 2014 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 28, 2014 | — | Open |
| cwa | Schedule Event unachieved but reported | Oct 28, 2013 | — | Open |
| cwa | Schedule Event reported late | Oct 28, 2013 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 28, 2013 | — | Open |
| cwa | Schedule Event achieved late but reported | Oct 28, 2013 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 28, 2013 | — | Open |
| cwa | Schedule Event unachieved but reported | Apr 28, 2013 | — | Open |
| cwa | Schedule Event unachieved and not reported | Apr 28, 2013 | — | Open |
| cwa | Schedule Event reported late | Apr 28, 2013 | — | 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 |
|---|---|---|---|---|---|---|
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +135% | Sep 2024 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 53.00 % | 65.00 | +34% | Mar 2024 | Open |
| E. coli | DMR, Limited - Numeric Violation | 910.75 MPN/100mL | 206.00 | +342% | Sep 2021 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1,732.90 MPN/100mL | 1,030.00 | +68% | Sep 2021 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1,299.70 MPN/100mL | 206.00 | +531% | Oct 2020 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1,299.70 MPN/100mL | 1,030.00 | +26% | Oct 2020 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +99,999% | Sep 2020 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +99,999% | Sep 2020 | Open |
| E. coli | DMR, Limited - Numeric Violation | 613.10 MPN/100mL | 206.00 | +198% | Aug 2020 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 50.34 mg/L | 45.00 | +12% | Apr 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 76.90 mg/L | 70.00 | +10% | Apr 2020 | Open |
| E. coli | DMR, Limited - Numeric Violation | 344.80 MPN/100mL | 206.00 | +67% | Oct 2019 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +1,075% | Jul 2019 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +135% | Jul 2019 | Open |
| E. coli | DMR, Limited - Numeric Violation | 727.00 MPN/100mL | 206.00 | +253% | May 2019 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +99,999% | Oct 2018 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +99,999% | Oct 2018 | Open |
| E. coli | DMR, Limited - Numeric Violation | 248.10 MPN/100mL | 206.00 | +20% | May 2018 | Open |
| E. coli | DMR, Limited - Overdue | 387.30 MPN/100mL | 206.00 | +88% | Oct 2017 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 387.30 MPN/100mL | 206.00 | +88% | Oct 2017 | Open |
| E. coli | DMR, Limited - Numeric Violation | 461.10 MPN/100mL | 206.00 | +124% | Aug 2017 | Open |
| E. coli | DMR, Limited - Numeric Violation | 866.40 MPN/100mL | 206.00 | +321% | May 2017 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +1,075% | Oct 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +135% | Oct 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +99,999% | Sep 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +99,999% | Sep 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1,042.20 MPN/100mL | 206.00 | +406% | Aug 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 1,042.20 MPN/100mL | 1,030.00 | +1% | Aug 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 267.00 mg/L | 110.00 | +143% | Jul 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.00 MPN/100mL | 1,030.00 | +135% | Jul 2016 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 267.00 mg/L | 70.00 | +281% | Jul 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.00 MPN/100mL | 206.00 | +1,074% | Jul 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 313.00 MPN/100mL | 206.00 | +52% | Jun 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 920.00 MPN/100mL | 206.00 | +347% | May 2016 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,030.00 | +99,999% | Oct 2015 | Open |
| E. coli | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 206.00 | +1,075% | Oct 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 Administrative Order of Consent
Clean Water Act
· Case MO-NBF000003153 · Aug 18, 2023
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