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El Centro, City of

Sewage treatment plant, major discharger, El Centro, California. NPDES permit CA0104426 expired Mar 31, 2024; its limits still apply. Last 12 months: over a limit 3 times (last July 2026), 11 of 29 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 33 days after each period: outfall 001 form A monthly (28 values), outfall 001 form Q quarterly (14 values), outfall INF form A monthly (6 values), outfall 001 form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 29 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Selenium, total recoverable, monthly average.87 lb/d≤ .24 lb/d263%
June 2026Solids, suspended percent removal, monthly average minimum81 %≥ 85 %27%
July 2026Solids, suspended percent removal, monthly average minimum81.2 %≥ 85 %25%

Limits in force (302)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 2000 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 3000 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 2000 lb/dall year001
Solids, total suspendedweekly average≤ 3000 lb/dall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Cyanide, total [as CN]daily maximumreport only (ug/L)all year001
Cyanide, total [as CN]daily maximumreport only (ug/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Asbestosdaily maximumreport only (ct/L)all year001
Asbestosdaily maximumreport only (ct/L)all year001
Arsenic, total recoverabledaily maximumreport only (ug/L)all year001
Arsenic, total recoverabledaily maximumreport only (ug/L)all year001
Selenium, total recoverablemonthly average≤ 3.6 ug/Lall year001
Selenium, total recoverabledaily maximum≤ 7.2 ug/Lall year001
Selenium, total recoverablemonthly average≤ .24 lb/dall year001
Selenium, total recoverabledaily maximum≤ .48 lb/dall year001
Thallium, total recoverabledaily maximumreport only (ug/L)all year001
Thallium, total recoverabledaily maximumreport only (ug/L)all year001
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year001
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year001
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all year001
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Silver total recoverabledaily maximumreport only (ug/L)all year001
Silver total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Antimony, total recoverabledaily maximumreport only (ug/L)all year001
Antimony, total recoverabledaily maximumreport only (ug/L)all year001
Oil and greasedaily maximum≤ 25 mg/Lall year001
Oil and greasedaily maximum≤ 25 mg/Lall year001
Oil and greasedaily maximum≤ 1670 lb/dall year001
Oil and greasedaily maximum≤ 1670 lb/dall year001
2-Methyl-4,6-dinitrophenoldaily maximumreport only (ug/L)all year001
2-Methyl-4,6-dinitrophenoldaily maximumreport only (ug/L)all year001
Phosphate, ortho [as P]daily maximumreport only (mg/L)all year001
Dichlorobromomethanedaily maximumreport only (ug/L)all year001
Dichlorobromomethanedaily maximumreport only (ug/L)all year001
Carbon tetrachloridedaily maximumreport only (ug/L)all year001
Carbon tetrachloridedaily maximumreport only (ug/L)all year001
1,2-Dichloroethanedaily maximumreport only (ug/L)all year001
1,2-Dichloroethanedaily maximumreport only (ug/L)all year001
Bromoformdaily maximumreport only (ug/L)all year001
Bromoformdaily maximumreport only (ug/L)all year001
Dibromochloromethanedaily maximumreport only (ug/L)all year001
Dibromochloromethanedaily maximumreport only (ug/L)all year001
Chloroformdaily maximumreport only (ug/L)all year001
Chloroformdaily maximumreport only (ug/L)all year001
Toluenedaily maximumreport only (ug/L)all year001
Toluenedaily maximumreport only (ug/L)all year001
Benzenedaily maximumreport only (ug/L)all year001
Benzenedaily maximumreport only (ug/L)all year001
.delta.-BHCdaily maximumreport only (ug/L)all year001
.delta.-BHCdaily maximumreport only (ug/L)all year001
Acenaphthylenedaily maximumreport only (ug/L)all year001
Acenaphthylenedaily maximumreport only (ug/L)all year001
Acenaphthenedaily maximumreport only (ug/L)all year001
Acenaphthenedaily maximumreport only (ug/L)all year001
Acroleindaily maximumreport only (ug/L)all year001
Acroleindaily maximumreport only (ug/L)all year001
Acrylonitriledaily maximumreport only (ug/L)all year001
Acrylonitriledaily maximumreport only (ug/L)all year001
Anthracenedaily maximumreport only (ug/L)all year001
Anthracenedaily maximumreport only (ug/L)all year001
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all year001
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all year001
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all year001
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all year001
Benzo[a]pyrenedaily maximumreport only (ug/L)all year001
Benzo[a]pyrenedaily maximumreport only (ug/L)all year001
Bis[2-chloroethyl] etherdaily maximumreport only (ug/L)all year001
