AVON, CITY OF

Address

PO BOX 207
AVON, SD 57315
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County

BON HOMME County

Industry

Utilities

NAICS (North American Industry Classification)

221320

Inspections

2 · last Jul 8, 2022

Total Penalties

$0

Registry ID

110009791181

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.

3

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	Effluent Violations - Unapproved Bypass	Apr 23, 2001	—	Open
cwa	Permit Violations - Discharge Without a Valid Permit	Mar 31, 1998	—	Open
cwa	Schedule Event unachieved and not reported	Sep 30, 1990	Jul 3, 1991	Resolved
cwa	Schedule Event achieved late but reported	Sep 30, 1990	—	Open
cwa	Schedule Event achieved late but reported	Aug 30, 1990	—	Open
cwa	Schedule Event unachieved and not reported	Aug 30, 1990	Jul 3, 1991	Resolved
cwa	Schedule Event unachieved and not reported	Aug 30, 1990	Jul 3, 1991	Resolved
cwa	Schedule Event achieved late but reported	Aug 30, 1990	—	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
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	18.40 mg/L	4.80	+283%	Apr 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	18.40 mg/L	8.50	+116%	Apr 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	8.40 mg/L	4.80	+75%	Apr 2022	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	9.28 mg/L	8.50	+9%	Apr 2022	Open
Solids, total suspended	DMR, Limited - Numeric Violation	92.70 mg/L	90.00	+3%	Sep 2021	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	34.00 mg/L	30.00	+13%	Oct 2019	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Overdue	34.00 mg/L	30.00	+13%	Oct 2019	Resolved
E. coli, colony forming units [CFU]	DMR, Limited - Numeric Violation	1,990.00 MPN/100mL	1,178.00	+69%	Sep 2019	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	7.23 mg/L	4.80	+51%	Mar 2019	Open
E. coli, colony forming units [CFU]	DMR, Limited - Numeric Violation	1,730.00 MPN/100mL	1,178.00	+47%	Aug 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	12.40 mg/L	8.50	+46%	Mar 2017	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	12.10 mg/L	4.80	+152%	Mar 2017	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	7.20 mg/L	4.80	+50%	Feb 2016	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	8.94 mg/L	8.50	+5%	Feb 2016	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	5.84 mg/L	4.80	+22%	Apr 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.

CWA 309A AO For Compliance

Clean Water Act · Case 08-1990-N008 · Aug 14, 1990

CWA 309G2B AO For Class II Penalties

Clean Water Act · Case 08-1988-N020 · Feb 7, 1989

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