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Clean Water Act discharge permit · NPDES CA0078662

DEER CREEK WWTP, El Dorado County, CA: NPDES CA0078662 discharge permit, effluent exceedances, inspections, penalties

DEER CREEK WWTP, held by EL DORADO IRRIGATION DISTRICT, holds NPDES permit CA0078662, which discharges to Deer Creek. EPA’s file records it issued December 4, 2008 and expiring December 1, 2013. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedDEER CREEK WWTP
Permittee as filedEL DORADO IRRIGATION DISTRICT
NPDES IDCA0078662
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedDecember 4, 2008
Expiration dateDecember 1, 2013
AddressEl Dorado County, CA 95682
Receiving waterDEER CREEK
SubwatershedUpper Deer Creek (HUC 180400130502)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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 215 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Dibromochloromethane13121February 28, 2007437% over the limit
Dichlorobromomethane53418August 31, 20061,558% over the limit
Nitrogen, ammonia total [as N]8446December 31, 2013262% over the limit
BOD, 5-day, 20 deg. C12545September 30, 200552% over the limit
Coliform, total general4183May 31, 2019275% over the limit
Chlorine, total residual0153June 30, 2005100% over the limit
Specific conductance2123September 30, 201328% over the limit
Turbidity042April 30, 2005
pH4171July 31, 2014
Mercury, total recoverable4131December 31, 20121,858% over the limit
Zinc, total recoverable1081November 30, 20131% over the limit
Solids, total suspended12490
Trihalomethane, tot.0240
Flow, in conduit or thru treatment plant4170
Nitrogen, nitrate total [as N]2140
Copper, total recoverable1120
Chloroform1120
Hardness, total [as CaCO3]3100
Temperature, water deg. fahrenheit180
BOD, 5-day, percent removal270
Solids, suspended percent removal270
Solids, settleable060
Nitrite + Nitrate total [as N]250
Nitrogen, nitrite total [as N]240
Methylmercury130
Di[2-ethylhexyl] phthalate [DEHP]120
%Surv Static 96Hr Acute Oncorhynchus Mykiss410
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)410
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia410
TU Static Renewal 7-Day Chronic Pimphales promelas410
Solids, total dissolved110
Aluminum, total recoverable300
Radioactivity100
Alkalinity, total [as CaCO3]100
Phosphorus, total [as P]100
Cyanide, total [as CN]100
Sulfite [as SO3]100
Calcium, total [as Ca]100
Magnesium, total recoverable100
Sodium, total [as Na]100
Potassium, total [as K]100
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
Chromium, trivalent [as Cr]100
Nickel, total recoverable100
Silver total recoverable100
Cadmium, total recoverable100
Lead, total recoverable100
Chromium, total recoverable100
Antimony, total recoverable100

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 CA0078662.

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 September 15, 2026.

What this page shows

This public-records page covers NPDES permit CA0078662 for the DEER CREEK WWTP in El Dorado County, CA, held by EL DORADO IRRIGATION DISTRICT and discharging to Deer Creek within the Upper Deer Creek subwatershed (HUC 180400130502). The permit is listed as administratively continued, a Major Discharger class, with 215 pollutants on file, 211 under a numeric limit, 31 with a violation of any kind, and 11 with an effluent exceedance.