Windsor Water District

NPDES permit CA0023345 · Major POTW · expired, expires 2025-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-09-30 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
6of 32 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 31 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (315)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Radium 226 + radium 228, totalDAILY MX report only all year
001Strontium 90, totalDAILY MX report only all year
001Uranium, total [in pci/L]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001E. coliDAILY MX report only all year
001Beta/photon emittersTOTAL report only all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total generalMW <= 240 MPN/100mL all year
001Alpha gross radioactivityDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Tritium, totalDAILY MX report only all year
002Temperature, water deg. fahrenheitINST MAX report only all year
002Oxygen, dissolved [DO]INST MIN report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Nitrogen, total [as N]MO AVG <= 10.5 mg/L all year
002Nitrogen, organic total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrogen, ammonia, tot unionized [as N]DAILY MX report only all year
002Nitrogen, nitrite total [as N]DAILY MX report only all year
002Nitrogen, nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Cyanide, total [as CN]MO AVG <= 4.3 ug/L all year
002Cyanide, total [as CN]DAILY MX report only all year
002Cyanide, total [as CN]DAILY MX <= 8.5 ug/L all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Arsenic, total recoverableDAILY MX report only all year
002Selenium, total recoverableDAILY MX report only all year
002Thallium, total recoverableDAILY MX report only all year
002Beryllium, total recoverable [as Be]DAILY MX report only all year
002Chromium, hexavalent [as Cr]DAILY MX report only all year
002Chromium, trivalent [as Cr]DAILY MX report only all year
002Nickel, total recoverableDAILY MX report only all year
002Silver total recoverableDAILY MX report only all year
002Zinc, total recoverableDAILY MX report only all year
002Cadmium, total recoverableDAILY MX report only all year
002Lead, total recoverableMO AVG report only all year
002Lead, total recoverableMO AVG <= 1 Ratio all year
002Lead, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX <= 1 Ratio all year
002Copper, total recoverableDAILY MX report only all year
002Antimony, total recoverableDAILY MX report only all year
0022-Methyl-4,6-dinitrophenolDAILY MX report only all year
002DichlorobromomethaneDAILY MX report only all year
002Carbon tetrachlorideDAILY MX report only all year
0021,2-DichloroethaneDAILY MX report only all year
002BromoformDAILY MX report only all year
002DibromochloromethaneDAILY MX report only all year
002ChloroformDAILY MX report only all year
002TolueneDAILY MX report only all year
002BenzeneDAILY MX report only all year
002.delta.-BHCDAILY MX report only all year
002AcenaphthyleneDAILY MX report only all year
002AcenaphtheneDAILY MX report only all year
002AcroleinDAILY MX report only all year
002AcrylonitrileDAILY MX report only all year
002AnthraceneDAILY MX report only all year
002Benzo[b]fluorantheneDAILY MX report only all year
002Benzo[k]fluorantheneDAILY MX report only all year
002Benzo[a]pyreneDAILY MX report only all year
002Bis[2-chloroethyl] etherDAILY MX report only all year
002Bis[2-chloroethoxy]methaneDAILY MX report only all year
002Bis[2-chloroisopropyl] etherDAILY MX report only all year
002Butyl benzyl phthalateDAILY MX report only all year
002ChlorobenzeneDAILY MX report only all year
002ChryseneDAILY MX report only all year
002Diethyl phthalateDAILY MX report only all year
002Dimethyl phthalateDAILY MX report only all year
0021,2-DiphenylhydrazineDAILY MX report only all year
002Endosulfan sulfateDAILY MX report only all year
002.beta.-EndosulfanDAILY MX report only all year
002.alpha.-EndosulfanDAILY MX report only all year
002Endrin aldehydeDAILY MX report only all year
