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Fairfield-Suisun Sewer District

Sewage treatment plant, major discharger, Fairfield, California. NPDES permit CA0038024, in force until Jan 31, 2031. Last 12 months: no values over a limit, 24 of 47 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 33 days after each period: outfall EFF1 form A monthly (2 values), outfall EFF2 form A monthly (1 value), outfall EFF3 form A monthly (1 value), outfall EFF5 form A monthly (2 values), outfall EFF6 form A monthly (1 value), outfall EFFD form A monthly (19 values), and 9 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 113 reports late

Limits in force (207)

ParameterStatisticLimitMonthsOutfall
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearEFF1
Flow, totalmonthly totalreport only (Mgal)all yearEFF1
Flow, totalmonthly totalreport only (Mgal)all yearEFF2
Flow, totalmonthly totalreport only (Mgal)all yearEFF3
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearEFF5
Flow, totalmonthly totalreport only (Mgal)all yearEFF5
Flow, totalmonthly totalreport only (Mgal)all yearEFF6
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all yearEFFD
Turbiditydaily maximum≤ 10 NTUall yearEFFD
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearEFFD
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall yearEFFD
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall yearEFFD
pHinstantaneous minimum≥ 6.5 SUall yearEFFD
pHinstantaneous maximum≤ 8.5 SUall yearEFFD
Salinitydaily maximumreport only (ppt)all yearEFFD
Solids, total suspendedmonthly average≤ 10 mg/Lall yearEFFD
Solids, total suspendedweekly average≤ 15 mg/Lall yearEFFD
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall yearEFFD
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/Lall yearEFFD
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)all yearEFFD
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)all yearEFFD
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearEFFD
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearEFFD
Nitrite + Nitrate total [as N]monthly averagereport only (kg/d)all yearEFFD
Nitrite + Nitrate total [as N]daily maximumreport only (kg/d)all yearEFFD
Nitrogen, inorganic totalmonthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, DecEFFD
Nitrogen, inorganic totalmonthly averagereport only (mg/L)May–SepEFFD
Nitrogen, inorganic totaldaily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, DecEFFD
Nitrogen, inorganic totaldaily maximumreport only (mg/L)May–SepEFFD
Nitrogen, inorganic totalmonthly averagereport only (kg/d)Jan, Feb, Mar, Apr, Oct, Nov, DecEFFD
Nitrogen, inorganic totalmonthly average≤ 1600 kg/dMay–SepEFFD
Nitrogen, inorganic totaldaily maximumreport only (kg/d)Jan, Feb, Mar, Apr, Oct, Nov, DecEFFD
Nitrogen, inorganic totaldaily maximumreport only (kg/d)May–SepEFFD
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearEFFD
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearEFFD
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearEFFD
Phosphorus, total [as P]daily maximumreport only (kg/d)all yearEFFD
Cyanide, total [as CN]monthly average≤ 7.4 ug/Lall yearEFFD
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearEFFD
Cyanide, total [as CN]daily maximum≤ 12 ug/Lall yearEFFD
Asbestosdaily maximumreport only (ct/L)all yearEFFD
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Selenium, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Thallium, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearEFFD
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearEFFD
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearEFFD
Nickel, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Silver total recoverabledaily maximumreport only (ug/L)all yearEFFD
Zinc, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Lead, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Copper, total recoverablemonthly average≤ 11 ug/Lall yearEFFD
Copper, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Copper, total recoverabledaily maximum≤ 15 ug/Lall yearEFFD
Antimony, total recoverabledaily maximumreport only (ug/L)all yearEFFD
2-Methyl-4,6-dinitrophenoldaily maximumreport only (ug/L)all yearEFFD
Dichlorobromomethanedaily maximumreport only (ug/L)all yearEFFD
Carbon tetrachloridedaily maximumreport only (ug/L)all yearEFFD
1,2-Dichloroethanedaily maximumreport only (ug/L)all yearEFFD
Bromoformdaily maximumreport only (ug/L)all yearEFFD
Dibromochloromethanedaily maximumreport only (ug/L)all yearEFFD
Chloroformdaily maximumreport only (ug/L)all yearEFFD
