Clean Water Act discharge permit · NPDES CA0000437

LYTTON WASTEWATER TREATMENT PLANT AND COLLECTION SYSTEM, Windsor, CA: NPDES CA0000437 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
149Pollutants under a numeric limit
0Pollutants with an effluent exceedance

LYTTON WASTEWATER TREATMENT PLANT AND COLLECTION SYSTEM, held by Lytton Rancheria of California, holds NPDES permit CA0000437, which discharges to Gumview Creek. EPA’s file records it issued December 19, 2023 and expiring January 31, 2029. 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.

What the register holds for LYTTON WASTEWATER TREATMENT PLANT AND COLLECTION SYSTEM: its NPDES ID, its permit type and status, its dates, its address in Windsor, California, its receiving water, and 149 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CA0000437.

Identity

Facility as filed	LYTTON WASTEWATER TREATMENT PLANT AND COLLECTION SYSTEM
Permittee as filed	Lytton Rancheria of California
NPDES ID	CA0000437
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 19, 2023
Expiration date	January 31, 2029
Address	Windsor, CA 95492
Receiving water	Gumview Creek
Receiving water impaired	303(D) Listed
Subwatershed	Windsor Creek (HUC 180101100705)

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

Effluent limits and exceedances

149Pollutants on file
149Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

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 149 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	24	0	0
Solids, total suspended	24	0	0
Flow, in conduit or thru treatment plant	12	0	0
Temperature, water deg. centigrade	8	0	0
Phosphorus, total [as P]	8	0	0
Nitrogen, ammonia total [as N]	6	0	0
Coliform, total general	6	0	0
Chronic Mthd Sublethal Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia	6	0	0
Chronic Mthd Sublethal Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, StatR7d P promelas	6	0	0
Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitata	6	0	0
pH	4	0	0
Nitrogen, total [as N]	4	0	0
Nitrite + Nitrate total [as N]	4	0	0
Chlorine, total residual	4	0	0
BOD, 5-day, percent removal	4	0	0
Solids, suspended percent removal	4	0	0
Turbidity	2	0	0
Specific conductance	2	0	0
Solids, settleable	2	0	0
Cyanide, total [as CN]	2	0	0
Hardness, total [as CaCO3]	2	0	0
Arsenic, total recoverable	2	0	0
Selenium, total recoverable	2	0	0
Thallium, total recoverable	2	0	0
Beryllium, total recoverable [as Be]	2	0	0
Chromium, hexavalent [as Cr]	2	0	0
Chromium, trivalent [as Cr]	2	0	0
Nickel, total recoverable	2	0	0
Silver total recoverable	2	0	0
Zinc, total recoverable	2	0	0
Aluminum, total recoverable	2	0	0
Cadmium, total recoverable	2	0	0
Lead, total recoverable	2	0	0
Copper, total recoverable	2	0	0
Antimony, total recoverable	2	0	0
2-Methyl-4,6-dinitrophenol	2	0	0
Dichlorobromomethane	2	0	0
Carbon tetrachloride	2	0	0
1,2-Dichloroethane	2	0	0
Bromoform	2	0	0
Dibromochloromethane	2	0	0
Chloroform	2	0	0
Toluene	2	0	0
Benzene	2	0	0
.delta.-BHC	2	0	0
Acenaphthylene	2	0	0
Acenaphthene	2	0	0
Acrolein	2	0	0
Acrylonitrile	2	0	0
Anthracene	2	0	0
Benzo[b]fluoranthene	2	0	0
Benzo[k]fluoranthene	2	0	0
Benzo[a]pyrene	2	0	0
Bis[2-chloroethyl] ether	2	0	0
Bis[2-chloroethoxy]methane	2	0	0
Bis[2-chloroisopropyl] ether	2	0	0
Butyl benzyl phthalate	2	0	0
Chlorobenzene	2	0	0
Chrysene	2	0	0
Diethyl phthalate	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES CA0000437.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES CA0000437.

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 CA0000437 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.