Clean Water Act

AMHERST WASTEWATER TREATMENT FACILITY

Quick Summary

•Assessed $0 in total penalties since records began.

Address: PO BOX 97
AMHERST, NE 68812
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County: BUFFALO County
Inspections: 2 · last Oct 2, 2025
Total Penalties: $0
Registry ID: 110009840814

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	7.30 kg/d	0.43	+1,598%	May 2021	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	114.50 mg/L	30.00	+282%	May 2021	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	9.35 mg/L	0.31	+2,916%	May 2021	Open
Solids, total suspended	DMR, Limited - Numeric Violation	150.00 mg/L	120.00	+25%	May 2021	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	5.20 kg/d	0.22	+2,264%	May 2021	Open
Solids, total suspended	DMR, Limited - Numeric Violation	135.00 mg/L	80.00	+69%	May 2021	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	160.00 mg/L	45.00	+256%	May 2021	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	13.10 mg/L	0.61	+2,048%	May 2021	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	83.00 mg/L	30.00	+177%	Apr 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	13.30 kg/d	0.43	+2,993%	Apr 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Overdue	13.30 kg/d	0.43	+2,993%	Apr 2020	Resolved
BOD, 5-day, 20 deg. C	DMR, Limited - Overdue	97.00 mg/L	45.00	+116%	Apr 2020	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	8.60 kg/d	0.22	+3,809%	Apr 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	15.45 mg/L	0.31	+4,884%	Apr 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Overdue	23.90 mg/L	0.61	+3,818%	Apr 2020	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	23.90 mg/L	0.61	+3,818%	Apr 2020	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	97.00 mg/L	45.00	+116%	Apr 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	7.40 mg/L	1.01	+633%	Sep 2019	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	4.10 kg/d	0.35	+1,071%	Sep 2019	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	31.50 mg/L	30.00	+5%	Sep 2019	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	7.40 mg/L	0.50	+1,380%	Sep 2019	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	4.10 kg/d	0.71	+477%	Sep 2019	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	1.73 kg/d	0.15	+1,053%	Dec 2018	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	1.73 kg/d	0.30	+477%	Dec 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	3.10 mg/L	0.43	+621%	Dec 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	3.10 mg/L	0.21	+1,376%	Dec 2018	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	4.40 mg/L	0.50	+780%	Aug 2018	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	94.00 mg/L	80.00	+18%	Aug 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	6.40 mg/L	1.01	+534%	Aug 2018	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	46.50 mg/L	45.00	+3%	Aug 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	2.40 kg/d	0.35	+586%	Aug 2018	Resolved
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	46.50 mg/L	30.00	+55%	Aug 2018	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	3.50 kg/d	0.71	+393%	Aug 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	15.10 mg/L	0.61	+2,375%	Mar 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	8.40 kg/d	0.22	+3,718%	Mar 2018	Resolved
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	54.50 mg/L	45.00	+21%	Mar 2018	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	54.50 mg/L	30.00	+82%	Mar 2018	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	8.40 kg/d	0.43	+1,853%	Mar 2018	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	15.10 mg/L	0.31	+4,771%	Mar 2018	Resolved
Solids, total suspended	DMR, Limited - Numeric Violation	115.00 mg/L	80.00	+44%	Dec 2017	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	6.15 mg/L	1.08	+469%	Dec 2017	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	3.40 kg/d	0.76	+347%	Dec 2017	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	3.40 kg/d	1.53	+122%	Dec 2017	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	46.50 mg/L	45.00	+3%	Dec 2017	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	6.15 mg/L	2.17	+183%	Dec 2017	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	46.50 mg/L	30.00	+55%	Dec 2017	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	6.30 kg/d	0.99	+536%	Mar 2017	Open
Solids, total suspended	DMR, Limited - Numeric Violation	93.50 mg/L	80.00	+17%	Mar 2017	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	35.00 mg/L	30.00	+17%	Mar 2017	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	11.30 mg/L	0.70	+1,514%	Mar 2017	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 NE-3002 · Aug 18, 2010

State CWA Non Penalty AO

Clean Water Act · Case NE-2010-1201 · May 12, 2010