Clean Water Act discharge permit · NPDES NE0021148

FALLS CITY WASTEWATER TREATMENT FACILITY, Falls City, NE: NPDES NE0021148 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
20Pollutants under a numeric limit
4Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

FALLS CITY WASTEWATER TREATMENT FACILITY, held by FALLS CITY WWTF, holds NPDES permit NE0021148, which discharges to Big Nemaha River. EPA’s file records it issued March 30, 2021 and expiring March 31, 2026.

FALLS CITY WASTEWATER TREATMENT FACILITY, Falls City, Nebraska: Individual permit NE0021148, held by FALLS CITY WWTF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 30, 2021, term to March 31, 2026; discharges to BIG NEMAHA RIVER.

BOD, 5-day, 20 deg. C: 0 limits, 36 violations of any kind, 36 effluent exceedances, latest March 31, 2000, largest 69% over the limit.
Nitrogen, ammonia total [as N]: 12 limits, 26 violations of any kind, 22 effluent exceedances, latest September 30, 2025, largest 419% over the limit.
Solids, total suspended: 5 limits, 17 violations of any kind, 13 effluent exceedances, latest May 31, 2019, largest 3,277% over the limit.
pH: 3 limits, 7 violations of any kind, 1 effluent exceedance, latest April 30, 2014.
BOD, carbonaceous [5 day, 20 C]: 5 limits, 4 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
Selenium, sludge solid: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Arsenic, sludge tot. dry wt [as As]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Nitrogen [as NO3] sludge solid: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Zinc, sludge, total, dry weight [as Zn]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Lead, sludge, total, dry weight [as Pb]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Nickel, sludge, total, dry weight [as Ni]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Nitrogen, sludge, total, dry weight [as N]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Mercury, sludge, total, dry weight [as Hg]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Chromium, sludge, total, dry weight [as Cr]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Copper, sludge, total, dry weight [as Cu]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Cadmium, sludge, total, dry weight [as Cd]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Solids, sludge, total, dry weight: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia, sludge, tot dry wgt: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 3 limits, 2 violations of any kind, 0 effluent exceedances.
Temperature, water deg. fahrenheit: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Atrazine: 2 limits, 2 violations of any kind, 0 effluent exceedances.
E. coli, MTEC-MF: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Cadmium, dissolved [as Cd]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Chromium, dissolved [as Cr]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Copper, dissolved [as Cu]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Iron, dissolved [as Fe]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Lead, dissolved [as Pb]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Nickel, dissolved [as Ni]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Zinc, dissolved [as Zn]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Selenium, dissolved [as Se]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Toxicity [acute], Ceriodaphnia dubia: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Toxicity [acute], Pimephales promelas [Fathead Minnow]: 1 limit, 0 violations of any kind, 0 effluent exceedances.

October 1, 2026: Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment (ST6).
September 30, 2026: Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment (ST6).
June 5, 2026: Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment (ST6).
July 24, 2025: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
June 30, 2025: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
June 29, 2025: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
October 17, 2024: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
June 19, 2024: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
May 30, 2024: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (ST6).
May 18, 2022: Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment (ST6).
May 16, 2022: WW SSO - Overflow to Dry Land or Building Backup (ST6).
February 25, 2022: Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment (ST6).
June 24, 2021: Wet-weather unanticipated bypass to waters of the U.S., not permit compliant, no endangerment (ST6).

Nebraska holds 254 Publicly owned treatment works coverages of this permit type in EPA’s file; 225 were issued before NE0021148. FALLS CITY WWTF holds 2 permits in Nebraska.

Other permits held by FALLS CITY WWTF

FALLS CITY WWTF, Falls City: NEL021148, issued January 1, 2021

Coverages issued nearest NE0021148

March 16, 2021: FAIRBURY WASTEWATER TREATMENT FACILITY, Fairbury, NE0024384, held by FAIRBURY WWTF
March 18, 2021: STELLA WASTEWATER TREATMENT FACILITY, Stella, NE0045314, held by STELLA WWTF
March 26, 2021: LOUISVILLE WASTEWATER TREATMENT FACILITY, Louisville, NE0024228, held by LOUISVILLE WWTF
March 29, 2021: BROKEN BOW WASTEWATER TREATMENT FACILITY, Broken Bow, NE0027260, held by BROKEN BOW WWTF
March 29, 2021: PANAMA WASTEWATER TREATMENT FACILITY, Panama, NE0046256, held by PANAMA WWTF
March 30, 2021: DEWITT WASTEWATER TREATMENT FACILITY, De Witt, NE0024341, held by DEWITT WWTF
March 30, 2021: ALBION WWTF, Albion, NE0026573
March 30, 2021: WACO WASTEWATER TREATMENT FACILITY, Waco, NE0045004, held by WACO WWTF
May 28, 2021: SYRACUSE WASTEWATER TREATMENT FACILITY, Syracuse, NE0040282, held by SYRACUSE WWTF
June 17, 2021: BEAVER CROSSING WASTEWATER, Beaver Crossing, NE0023981, held by BEAVER CROSSING WWTF