Toluenedaily maximumreport only (ug/L)all yearEFFD
Benzenedaily maximumreport only (ug/L)all yearEFFD
.delta.-BHCdaily maximumreport only (ug/L)all yearEFFD
Acenaphthylenedaily maximumreport only (ug/L)all yearEFFD
Acenaphthenedaily maximumreport only (ug/L)all yearEFFD
Acroleindaily maximumreport only (ug/L)all yearEFFD
Acrylonitriledaily maximumreport only (ug/L)all yearEFFD
Anthracenedaily maximumreport only (ug/L)all yearEFFD
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all yearEFFD
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all yearEFFD
Benzo[a]pyrenedaily maximumreport only (ug/L)all yearEFFD
Bis[2-chloroethyl] etherdaily maximumreport only (ug/L)all yearEFFD
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all yearEFFD
Bis[2-chloroisopropyl] etherdaily maximumreport only (ug/L)all yearEFFD
Butyl benzyl phthalatedaily maximumreport only (ug/L)all yearEFFD
Chlorobenzenedaily maximumreport only (ug/L)all yearEFFD
Chrysenedaily maximumreport only (ug/L)all yearEFFD
Diethyl phthalatedaily maximumreport only (ug/L)all yearEFFD
Dimethyl phthalatedaily maximumreport only (ug/L)all yearEFFD
1,2-Diphenylhydrazinedaily maximumreport only (ug/L)all yearEFFD
Endosulfan sulfatedaily maximumreport only (ug/L)all yearEFFD
.beta.-Endosulfandaily maximumreport only (ug/L)all yearEFFD
.alpha.-Endosulfandaily maximumreport only (ug/L)all yearEFFD
Endrin aldehydedaily maximumreport only (ug/L)all yearEFFD
Ethylbenzenedaily maximumreport only (ug/L)all yearEFFD
Fluoranthenedaily maximumreport only (ug/L)all yearEFFD
Fluorenedaily maximumreport only (ug/L)all yearEFFD
Hexachlorocyclopentadienedaily maximumreport only (ug/L)all yearEFFD
Hexachlorobutadienedaily maximumreport only (ug/L)all yearEFFD
Hexachloroethanedaily maximumreport only (ug/L)all yearEFFD
Indeno[1,2,3-cd]pyrenedaily maximumreport only (ug/L)all yearEFFD
Isophoronedaily maximumreport only (ug/L)all yearEFFD
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all yearEFFD
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all yearEFFD
Methylene chloridedaily maximumreport only (ug/L)all yearEFFD
N-Nitrosodi-N-propylaminedaily maximumreport only (ug/L)all yearEFFD
N-Nitrosodiphenylaminedaily maximumreport only (ug/L)all yearEFFD
N-Nitrosodimethylamine [NDMA]daily maximumreport only (ug/L)all yearEFFD
Nitrobenzenedaily maximumreport only (ug/L)all yearEFFD
Phenanthrenedaily maximumreport only (ug/L)all yearEFFD
Pyrenedaily maximumreport only (ug/L)all yearEFFD
Tetrachloroethylenedaily maximumreport only (ug/L)all yearEFFD
1,1-Dichloroethanedaily maximumreport only (ug/L)all yearEFFD
1,1-Dichloroethylenedaily maximumreport only (ug/L)all yearEFFD
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all yearEFFD
1,1,2-Trichloroethanedaily maximumreport only (ug/L)all yearEFFD
1,1,2,2-Tetrachloroethanedaily maximumreport only (ug/L)all yearEFFD
Benzo[ghi]perylenedaily maximumreport only (ug/L)all yearEFFD
Benzo[a]anthracenedaily maximumreport only (ug/L)all yearEFFD
1,2-Dichlorobenzenedaily maximumreport only (ug/L)all yearEFFD
1,2-Dichloropropanedaily maximumreport only (ug/L)all yearEFFD
trans-1,2-Dichloroethylenedaily maximumreport only (ug/L)all yearEFFD
1,2,4-Trichlorobenzenedaily maximumreport only (ug/L)all yearEFFD
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all yearEFFD
1,3-Dichlorobenzenedaily maximumreport only (ug/L)all yearEFFD
1,4-Dichlorobenzenedaily maximumreport only (ug/L)all yearEFFD
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (ug/L)all yearEFFD
2-Chloronaphthalenedaily maximumreport only (ug/L)all yearEFFD
2-Chlorophenoldaily maximumreport only (ug/L)all yearEFFD
2-Nitrophenoldaily maximumreport only (ug/L)all yearEFFD
Di-n-octyl phthalatedaily maximumreport only (ug/L)all yearEFFD
2,4-Dichlorophenoldaily maximumreport only (ug/L)all yearEFFD
2,4-Dimethylphenoldaily maximumreport only (ug/L)all yearEFFD
2,4-Dinitrotoluenedaily maximumreport only (ug/L)all yearEFFD
2,4-Dinitrophenoldaily maximumreport only (ug/L)all yearEFFD
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all yearEFFD
2,6-Dinitrotoluenedaily maximumreport only (ug/L)all yearEFFD
3,3'-Dichlorobenzidinedaily maximumreport only (ug/L)all yearEFFD
4-Bromophenyl phenyl etherdaily maximumreport only (ug/L)all yearEFFD
4-Chlorophenyl phenyl etherdaily maximumreport only (ug/L)all yearEFFD
4-Nitrophenoldaily maximumreport only (ug/L)all yearEFFD
PCB-1016daily maximumreport only (ug/L)all yearEFFD
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximumreport only (ug/L)all yearEFFD
Phenoldaily maximumreport only (ug/L)all yearEFFD
