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Clean Water Act discharge permit · NPDES CA0037958

NOVATO WWTP, Novato, CA: NPDES CA0037958 discharge permit, effluent exceedances, inspections, penalties

NOVATO WWTP, held by Novato Sanitary District, holds NPDES permit CA0037958, which discharges to San Pablo Bay. EPA’s file records it issued July 8, 2015 and expiring August 31, 2020. 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 filedNOVATO WWTP
Permittee as filedNovato Sanitary District
NPDES IDCA0037958
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
IssuedJuly 8, 2015
Expiration dateAugust 31, 2020
AddressNovato, CA 94945
Receiving waterSan Pablo Bay
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; the 60 with the most exceedances of 175 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Chlorine, total residual04935October 31, 201199,999% over the limit
Enterococci13425April 30, 201099,999% over the limit
Solids, total suspended66219March 31, 2010168% over the limit
Nitrogen, ammonia total [as N]66013January 31, 2010232% over the limit
pH22012October 31, 2017
Solids, suspended percent removal11511February 28, 201083% over the limit
Cyanide, total [as CN]32910December 31, 2006378% over the limit
Coliform, total general01210October 31, 1999567% over the limit
Mercury, total [as Hg]0148May 31, 1998833% over the limit
Copper, total [as Cu]077May 31, 199561% over the limit
BOD, 5-day, percent removal1116October 31, 201164% over the limit
Dieldrin086October 31, 20122,757% over the limit
BOD, 5-day, 20 deg. C6564January 31, 20154,483% over the limit
Copper, total recoverable2174February 28, 2010263% over the limit
Solids, settleable044February 28, 1998600% over the limit
Oil and grease4293April 30, 200560% over the limit
Nickel, total [as Ni]033March 31, 1999105% over the limit
% Survival Static Renewal 96Hr Acute Pimephales promelas291December 31, 200711% over the limit
% Survival Flow Through 96Hr Acute Pimephales promelas231February 28, 201589% over the limit
Silver, total [as Ag]011November 30, 19944% over the limit
Mercury, total recoverable4260
Nickel, total recoverable0170
Lead, total recoverable0170
Flow, in conduit or thru treatment plant4120
Chlorine dose0120
Silver total recoverable090
Zinc, total recoverable090
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia070
Polychlorinated biphenyls [PCBs], sum of Aroclors240
Temperature, water deg. centigrade140
2-Chloroethyl vinyl ether, [mixed]030
Coliform, fecal general220
TCDD equivalents220
TU Static Renewal 7-Day Chronic Menidia beryllina220
Carbon tetrachloride020
1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin110
1,2,3,7,8-Pentachlorodibenzo-p-dioxin110
1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin110
1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin110
1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin110
1,2,3,7,8-Pentachlorodibenzofuran110
2,3,4,7,8-Pentachlorodibenzofuran110
1,2,3,4,7,8-Hexachlorodibenzofuran110
1,2,3,6,7,8-Hexachlorodibenzofuran110
1,2,3,7,8,9-Hexachlorodibenzofuran110
2,3,4,6,7,8-Hexachlorodibenzofuran110
1,2,3,4,6,7,8-Heptachlorodibenzofuran110
1,2,3,4,7,8,9-Heptachlorodibenzofuran110
1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin110
2,3,7,8-Tetrachlorodibenzo-p-dioxin110
2,3,7,8-Tetrachlorodibenzofuran110
1,2,3,4,6,7,8,9-Octachlorodibenzofuran110
Oxygen, dissolved percent saturation010
Ammonia, unionized010
Arsenic, total recoverable010
Selenium, total recoverable010
Thallium, total recoverable010
Beryllium, total recoverable [as Be]010
Chromium, hexavalent [as Cr]010
Chromium, trivalent [as Cr]010

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 CA0037958.

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 NPDES CA0037958 discharge permit for the NOVATO WWTP in Novato, CA, held by Novato Sanitary District, which discharges to San Pablo Bay and is listed as administratively continued. The page lists 175 pollutants on file, 42 under a numeric limit, and 20 with an effluent exceedance.