FALLS CITY WASTEWATER TREATMENT FACILITY among its neighbors

EPA’s permit file holds 3 discharge permits in the Wildcat Creek-Big Nemaha River subwatershed (HUC 102400080403), NE0021148 among them. Its county holds 9, 1 of them major permits; NE0021148 is a major permit.

Other permits in the Wildcat Creek-Big Nemaha River subwatershed (HUC 102400080403)

4W OIL CO., LLC, Falls City: NE0130656, minor permit, discharging to BIG NEMAHA RIVER, permit term to December 31, 2021
GORE OIL CO - REESMAN A, Falls City: NE0114090, minor permit, discharging to TRIB OF NEMAHA, permit term to March 31, 2022

Identity

Facility as filed	FALLS CITY WASTEWATER TREATMENT FACILITY
Permittee as filed	FALLS CITY WWTF
NPDES ID	NE0021148
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	March 30, 2021
Expiration date	March 31, 2026
Address	Falls City, NE 68355
Receiving water	BIG NEMAHA RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Wildcat Creek-Big Nemaha River (HUC 102400080403)
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

35Pollutants on file
20Under a numeric limit
24With a violation of any kind
4With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	0	36	36	March 31, 2000	69% over the limit
Nitrogen, ammonia total [as N]	12	26	22	September 30, 2025	419% over the limit
Solids, total suspended	5	17	13	May 31, 2019	3,277% over the limit
pH	3	7	1	April 30, 2014
BOD, carbonaceous [5 day, 20 C]	5	4	0
Nitrogen, total [as N]	2	4	0
Phosphorus, total [as P]	2	4	0
Selenium, sludge solid	0	4	0
Arsenic, sludge tot. dry wt [as As]	0	4	0
Nitrogen [as NO3] sludge solid	0	4	0
Molybdenum, sludge, total, dry weight [as Mo]	0	4	0
Zinc, sludge, total, dry weight [as Zn]	0	4	0
Lead, sludge, total, dry weight [as Pb]	0	4	0
Nickel, sludge, total, dry weight [as Ni]	0	4	0
Nitrogen, sludge, total, dry weight [as N]	0	4	0
Mercury, sludge, total, dry weight [as Hg]	0	4	0
Chromium, sludge, total, dry weight [as Cr]	0	4	0
Copper, sludge, total, dry weight [as Cu]	0	4	0
Cadmium, sludge, total, dry weight [as Cd]	0	4	0
Solids, sludge, total, dry weight	0	4	0
Nitrogen, ammonia, sludge, tot dry wgt	0	4	0
Flow, in conduit or thru treatment plant	3	2	0
Temperature, water deg. fahrenheit	2	2	0
Atrazine	2	2	0
E. coli, MTEC-MF	2	0	0
Cadmium, dissolved [as Cd]	1	0	0
Chromium, dissolved [as Cr]	1	0	0
Copper, dissolved [as Cu]	1	0	0
Iron, dissolved [as Fe]	1	0	0
Lead, dissolved [as Pb]	1	0	0
Nickel, dissolved [as Ni]	1	0	0
Zinc, dissolved [as Zn]	1	0	0
Selenium, dissolved [as Se]	1	0	0
Toxicity [acute], Ceriodaphnia dubia	1	0	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	0	0

Inspections, violations and enforcement

13Single-event violations

Date	What EPA recorded	Agency
October 1, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
September 30, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 5, 2026	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
July 24, 2025	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
June 30, 2025	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
June 29, 2025	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
October 17, 2024	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
June 19, 2024	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
May 30, 2024	Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
May 18, 2022	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
May 16, 2022	WW SSO - Overflow to Dry Land or Building Backup	ST6
February 25, 2022	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
June 24, 2021	Wet-weather unanticipated bypass to waters of the U.S., not permit compliant, no endangerment	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES NE0021148.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES NE0021148.

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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers the Falls City Wastewater Treatment Facility's NPDES permit NE0021148, a major discharger that is administratively continued, with the permit issued March 30, 2021 and expiring March 31, 2026. The page lists 20 discharger class items, 4 pollutants under a numeric limit, and 4 pollutants with an effluent exceedance, with the receiving water Big Nemaha River in the Wildcat Creek-Big Nemaha River subwatershed (HUC 102400080403).