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Clean Water Act discharge permit · NPDES CA0077747

CHESTER WWTP, Chester, CA: NPDES CA0077747 discharge permit, effluent exceedances, inspections, penalties

CHESTER WWTP, held by CHESTER PUD, holds NPDES permit CA0077747, which discharges to Lake Almanor. EPA’s file records it issued August 13, 2009 and expiring August 1, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedCHESTER WWTP
Permittee as filedCHESTER PUD
NPDES IDCA0077747
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedAugust 13, 2009
Expiration dateAugust 1, 2014
AddressChester, CA 96020
Receiving waterLAKE ALMANOR
SubwatershedMarian Creek-Frontal Lake Almanor (HUC 180201210404)
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler CAL000476802

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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; the 60 with the most exceedances of 198 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
BOD, 5-day, 20 deg. C5270
Solids, total suspended5270
Flow, in conduit or thru treatment plant4120
pH2120
Specific conductance260
Nitrogen, ammonia total [as N]260
Chlorine, total residual260
Temperature, water deg. fahrenheit130
Nitrogen, nitrite total [as N]130
Nitrogen, nitrate total [as N]130
Hardness, total [as CaCO3]130
Solids, total dissolved130
Coliform, total general130
BOD, 5-day, percent removal130
Solids, suspended percent removal130
Copper, total recoverable220
%Surv Static Renewal 96Hr Oncorhynchus mykiss220
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)220
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia220
TU Static Renewal 7-Day Chronic Pimphales promelas220
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss020
Copper, dissolved [as Cu]110
Zinc, total recoverable110
Aluminum, total recoverable110
Aluminum, dissolved [as Al]110
Zinc, dissolved [as Zn]010
Alkalinity, total [as CaCO3]100
Phosphorus, total [as P]100
Cyanide, total [as CN]100
Sulfite [as SO3]100
Sulfide, total [as S]100
Calcium, total recoverable100
Magnesium, total recoverable100
Sodium, total recoverable100
Potassium, total recoverable100
Chloride [as Cl]100
Sulfate, total [as SO4]100
Asbestos100
Fluoride, total [as F]100
Arsenic, total recoverable100
Iron, total recoverable100
Selenium, total recoverable100
Thallium, total recoverable100
Beryllium, total recoverable [as Be]100
Boron, total recoverable100
Barium, total recoverable100
Chromium, hexavalent [as Cr]100
Iron, dissolved [as Fe]100
Nickel, total recoverable100
Silver total recoverable100
Cadmium, total recoverable100
Lead, total recoverable100
Chromium, total recoverable100
Antimony, total recoverable100
2-Methyl-4,6-dinitrophenol100
Tributyltin100
Diquat100
Manganese, total recoverable100
Methyl tert-butyl ether [MTBE]100
Dinoseb100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES CA0077747.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES CA0077747.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Nearby on the register

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

What this page shows

This public-records page covers the Clean Water Act discharge permit NPDES CA0077747 for CHESTER WWTP in Chester, CA, held by CHESTER PUD, which discharges to Lake Almanor and sits in the Marian Creek-Frontal Lake Almanor subwatershed (HUC 180201210404). The listed figures are a Minor Discharger class, 196 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance, with the permit shown as administratively continued.