CITY OF DILLON WWTF

Address

84 LAGOON LANE
DILLON, MT 59725
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County

BEAVERHEAD County

Industry

Utilities

NAICS (North American Industry Classification)

221320

Inspections

1 · last Feb 15, 2022

Total Penalties

$0

Registry ID

110002063588

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

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 - Failure to Notify	Mar 28, 2012	Jun 8, 2012	Resolved
cwa	Management Practice Violations - Failure to Maintain Records	Mar 28, 2012	Jun 8, 2012	Resolved
cwa	Reporting Violations - Improper/ Incorrect Reporting	Mar 28, 2012	Jun 8, 2012	Resolved
cwa	Monitoring Violations - Improper Analysis or Lab Error	Mar 28, 2012	Jun 8, 2012	Resolved
cwa	Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)	Mar 28, 2012	Jun 8, 2012	Resolved
cwa	Schedule Event reported late	Jan 28, 2012	—	Open
cwa	Schedule Event unachieved and not reported	Jan 28, 2012	Mar 30, 2012	Resolved
cwa	Schedule Event unachieved but reported	Jan 28, 2012	Mar 30, 2012	Resolved
cwa	Schedule Event achieved late but reported	Jan 28, 2012	—	Open
cwa	Schedule Event unachieved and not reported	Jan 28, 2012	Mar 29, 2012	Resolved
cwa	Schedule Event reported late	Jan 28, 2012	—	Open
cwa	Schedule Event achieved late but reported	Jan 28, 2012	—	Open
cwa	Schedule Event unachieved but reported	Jan 28, 2012	Mar 29, 2012	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
Phosphorus, total [as P]	DMR, Limited - Numeric Violation	10.35 kg/d	8.81	+18%	Jun 2024	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	2,000.00 MPN/100mL	1,260.00	+59%	Jan 2024	Open
BOD, carbonaceous [5 day, 20 C]	DMR, Limited - Numeric Violation	42.00 mg/L	40.00	+5%	Jan 2024	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	850.00 MPN/100mL	252.00	+237%	Jul 2023	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	398.00 MPN/100mL	126.00	+216%	Jul 2023	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	2,000.00 MPN/100mL	252.00	+694%	Apr 2023	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	800.00 MPN/100mL	252.00	+217%	Aug 2022	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	1,000.00 MPN/100mL	252.00	+297%	Aug 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	14.10 mg/L	8.50	+66%	Mar 2015	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	14.10 mg/L	11.40	+24%	Mar 2015	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	772.40 MPN/100mL	630.00	+23%	Feb 2015	Open
E. coli, MTEC-MF	DMR, Limited - Numeric Violation	4,000.00 MPN/100mL	1,260.00	+217%	Feb 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 CWA Non Penalty AO

Clean Water Act · Case MT-N00000084 · Oct 31, 1995

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