002EthylbenzeneDAILY MX report only all year
002FluorantheneDAILY MX report only all year
002FluoreneDAILY MX report only all year
002HexachlorocyclopentadieneDAILY MX report only all year
002HexachlorobutadieneDAILY MX report only all year
002HexachloroethaneDAILY MX report only all year
002Indeno[1,2,3-cd]pyreneDAILY MX report only all year
002IsophoroneDAILY MX report only all year
002Methyl bromide [Bromomethane]DAILY MX report only all year
002Methyl chloride [Chloromethane]DAILY MX report only all year
002Methylene chlorideDAILY MX report only all year
002N-Nitrosodi-N-propylamineDAILY MX report only all year
002N-NitrosodiphenylamineDAILY MX report only all year
002N-Nitrosodimethylamine [NDMA]DAILY MX report only all year
002NitrobenzeneDAILY MX report only all year
002PhenanthreneDAILY MX report only all year
002PyreneDAILY MX report only all year
002TetrachloroethyleneDAILY MX report only all year
0021,1-DichloroethaneDAILY MX report only all year
0021,1-DichloroethyleneDAILY MX report only all year
0021,1,1-TrichloroethaneDAILY MX report only all year
0021,1,2-TrichloroethaneDAILY MX report only all year
0021,1,2,2-TetrachloroethaneDAILY MX report only all year
002Benzo[ghi]peryleneDAILY MX report only all year
002Benzo[a]anthraceneDAILY MX report only all year
0021,2-DichlorobenzeneDAILY MX report only all year
0021,2-DichloropropaneDAILY MX report only all year
002trans-1,2-DichloroethyleneDAILY MX report only all year
0021,2,4-TrichlorobenzeneDAILY MX report only all year
002Dibenz[a,h]anthraceneDAILY MX report only all year
0021,3-DichlorobenzeneDAILY MX report only all year
0021,4-DichlorobenzeneDAILY MX report only all year
0022-Chloroethyl vinyl ether, [mixed]DAILY MX report only all year
0022-ChloronaphthaleneDAILY MX report only all year
0022-ChlorophenolDAILY MX report only all year
0022-NitrophenolDAILY MX report only all year
002Di-n-octyl phthalateDAILY MX report only all year
0022,4-DichlorophenolDAILY MX report only all year
0022,4-DimethylphenolDAILY MX report only all year
0022,4-DinitrotolueneDAILY MX report only all year
0022,4-DinitrophenolDAILY MX report only all year
0022,4,6-TrichlorophenolDAILY MX report only all year
0022,6-DinitrotolueneDAILY MX report only all year
0023,3'-DichlorobenzidineDAILY MX report only all year
0024-Bromophenyl phenyl etherDAILY MX report only all year
0024-Chlorophenyl phenyl etherDAILY MX report only all year
0024-NitrophenolDAILY MX report only all year
002PCB-1016DAILY MX report only all year
0022,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
002PhenolDAILY MX report only all year
002NaphthaleneDAILY MX report only all year
002PentachlorophenolDAILY MX report only all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
002Di-n-butyl phthalateDAILY MX report only all year
002BenzidineDAILY MX report only all year
002Vinyl chlorideDAILY MX report only all year
002TrichloroethyleneDAILY MX report only all year
0024,4'-DDTDAILY MX report only all year
0024,4'-DDDDAILY MX report only all year
0024,4'-DDEDAILY MX report only all year
002AldrinDAILY MX report only all year
002.alpha.-BHCDAILY MX report only all year
002.beta.-BHCDAILY MX report only all year
002.gamma.-BHCDAILY MX report only all year
002Chlordane [tech mix. and metabolites]DAILY MX report only all year
002DieldrinDAILY MX report only all year
002EndrinDAILY MX report only all year
002ToxapheneDAILY MX report only all year
002HeptachlorDAILY MX report only all year
002Heptachlor epoxideDAILY MX report only all year
002PCB-1221DAILY MX report only all year
002PCB-1232DAILY MX report only all year
002PCB-1242DAILY MX report only all year
002PCB-1248DAILY MX report only all year
002PCB-1254DAILY MX report only all year
002PCB-1260DAILY MX report only all year
002HexachlorobenzeneDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002E. coliDAILY MX report only all year
0024-Chloro-3-methylphenolDAILY MX report only all year
002Mercury, total recoverableDAILY MX report only all year
