Velarion Records

Clean Water Act discharge permit · NPDES CA0047953

EL PASO DE ROBLES WWTP, Paso Robles, CA: NPDES CA0047953 discharge permit, effluent exceedances, inspections, penalties

EL PASO DE ROBLES WWTP, held by El Paso de Robles, City of, holds NPDES permit CA0047953, which discharges to Salinas River. EPA’s file records it issued May 5, 2011 and expiring June 25, 2016. 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 filedEL PASO DE ROBLES WWTP
Permittee as filedEl Paso de Robles, City of
NPDES IDCA0047953
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
IssuedMay 5, 2011
Expiration dateJune 25, 2016
AddressPaso Robles, CA 93446
Receiving waterSalinas River
SubwatershedLower Huerhuero Creek (HUC 180600050307)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Sodium, total recoverable27561March 31, 201526% over the limit
Chlorine, total residual27759September 30, 20202,147,483,650% over the limit
BOD, 5-day, 20 deg. C1017845February 28, 20151,168% over the limit
Copper, total recoverable45443June 30, 2026313% over the limit
Coliform, total general43620October 31, 201799,999% over the limit
Selenium, total recoverable43120December 31, 2019225% over the limit
Solids, total suspended1015118December 31, 2018937% over the limit
Chloride [as Cl]23218March 31, 201519% over the limit
Solids, total dissolved22612March 31, 20155% over the limit
Solids, settleable42911May 31, 20171,150% over the limit
Dichlorobromomethane62110September 30, 20182,436% over the limit
Dibromochloromethane6187June 30, 2016900% over the limit
Nitrogen, total [as N]497December 31, 2025170% over the limit
pH4376December 31, 2008
Oxygen, dissolved [DO]2195March 31, 2015100% over the limit
Oil and grease4374August 31, 2007530% over the limit
BOD, 5-day, percent removal2162February 28, 20157% over the limit
Di[2-ethylhexyl] phthalate [DEHP]4132June 30, 20151,789% over the limit
Sulfate, total [as SO4]262February 28, 201812% over the limit
Solids, suspended percent removal2151October 31, 201480% over the limit
Sulfate [as S]0111February 28, 20066% over the limit
TU Static 7Day Chronic Ceriodaphnia dubia011December 31, 20229,900% over the limit
Static 7Day Chronic Pimephales Promelas011December 31, 20229,900% over the limit
Flow, in conduit or thru treatment plant4310
% Survival Static Renewal 96Hr Acute Pimephales promelas0220
Chlorine usage4200
Temperature, water deg. fahrenheit2140
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)4120
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia4100
TU Static Renewal 7-Day Chronic Pimphales promelas4100
Nitrogen, ammonia total [as N]290
Nitrogen, ammonia, tot unionized [as N]290
Nitrogen, nitrite total [as N]290
Nitrogen, nitrate total [as N]290
Bromoform290
Phosphorus, total [as P]070
Cyanide, total recoverable070
Chloroform260
Pass/Fail Static Renewal 96Hr Acute Daphnia Magma240
E. coli040
Bioassay [96 hr.]030
Hardness, total [as CaCO3]220
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas220
Turbidity020
Flow, total020

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 CA0047953.

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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID CA0047953 there.

Nearby on the register

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

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