Non-Compliance
Clean Water Act
CITY OF HARLOWTON 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
-
17 SOUTH CENTRAL
HARLOWTON, MT 59036
View on map ↗ - County
- WHEATLAND County
- Inspections
- 1 · last Dec 18, 2025
- Total Penalties
- $0 · last Aug 23, 2016
- Registry ID
- 110009715148
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.
4
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 | Reporting Violations - Improper/ Incorrect Reporting | Dec 18, 2025 | Feb 6, 2026 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Dec 18, 2025 | Feb 6, 2026 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Mar 22, 2021 | May 28, 2021 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Mar 22, 2021 | May 28, 2021 | Resolved |
| cwa | Monitoring Violations - Analysis not Conducted | Mar 22, 2021 | May 28, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 11, 2015 | Nov 8, 2018 | Resolved |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Jan 28, 2015 | Mar 13, 2015 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 28, 2015 | Mar 13, 2015 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Jan 28, 2015 | Mar 13, 2015 | Resolved |
| cwa | Reporting Violations - Late Submittal of DMRs | Jan 28, 2015 | Mar 13, 2015 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Jan 28, 2015 | Mar 13, 2015 | Resolved |
| cwa | Schedule Event reported late | Oct 1, 2011 | — | Open |
| cwa | Schedule Event achieved late but reported | Oct 1, 2011 | — | Open |
| cwa | Schedule Event unachieved but reported | Oct 28, 2010 | Aug 17, 2011 | Resolved |
| cwa | Schedule Event achieved late but reported | Oct 28, 2010 | — | Open |
| cwa | Schedule Event reported late | Oct 28, 2010 | — | Open |
| cwa | Schedule Event unachieved and not reported | Oct 28, 2010 | Nov 8, 2018 | Resolved |
| cwa | Schedule Event achieved late but reported | Apr 28, 2010 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Mar 2, 2010 | Apr 30, 2010 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Mar 2, 2010 | Apr 30, 2010 | Resolved |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Mar 2, 2010 | Nov 3, 2010 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Jul 1, 2005 | Dec 15, 2010 | 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 |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 45.00 | +2% | Dec 2025 | Open |
| Solids, total suspended | DMR, Limited - Overdue | 69.00 mg/L | 45.00 | +53% | May 2025 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 69.00 mg/L | 65.00 | +6% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Overdue | 69.00 mg/L | 65.00 | +6% | May 2025 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Overdue | 44.00 mg/L | 30.00 | +47% | May 2025 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 44.00 mg/L | 30.00 | +47% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 69.00 mg/L | 45.00 | +53% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 47.00 mg/L | 45.00 | +4% | Aug 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 51.00 mg/L | 45.00 | +13% | Jul 2024 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 36.00 mg/L | 30.00 | +20% | Nov 2023 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 32.69 kg/d | 24.97 | +31% | Nov 2023 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 252.00 | +860% | Jul 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 40.86 kg/d | 37.50 | +9% | Jul 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,420.00 MPN/100mL | 126.00 | +1,821% | Jul 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,576.67 MPN/100mL | 252.00 | +922% | Jun 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Overdue | 2,576.67 MPN/100mL | 252.00 | +922% | Jun 2021 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,576.67 MPN/100mL | 126.00 | +1,945% | Jun 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Overdue | 2,576.67 MPN/100mL | 126.00 | +1,945% | Jun 2021 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,370.54 MPN/100mL | 126.00 | +988% | May 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,370.54 MPN/100mL | 252.00 | +444% | May 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,421.00 MPN/100mL | 630.00 | +126% | Feb 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,421.00 MPN/100mL | 1,260.00 | +13% | Feb 2021 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 931.00 MPN/100mL | 630.00 | +48% | Dec 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,058.80 MPN/100mL | 126.00 | +740% | Nov 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,058.80 MPN/100mL | 630.00 | +68% | Nov 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,058.80 MPN/100mL | 252.00 | +320% | Nov 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 162.65 MPN/100mL | 126.00 | +29% | Oct 2020 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 37.00 mg/L | 30.00 | +23% | Jun 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 205.50 MPN/100mL | 126.00 | +63% | Jun 2020 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 270.80 MPN/100mL | 252.00 | +7% | Apr 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.10 | +30% | Jan 2020 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,763.00 MPN/100mL | 630.00 | +180% | Dec 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.18 mg/L | 0.10 | +80% | Dec 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 12,033.00 MPN/100mL | 1,260.00 | +855% | Dec 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.17 mg/L | 0.10 | +70% | Nov 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,502.00 MPN/100mL | 630.00 | +138% | Nov 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 1,260.00 | +92% | Nov 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 45.00 | +2% | Nov 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.15 mg/L | 0.10 | +50% | Oct 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 648.80 MPN/100mL | 252.00 | +157% | Oct 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.17 mg/L | 0.10 | +70% | Sep 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 410.60 MPN/100mL | 252.00 | +63% | Sep 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.11 mg/L | 0.10 | +10% | Jun 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 2,419.60 MPN/100mL | 252.00 | +860% | May 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.10 | +30% | May 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 265.30 MPN/100mL | 126.00 | +111% | May 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.18 mg/L | 0.10 | +80% | Apr 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 613.10 MPN/100mL | 252.00 | +143% | Apr 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.10 | +40% | Mar 2019 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 0.14 mg/L | 0.10 | +40% | Feb 2019 | 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 MT-FID2042 · Aug 17, 2011
$1,550
State CWA Non Penalty AO
Clean Water Act
· Case MT-N00000086 · May 23, 1997
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