002Mercury, total recoverableDAILY MX report only all year
0021,3-DichloropropeneDAILY MX report only all year
002Dilution factorDAILY MX report only all year
002ChloroethaneDAILY MX report only all year
00296Hr Acute Ceriodaphn. Dubia % SrvMINIMUM >= 70 % survival all year
00296Hr Acute Ceriodaphn. Dubia % SrvBA >= 90 % survival all year
002%Surv Static Renewal 96Hr Oncorhynchus mykissMINIMUM >= 70 % survival all year
002%Surv Static Renewal 96Hr Oncorhynchus mykissBA >= 90 % survival all year
002Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr C dubiaVALUE report only all year
002Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr C dubiaMAXIMUM report only all year
002Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissVALUE report only all year
002Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissMAXIMUM report only all year
002Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasVALUE report only all year
002Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasMAXIMUM report only all year
002Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaVALUE report only all year
002Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMAXIMUM report only all year
002Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataVALUE report only all year
002Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataMAXIMUM report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedDAILY MX report only all year
INFCyanide, total [as CN]DAILY MX report only all year
INFArsenic, total recoverableDAILY MX report only all year
INFSelenium, total recoverableDAILY MX report only all year
INFThallium, total recoverableDAILY MX report only all year
INFBeryllium, total recoverable [as Be]DAILY MX report only all year
INFChromium, hexavalent [as Cr]DAILY MX report only all year
INFChromium, trivalent [as Cr]DAILY MX report only all year
INFNickel, total recoverableDAILY MX report only all year
INFSilver total recoverableDAILY MX report only all year
INFZinc, total recoverableDAILY MX report only all year
INFCadmium, total recoverableDAILY MX report only all year
INFLead, total recoverableDAILY MX report only all year
INFCopper, total recoverableDAILY MX report only all year
INFAntimony, total recoverableDAILY MX report only all year
INF2-Methyl-4,6-dinitrophenolDAILY MX report only all year
INFDichlorobromomethaneDAILY MX report only all year
INFCarbon tetrachlorideDAILY MX report only all year
INF1,2-DichloroethaneDAILY MX report only all year
INFBromoformDAILY MX report only all year
INFDibromochloromethaneDAILY MX report only all year
INFChloroformDAILY MX report only all year
INFTolueneDAILY MX report only all year
INFBenzeneDAILY MX report only all year
INF.delta.-BHCDAILY MX report only all year
INFAcenaphthyleneDAILY MX report only all year
INFAcenaphtheneDAILY MX report only all year
INFAcroleinDAILY MX report only all year
INFAcrylonitrileDAILY MX report only all year
INFAnthraceneDAILY MX report only all year
INFBenzo[b]fluorantheneDAILY MX report only all year
INFBenzo[k]fluorantheneDAILY MX report only all year
INFBenzo[a]pyreneDAILY MX report only all year
INFBis[2-chloroethyl] etherDAILY MX report only all year
INFBis[2-chloroethoxy]methaneDAILY MX report only all year
INFBis[2-chloroisopropyl] etherDAILY MX report only all year
INFButyl benzyl phthalateDAILY MX report only all year
INFChlorobenzeneDAILY MX report only all year
INFChryseneDAILY MX report only all year
INFDiethyl phthalateDAILY MX report only all year
INFDimethyl phthalateDAILY MX report only all year
INF1,2-DiphenylhydrazineDAILY MX report only all year
INFEndosulfan sulfateDAILY MX report only all year
INF.beta.-EndosulfanDAILY MX report only all year
INF.alpha.-EndosulfanDAILY MX report only all year
INFEndrin aldehydeDAILY MX report only all year
INFEthylbenzeneDAILY MX report only all year
INFFluorantheneDAILY MX report only all year
INFFluoreneDAILY MX report only all year
INFHexachlorocyclopentadieneDAILY MX report only all year
