Graton Community Services District

NPDES permit CA0023639 · Minor POTW · expired, expires 2023-07-31 · 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 2023-07-31 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

3values over a limit
0required values missing, on 0 form(s)
43of 71 forms filed late

Last period with anything received: 2026-06-30. Most often over: Coliform, total general (3).

Reporting

Reports are due about 94 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (232)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only all year
001Temperature, water deg. fahrenheitINST MAX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001pHMINIMUM report only all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX report only all year
001Chlorine, total residualDAILY MX report only all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total generalMW <= 240 MPN/100mL all year
001Coliform, total generalMW <= 240 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
002Temperature, water deg. fahrenheitINST MAX report only all year
002Temperature, water deg. fahrenheitINST MAX report only all year
002Oxygen, dissolved [DO]INST MIN report only all year
002Oxygen, dissolved [DO]INST MIN report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Nitrogen, ammonia total [as N]MO AVG <= 5.6 mg/L all year
002Nitrogen, ammonia total [as N]MO AVG <= 5.6 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L all year
002Ammonia, unionizedDAILY MX report only all year
002Ammonia, unionizedDAILY MX report only all year
002Nitrogen, nitrate 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
002Phosphorus, total [as P]DAILY MX report only all year
002Cyanide, total [as CN]DAILY MX report only 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 recoverableDAILY MX report only 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 plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG <= .01 mg/L all year
002Chlorine, total residualMO AVG <= .01 mg/L all year
002Chlorine, total residualDAILY MX <= .02 mg/L all year
002Chlorine, total residualDAILY MX <= .02 mg/L all year
0024-Chloro-3-methylphenolDAILY 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
002Dilution factorDAILY MX report only all year
002TCDD equivalentsMO AVG <= .000014 ng/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
002TCDD equivalentsMO AVG <= .000014 ng/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
002TCDD equivalentsDAILY MX <= .000028 ng/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
002TCDD equivalentsDAILY MX <= .000028 ng/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
002ChloroethaneDAILY MX report only all year
002%Effect Static 4 Day Chronic Raphidocelis subcapitataMO MED report only all year
002%Effect Static Renewal 96Hr Acute Ceriodaphnia dubiaMO MED report only all year
002%Effect Static Renewal 96Hr Acute Oncorhynchus mykissMO MED report only all year
002%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO MED report only all year
002%Effect Static Renewal 7Day Chronic Pimephales promelasMO MED report only all year
002Pass/Fail Static 4 Day Chronic Raphidocelis subcapitataMO MED report only all year
002Pass/Fail Static 4 Day Chronic Raphidocelis subcapitataDAILY MX report only all year
002Pass/Fail Static Renewal 96Hr Acute Ceriodaphnia dubiaMO MED report only all year
002Pass/Fail Static Renewal 96Hr Acute Ceriodaphnia dubiaDAILY MX report only all year
002Pass/Fail Static Renewal 96Hr Acute Oncorhynchus mykissMO MED report only all year
002Pass/Fail Static Renewal 96Hr Acute Oncorhynchus mykissDAILY MX report only all year
002Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO MED report only all year
002Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX report only all year
002Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO MED report only all year
002Pass/Fail Static Renewal 7Day Chronic Pimephales promelasDAILY 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
IN1ATurbidityDAILY MX report only all year
IN1ATurbidityDAILY MX report only all year
IN1BTurbidityDAILY MX report only all year
IN1BTurbidityDAILY MX report only all year
IN2ATemperature, water deg. fahrenheitINST MAX report only all year
IN2ATemperature, water deg. fahrenheitINST MAX report only all year
IN2AFlow, in conduit or thru treatment plantMO AVG report only all year
IN2AFlow, in conduit or thru treatment plantMO AVG report only all year
IN2AFlow, in conduit or thru treatment plantDAILY MX report only all year
IN2AFlow, in conduit or thru treatment plantDAILY MX report only all year
IN2BTemperature, water deg. fahrenheitINST MAX report only all year
IN2BTemperature, water deg. fahrenheitINST MAX report only all year
IN2BFlow, in conduit or thru treatment plantMO AVG report only all year
IN2BFlow, in conduit or thru treatment plantMO AVG report only all year
IN2BFlow, in conduit or thru treatment plantDAILY MX report only all year
IN2BFlow, in conduit or thru treatment plantDAILY MX report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFSolids, total suspendedDAILY MX report only all year
INFSolids, total suspendedDAILY MX report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states