Non-Compliance
Clean Water Act
CITY OF GREAT FALLS WWTP
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
-
1600 6TH STREET NE
GREAT FALLS, MT 59404
View on map ↗ - County
- CASCADE County
- Inspections
- 3 · last Sep 17, 2025
- Total Penalties
- $0 · last Apr 28, 2014
- Registry ID
- 110064645460
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.
1
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 | PR: Failure to issue/reissue control mechanisms to at least 90% of SIU/CIUs w/in 6 months (Level II) | Dec 31, 2024 | — | Open |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Apr 9, 2024 | Jun 5, 2024 | Resolved |
| cwa | Monitoring Violations - Frequency of Sampling Violation | Apr 9, 2024 | Jun 5, 2024 | Resolved |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Apr 9, 2024 | Jun 5, 2024 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 28, 2024 | — | Open |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Feb 15, 2022 | May 23, 2022 | Resolved |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Feb 15, 2022 | May 23, 2022 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Feb 15, 2022 | May 23, 2022 | Resolved |
| cwa | Schedule Event achieved late but reported | Feb 11, 2022 | — | Open |
| cwa | Schedule Event unachieved but reported | Feb 11, 2022 | Mar 24, 2022 | Resolved |
| cwa | Schedule Event unachieved and not reported | Feb 11, 2022 | Mar 24, 2022 | Resolved |
| cwa | Schedule Event reported late | Feb 11, 2022 | — | Open |
| cwa | Schedule Event reported late | Feb 11, 2021 | — | Open |
| cwa | Schedule Event achieved late but reported | Feb 11, 2021 | — | Open |
| cwa | Schedule Event unachieved and not reported | Feb 11, 2020 | Mar 24, 2020 | Resolved |
| cwa | Schedule Event achieved late but reported | Feb 11, 2020 | — | Open |
| cwa | Schedule Event reported late | Feb 11, 2020 | — | Open |
| cwa | Schedule Event unachieved but reported | Feb 11, 2020 | Mar 24, 2020 | Resolved |
| cwa | Schedule Event reported late | May 28, 2019 | — | Open |
| cwa | Schedule Event unachieved but reported | May 28, 2019 | Aug 27, 2019 | Resolved |
| cwa | Schedule Event unachieved and not reported | May 28, 2019 | Aug 27, 2019 | Resolved |
| cwa | Schedule Event achieved late but reported | May 28, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Apr 28, 2019 | — | Open |
| cwa | Schedule Event unachieved and not reported | Apr 28, 2019 | Jul 28, 2019 | Resolved |
| cwa | Schedule Event unachieved but reported | Apr 28, 2019 | Jul 28, 2019 | Resolved |
| cwa | Schedule Event reported late | Apr 28, 2019 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2016 | — | Open |
| cwa | WW SSO - Narrative effluent violation | Mar 10, 2014 | Mar 11, 2014 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Feb 11, 2014 | Feb 18, 2014 | Resolved |
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jan 14, 2014 | Mar 11, 2014 | Resolved |
| cwa | Monitoring Violations - Improper Analysis or Lab Error | Jan 14, 2014 | Mar 11, 2014 | Resolved |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | Aug 21, 2013 | Aug 23, 2013 | Resolved |
| cwa | Permit Violations - Unapproved Operation | Jul 15, 2012 | Sep 11, 2012 | Resolved |
| cwa | Schedule Event reported late | Jul 2, 2012 | — | Open |
| cwa | Schedule Event achieved late but reported | Jul 2, 2012 | — | Open |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | May 10, 2012 | May 25, 2012 | Resolved |
| cwa | Management Practice Violations - Failure to Maintain Records | Nov 23, 2011 | Dec 27, 2011 | Resolved |
| cwa | WW SSO - Discharge to Waters | Sep 11, 2009 | — | Open |
| cwa | WW SSO - Related Unapproved Bypass | Jul 26, 2009 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2008 | — | Open |
| cwa | WW SSO - Overflow to Dry Land or Building Backup | May 20, 2006 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2006 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2005 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Sep 7, 2004 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2001 | — | Open |
| cwa | Schedule Event achieved late but reported | Mar 28, 2000 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Nov 30, 1988 | Dec 31, 1989 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Jul 27, 1987 | Sep 30, 1989 | Resolved |
| cwa | Pretreatment - Failure to Issue SIU Permits | Jul 27, 1987 | Dec 31, 1989 | 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 | 8.80 mg/L | 4.50 | +96% | Dec 2018 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 5.60 mg/L | 4.50 | +24% | Jun 2018 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +6% | Apr 2018 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +20% | Apr 2018 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +38% | Mar 2018 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +61% | Mar 2018 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +24% | Feb 2018 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +6% | Feb 2018 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +31% | Jan 2018 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +13% | Jan 2018 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +63% | Dec 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +90% | Dec 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +25% | May 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +46% | May 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +13% | Apr 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +24% | Apr 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +141% | Mar 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +106% | Mar 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +72% | Feb 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +63% | Feb 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +57% | Jan 2017 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +56% | Jan 2017 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +17% | Aug 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +13% | Jul 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +31% | Jul 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +39% | Jun 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +19% | Jun 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +75% | May 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +50% | May 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +81% | Apr 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +112% | Apr 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.02 | +94% | Mar 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.03 mg/L | 0.01 | +90% | Mar 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +19% | Feb 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +36% | Feb 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.01 | +11% | Jan 2016 | Resolved |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.02 | +13% | Jan 2016 | Open |
| Arsenic, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.01 | +7% | Dec 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.
CWA 309G2B AO For Class II Penalties
Clean Water Act
· Case 08-2001-N003
Judicial
· Case 08-2008-0232 · Apr 14, 2014
$645,000
State CWA Penalty AO
Clean Water Act
· Case MT-FID1890 · Mar 5, 2014
$60,000
CWA 309A AO For Compliance
Clean Water Act
· Case 08-2006-N002 · Mar 29, 2006
CWA 309A AO For Compliance
Clean Water Act
· Case 08-2006-N001 · Nov 22, 2005
CWA 309A AO For Compliance
Clean Water Act
· Case 08-2001-N002 · Dec 27, 2000
CWA 309G2B AO For Class II Penalties
Clean Water Act
· Case 08-1989-N002 · Feb 10, 1989
CWA 309A AO For Compliance
Clean Water Act
· Case 08-1989-N003 · Dec 27, 1988
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