INFHexachlorobutadieneDAILY MX report only all year
INFHexachloroethaneDAILY MX report only all year
INFIndeno[1,2,3-cd]pyreneDAILY MX report only all year
INFIsophoroneDAILY MX report only all year
INFMethyl bromide [Bromomethane]DAILY MX report only all year
INFMethyl chloride [Chloromethane]DAILY MX report only all year
INFMethylene chlorideDAILY MX report only all year
INFN-Nitrosodi-N-propylamineDAILY MX report only all year
INFN-NitrosodiphenylamineDAILY MX report only all year
INFN-Nitrosodimethylamine [NDMA]DAILY MX report only all year
INFNitrobenzeneDAILY MX report only all year
INFPhenanthreneDAILY MX report only all year
INFPyreneDAILY MX report only all year
INFTetrachloroethyleneDAILY MX report only all year
INF1,1-DichloroethaneDAILY MX report only all year
INF1,1-DichloroethyleneDAILY MX report only all year
INF1,1,1-TrichloroethaneDAILY MX report only all year
INF1,1,2-TrichloroethaneDAILY MX report only all year
INF1,1,2,2-TetrachloroethaneDAILY MX report only all year
INFBenzo[ghi]peryleneDAILY MX report only all year
INFBenzo[a]anthraceneDAILY MX report only all year
INF1,2-DichlorobenzeneDAILY MX report only all year
INF1,2-DichloropropaneDAILY MX report only all year
INFtrans-1,2-DichloroethyleneDAILY MX report only all year
INF1,2,4-TrichlorobenzeneDAILY MX report only all year
INFDibenz[a,h]anthraceneDAILY MX report only all year
INF1,3-DichlorobenzeneDAILY MX report only all year
INF1,4-DichlorobenzeneDAILY MX report only all year
INF2-Chloroethyl vinyl ether, [mixed]DAILY MX report only all year
INF2-ChloronaphthaleneDAILY MX report only all year
INF2-ChlorophenolDAILY MX report only all year
INF2-NitrophenolDAILY MX report only all year
INFDi-n-octyl phthalateDAILY MX report only all year
INF2,4-DichlorophenolDAILY MX report only all year
INF2,4-DimethylphenolDAILY MX report only all year
INF2,4-DinitrotolueneDAILY MX report only all year
INF2,4-DinitrophenolDAILY MX report only all year
INF2,4,6-TrichlorophenolDAILY MX report only all year
INF2,6-DinitrotolueneDAILY MX report only all year
INF3,3'-DichlorobenzidineDAILY MX report only all year
INF4-Bromophenyl phenyl etherDAILY MX report only all year
INF4-Chlorophenyl phenyl etherDAILY MX report only all year
INF4-NitrophenolDAILY MX report only all year
INFPCB-1016DAILY MX report only all year
INF2,3,7,8-Tetrachlorodibenzo-p-dioxinDAILY MX report only all year
INFPhenolDAILY MX report only all year
INFNaphthaleneDAILY MX report only all year
INFPentachlorophenolDAILY MX report only all year
INFDi[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
INFDi-n-butyl phthalateDAILY MX report only all year
INFBenzidineDAILY MX report only all year
INFVinyl chlorideDAILY MX report only all year
INFTrichloroethyleneDAILY MX report only all year
INF4,4'-DDTDAILY MX report only all year
INF4,4'-DDDDAILY MX report only all year
INF4,4'-DDEDAILY MX report only all year
INFAldrinDAILY MX report only all year
INF.alpha.-BHCDAILY MX report only all year
INF.beta.-BHCDAILY MX report only all year
INF.gamma.-BHCDAILY MX report only all year
INFChlordane [tech mix. and metabolites]DAILY MX report only all year
INFDieldrinDAILY MX report only all year
INFEndrinDAILY MX report only all year
INFToxapheneDAILY MX report only all year
INFHeptachlorDAILY MX report only all year
INFHeptachlor epoxideDAILY MX report only all year
INFPCB-1221DAILY MX report only all year
INFPCB-1232DAILY MX report only all year
INFPCB-1242DAILY MX report only all year
INFPCB-1248DAILY MX report only all year
INFPCB-1254DAILY MX report only all year
INFPCB-1260DAILY MX report only all year
INFHexachlorobenzeneDAILY MX report only all year
INFFlow, in conduit or thru treatment plantDAILY AV report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INF4-Chloro-3-methylphenolDAILY MX report only all year
INFMercury, total recoverableDAILY MX report only all year
INF1,3-DichloropropeneDAILY MX report only all year
INFChloroethaneDAILY MX report only all year

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