CITY OF LAUREL WASTE WATER TREATMENT PLANT
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
-
1501 SEWER PLANT ROAD
LAUREL, MT 59044
View on map ↗ - County
- YELLOWSTONE County
- Inspections
- 4 · last Mar 27, 2025
- Total Penalties
- $0 · last Jan 17, 2015
- Registry ID
- 110000737249
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.
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 | WW Storm Water Non-Construction - Failure to Conduct Inspections | Sep 26, 2023 | Nov 28, 2023 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to submit required report (non-DMR) | Sep 26, 2023 | Nov 28, 2023 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | Sep 26, 2023 | Nov 28, 2023 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to Maintain Records | Sep 26, 2023 | Nov 28, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 15, 2023 | Mar 18, 2023 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 15, 2022 | Mar 18, 2022 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 15, 2021 | Mar 18, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 15, 2020 | Mar 17, 2020 | Resolved |
| cwa | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | Jan 10, 2019 | Mar 15, 2019 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Jan 10, 2019 | Mar 15, 2019 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 10, 2019 | Mar 15, 2019 | Resolved |
| cwa | Schedule Event unachieved but reported | Jan 28, 2017 | Apr 7, 2017 | Resolved |
| cwa | Schedule Event unachieved and not reported | Jan 28, 2017 | Apr 7, 2017 | Resolved |
| cwa | Schedule Event reported late | Jan 28, 2017 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 28, 2017 | — | Open |
| cwa | WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP | Nov 17, 2016 | Jan 23, 2017 | Resolved |
| cwa | Monitoring Violations - Frequency of Sampling Violation | Nov 17, 2016 | Jan 20, 2017 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Nov 17, 2016 | Jan 20, 2017 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to Maintain Records | Nov 17, 2016 | Jan 23, 2017 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to Conduct Inspections | Nov 17, 2016 | Jan 23, 2017 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | Nov 17, 2016 | Jan 23, 2017 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 1, 2014 | — | Open |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Apr 27, 2014 | May 1, 2014 | Resolved |
| cwa | WW SSO - Narrative effluent violation | Mar 7, 2014 | Mar 10, 2014 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Oct 15, 2013 | Oct 28, 2013 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Sep 8, 2013 | Oct 8, 2013 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | May 29, 2013 | Jul 1, 2013 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Mar 22, 2013 | Apr 30, 2013 | Resolved |
| cwa | Reporting Violations - Failure to Notify | Nov 15, 2012 | Apr 29, 2013 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Nov 15, 2012 | Apr 29, 2013 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Nov 15, 2012 | Apr 29, 2013 | Resolved |
| cwa | Effluent Violations - Numeric effluent violation | Nov 15, 2012 | Apr 29, 2013 | Resolved |
| cwa | WW SSO - Discharge to Waters | Dec 23, 2010 | Jan 4, 2011 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Dec 2, 2010 | Feb 7, 2011 | Resolved |
| cwa | Monitoring Violations - Analysis not Conducted | Dec 2, 2010 | Feb 7, 2011 | Resolved |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Dec 2, 2010 | Feb 7, 2011 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Dec 2, 2010 | Feb 7, 2011 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Feb 9, 2005 | Apr 29, 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 |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 167.16 kg/d | 149.82 | +12% | Jun 2023 | Open |
| Nitrite + Nitrate total [as N] | DMR, Limited - Numeric Violation | 10.20 mg/L | 10.00 | +2% | Apr 2021 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.29 mg/L | 2.80 | +196% | May 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 16.40 mg/L | 5.60 | +193% | May 2019 | Resolved |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,200.00 MPN/100mL | 252.00 | +376% | May 2019 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 39.39 kg/d | 33.14 | +19% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.30 mg/L | 5.60 | +84% | Apr 2019 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 3.34 mg/L | 2.80 | +19% | Apr 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 1,292.00 MPN/100mL | 252.00 | +413% | Apr 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 143.00 MPN/100mL | 126.00 | +13% | Apr 2019 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 7.10 mg/L | 5.60 | +27% | Jan 2019 | Open |
| Nitrite + Nitrate total [as N] | DMR, Limited - Numeric Violation | 16.10 mg/L | 10.00 | +61% | Jan 2019 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 203.82 MPN/100mL | 126.00 | +62% | May 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 322.06 MPN/100mL | 252.00 | +28% | May 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 286.04 kg/d | 149.82 | +91% | May 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 144.52 kg/d | 99.88 | +45% | May 2018 | Open |
| Phosphorus, total [as P] | DMR, Limited - Numeric Violation | 49.74 kg/d | 33.14 | +50% | Apr 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 295.68 MPN/100mL | 252.00 | +17% | Apr 2018 | Open |
| E. coli, MTEC-MF | DMR, Limited - Numeric Violation | 188.54 MPN/100mL | 126.00 | +50% | Apr 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 197.40 kg/d | 149.82 | +32% | Mar 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.70 mg/L | 5.60 | +55% | Sep 2017 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.88 mg/L | 2.80 | +74% | Sep 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 110.27 kg/d | 99.88 | +10% | Jun 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 378.17 kg/d | 149.82 | +152% | Jun 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 100.00 mg/L | 45.00 | +122% | Jun 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 165.32 kg/d | 149.82 | +10% | May 2017 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.20 mg/L | 5.60 | +118% | Apr 2017 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.15 mg/L | 2.80 | +191% | Apr 2017 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 8.78 mg/L | 2.80 | +214% | Mar 2017 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 6.61 mg/L | 2.80 | +136% | Feb 2017 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.88 mg/L | 2.80 | +110% | Jan 2017 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 4.86 mg/L | 2.80 | +74% | Nov 2016 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 293.39 kg/d | 149.82 | +96% | Oct 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.26 mg/L | 2.80 | +88% | Sep 2016 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.70 mg/L | 2.80 | +104% | Aug 2016 | Open |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 118.95 kg/d | 105.78 | +12% | Feb 2015 | Resolved |
| Nitrogen, total [as N] | DMR, Limited - Numeric Violation | 106.69 kg/d | 105.78 | +1% | Jan 2015 | Resolved |
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.