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NPDES NE0021601 · Clean Water Act

GUIDE ROCK WASTEWATER TREATMENT FACILITY, Guide Rock, NE: NPDES NE0021601 discharge permit, effluent exceedances, inspections, penalties

GUIDE ROCK WASTEWATER TREATMENT FACILITY, Guide Rock, Nebraska: Individual permit NE0021601, held by Guide Rock WWTF; Publicly owned treatment works; Administratively continued; issued March 9, 2020, term to March 31, 2025; discharges to Republican River.

2 of the 20 pollutants listed for NPDES NE0021601 have no violation or effluent exceedance.

  • Nitrogen, ammonia total [as N]: 12 limits, 54 violations of any kind, 6 effluent exceedances, latest July 31, 2019, largest 133% over the limit.
  • BOD, 5-day, 20 deg. C: 5 limits, 48 violations of any kind.
  • Solids, total suspended: 5 limits, 48 violations of any kind.
  • pH: 3 limits, 24 violations of any kind.
  • Flow, in conduit or thru treatment plant: 3 limits, 24 violations of any kind.
  • E. coli: 0 limits, 16 violations of any kind.
  • Flow, total: 1 limit, 14 violations of any kind.
  • Duration of discharge: 1 limit, 12 violations of any kind.
  • E. coli, MTEC-MF: 2 limits, 4 violations of any kind.
  • Phosphorus, total [as P]: 2 limits, 2 violations of any kind.
  • Cadmium, dissolved [as Cd]: 0 limits, 2 violations of any kind.
  • Chromium, dissolved [as Cr]: 0 limits, 2 violations of any kind.
  • Copper, dissolved [as Cu]: 0 limits, 2 violations of any kind.
  • Lead, dissolved [as Pb]: 0 limits, 2 violations of any kind.
  • Nickel, dissolved [as Ni]: 0 limits, 2 violations of any kind.
  • Zinc, dissolved [as Zn]: 0 limits, 2 violations of any kind.
  • Toxicity [acute], Ceriodaphnia dubia: 0 limits, 2 violations of any kind.
  • Toxicity [acute], Pimephales promelas [Fathead Minnow]: 0 limits, 2 violations of any kind.
  • Temperature, water deg. fahrenheit: 2 limits.
  • Nitrogen, total [as N]: 2 limits.
  • March 12, 2026: Evaluation (S).

Nebraska holds 254 Publicly owned treatment works coverages of this permit type in EPA’s file; 190 were issued before NE0021601.

Coverages issued nearest NE0021601

GUIDE ROCK WASTEWATER TREATMENT FACILITY among its neighbors

1 discharge permits are in the Rankin Creek-Republican River subwatershed (HUC 102500160604); NE0021601 is one. Its county: 2, 0 major; NE0021601 is minor permit.

Identity

FacilityGUIDE ROCK WASTEWATER TREATMENT FACILITY
PermitteeGuide Rock WWTF
NPDES IDNE0021601
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMarch 9, 2020
ExpiresMarch 31, 2025
AddressGuide Rock, NE 68955
Receiving waterRepublican River
SubwatershedRankin Creek-Republican River (HUC 102500160604)
SIC4952 – Sewerage Systems

NPDES NE0021601: effluent limits and exceedances

GUIDE ROCK WASTEWATER TREATMENT FACILITY (NPDES NE0021601): 20 pollutants on file, 11 limited; 18 with a violation of any kind, 1 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Nitrogen, ammonia total [as N]12546July 31, 2019133% over the limit
BOD, 5-day, 20 deg. C5480
Solids, total suspended5480
pH3240
Flow, in conduit or thru treatment plant3240
E. coli0160
Flow, total1140
Duration of discharge1120
E. coli, MTEC-MF240
Phosphorus, total [as P]220
Cadmium, dissolved [as Cd]020
Chromium, dissolved [as Cr]020
Copper, dissolved [as Cu]020
Lead, dissolved [as Pb]020
Nickel, dissolved [as Ni]020
Zinc, dissolved [as Zn]020
Toxicity [acute], Ceriodaphnia dubia020
Toxicity [acute], Pimephales promelas [Fathead Minnow]020
Temperature, water deg. fahrenheit200
Nitrogen, total [as N]200

NPDES NE0021601: inspections, violations and enforcement

NPDES NE0021601: 1 inspection

DateWhat EPA recordedAgency
March 12, 2026EvaluationS

NPDES NE0021601 (GUIDE ROCK WASTEWATER TREATMENT FACILITY): no single-event violation, formal enforcement action and informal enforcement action on file.

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Permits near NPDES NE0021601

NPDES NE0021601: 20 pollutant rows, 1 dated events; ICIS-NPDES download, loaded October 14, 2026.