Naphthalenedaily maximumreport only (ug/L)all yearEFFD
Pentachlorophenoldaily maximumreport only (ug/L)all yearEFFD
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all yearEFFD
Di-n-butyl phthalatedaily maximumreport only (ug/L)all yearEFFD
Benzidinedaily maximumreport only (ug/L)all yearEFFD
Vinyl chloridedaily maximumreport only (ug/L)all yearEFFD
Trichloroethylenedaily maximumreport only (ug/L)all yearEFFD
4,4'-DDTdaily maximumreport only (ug/L)all yearEFFD
4,4'-DDDdaily maximumreport only (ug/L)all yearEFFD
4,4'-DDEdaily maximumreport only (ug/L)all yearEFFD
Aldrindaily maximumreport only (ug/L)all yearEFFD
.alpha.-BHCdaily maximumreport only (ug/L)all yearEFFD
.beta.-BHCdaily maximumreport only (ug/L)all yearEFFD
.gamma.-BHCdaily maximumreport only (ug/L)all yearEFFD
Chlordane [tech mix. and metabolites]daily maximumreport only (ug/L)all yearEFFD
Dieldrindaily maximumreport only (ug/L)all yearEFFD
Endrindaily maximumreport only (ug/L)all yearEFFD
Toxaphenedaily maximumreport only (ug/L)all yearEFFD
Heptachlordaily maximumreport only (ug/L)all yearEFFD
Heptachlor epoxidedaily maximumreport only (ug/L)all yearEFFD
PCB-1221daily maximumreport only (ug/L)all yearEFFD
PCB-1232daily maximumreport only (ug/L)all yearEFFD
PCB-1242daily maximumreport only (ug/L)all yearEFFD
PCB-1248daily maximumreport only (ug/L)all yearEFFD
PCB-1254daily maximumreport only (ug/L)all yearEFFD
PCB-1260daily maximumreport only (ug/L)all yearEFFD
Hexachlorobenzenedaily maximumreport only (ug/L)all yearEFFD
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearEFFD
Flow, totalmonthly totalreport only (Mgal)all yearEFFD
Polychlorinated biphenyls [PCBs], sum of congenersmonthly averagereport only (ug/L)all yearEFFD
Polychlorinated biphenyls [PCBs], sum of congenersdaily maximumreport only (ug/L)all yearEFFD
Polychlorinated biphenyls [PCBs], sum of Aroclorsmonthly average≤ .00039 ug/Lall yearEFFD
Polychlorinated biphenyls [PCBs], sum of Aroclorsdaily maximum≤ .00049 ug/Lall yearEFFD
Enterococcigeometric mean≤ 30 CFU/100mLall yearEFFD
Enterococci90th percentile≤ 110 CFU/100mLall yearEFFD
4-Chloro-3-methylphenoldaily maximumreport only (ug/L)all yearEFFD
Mercury, total recoverablemonthly average≤ .025 ug/Lall yearEFFD
Mercury, total recoverabledaily maximumreport only (ug/L)all yearEFFD
Mercury, total recoverableweekly average≤ .027 ug/Lall yearEFFD
1,3-Dichloropropenedaily maximumreport only (ug/L)all yearEFFD
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all yearEFFD
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearEFFD
TCDD equivalentsmonthly average≤ .000014 ng/Lall yearEFFD
TCDD equivalentsdaily maximum≤ .000028 ng/Lall yearEFFD
Chloroethanedaily maximumreport only (ug/L)all yearEFFD
Chronic Mthd Sublethal Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 0 pass=0;fail=1all yearEFFD
Chronic Mthd Sublethal Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, StatR7d P promelasmonthly median≤ 0 pass=0;fail=1all yearEFFD
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 50 % effectall yearEFFD
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearINF1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all yearINF1
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)all yearINF1
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)all yearINF1
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearINF1
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all yearINF1
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (kg/d)all yearINF1
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (kg/d)all yearINF1
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearINF1
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF1
Nitrite + Nitrate total [as N]monthly averagereport only (kg/d)all yearINF1
Nitrite + Nitrate total [as N]daily maximumreport only (kg/d)all yearINF1
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearINF1
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearINF1
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearINF1
Phosphorus, total [as P]daily maximumreport only (kg/d)all yearINF1
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearINF1
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearINF1
Flow, totalmonthly totalreport only (Mgal)all yearINF1
Mercury, total recoverableannual average≤ .17 kg/yrall yearSUM

How strict are these limits?

Cited limits by parameter: California's rules and the federal ones.

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Your permit document is the final word. As JSON: /api/v1/permits/CA0038024 · MCP: https://passage-data.com/mcp