Bis[2-chloroethyl] etherdaily maximumreport only (ug/L)all year001
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all year001
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all year001
Bis[2-chloroisopropyl] etherdaily maximumreport only (ug/L)all year001
Bis[2-chloroisopropyl] etherdaily maximumreport only (ug/L)all year001
Butyl benzyl phthalatedaily maximumreport only (ug/L)all year001
Butyl benzyl phthalatedaily maximumreport only (ug/L)all year001
Chlorobenzenedaily maximumreport only (ug/L)all year001
Chlorobenzenedaily maximumreport only (ug/L)all year001
Chrysenedaily maximumreport only (ug/L)all year001
Chrysenedaily maximumreport only (ug/L)all year001
Diethyl phthalatedaily maximumreport only (ug/L)all year001
Diethyl phthalatedaily maximumreport only (ug/L)all year001
Dimethyl phthalatedaily maximumreport only (ug/L)all year001
Dimethyl phthalatedaily maximumreport only (ug/L)all year001
1,2-Diphenylhydrazinedaily maximumreport only (ug/L)all year001
1,2-Diphenylhydrazinedaily maximumreport only (ug/L)all year001
Endosulfan sulfatedaily maximumreport only (ug/L)all year001
Endosulfan sulfatedaily maximumreport only (ug/L)all year001
.beta.-Endosulfandaily maximumreport only (ug/L)all year001
.beta.-Endosulfandaily maximumreport only (ug/L)all year001
.alpha.-Endosulfandaily maximumreport only (ug/L)all year001
.alpha.-Endosulfandaily maximumreport only (ug/L)all year001
Endrin aldehydedaily maximumreport only (ug/L)all year001
Endrin aldehydedaily maximumreport only (ug/L)all year001
Ethylbenzenedaily maximumreport only (ug/L)all year001
Ethylbenzenedaily maximumreport only (ug/L)all year001
Fluoranthenedaily maximumreport only (ug/L)all year001
Fluoranthenedaily maximumreport only (ug/L)all year001
Fluorenedaily maximumreport only (ug/L)all year001
Fluorenedaily maximumreport only (ug/L)all year001
Hexachlorocyclopentadienedaily maximumreport only (ug/L)all year001
Hexachlorocyclopentadienedaily maximumreport only (ug/L)all year001
Hexachlorobutadienedaily maximumreport only (ug/L)all year001
Hexachlorobutadienedaily maximumreport only (ug/L)all year001
Hexachloroethanedaily maximumreport only (ug/L)all year001
Hexachloroethanedaily maximumreport only (ug/L)all year001
Indeno[1,2,3-cd]pyrenedaily maximumreport only (ug/L)all year001
Indeno[1,2,3-cd]pyrenedaily maximumreport only (ug/L)all year001
Isophoronedaily maximumreport only (ug/L)all year001
Isophoronedaily maximumreport only (ug/L)all year001
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all year001
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year001
Methylene chloridedaily maximumreport only (ug/L)all year001
Methylene chloridedaily maximumreport only (ug/L)all year001
N-Nitrosodi-N-propylaminedaily maximumreport only (ug/L)all year001
N-Nitrosodi-N-propylaminedaily maximumreport only (ug/L)all year001
N-Nitrosodiphenylaminedaily maximumreport only (ug/L)all year001
N-Nitrosodiphenylaminedaily maximumreport only (ug/L)all year001
N-Nitrosodimethylamine [NDMA]daily maximumreport only (ug/L)all year001
N-Nitrosodimethylamine [NDMA]daily maximumreport only (ug/L)all year001
Nitrobenzenedaily maximumreport only (ug/L)all year001
Nitrobenzenedaily maximumreport only (ug/L)all year001
Phenanthrenedaily maximumreport only (ug/L)all year001
Phenanthrenedaily maximumreport only (ug/L)all year001
Pyrenedaily maximumreport only (ug/L)all year001
Pyrenedaily maximumreport only (ug/L)all year001
Tetrachloroethylenedaily maximumreport only (ug/L)all year001
Tetrachloroethylenedaily maximumreport only (ug/L)all year001
1,1-Dichloroethanedaily maximumreport only (ug/L)all year001
1,1-Dichloroethanedaily maximumreport only (ug/L)all year001
1,1-Dichloroethylenedaily maximumreport only (ug/L)all year001
1,1-Dichloroethylenedaily maximumreport only (ug/L)all year001
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all year001
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all year001
1,1,2-Trichloroethanedaily maximumreport only (ug/L)all year001
1,1,2-Trichloroethanedaily maximumreport only (ug/L)all year001
1,1,2,2-Tetrachloroethanedaily maximumreport only (ug/L)all year001
1,1,2,2-Tetrachloroethanedaily maximumreport only (ug/L)all year001
Benzo[ghi]perylenedaily maximumreport only (ug/L)all year001
Benzo[ghi]perylenedaily maximumreport only (ug/L)all year001
Benzo[a]anthracenedaily maximumreport only (ug/L)all year001
Benzo[a]anthracenedaily maximumreport only (ug/L)all year001
1,2-Dichlorobenzenedaily maximumreport only (ug/L)all year001
1,2-Dichlorobenzenedaily maximumreport only (ug/L)all year001
1,2-Dichloropropanedaily maximumreport only (ug/L)all year001
1,2-Dichloropropanedaily maximumreport only (ug/L)all year001
trans-1,2-Dichloroethylenedaily maximumreport only (ug/L)all year001
trans-1,2-Dichloroethylenedaily maximumreport only (ug/L)all year001
1,2,4-Trichlorobenzenedaily maximumreport only (ug/L)all year001
1,2,4-Trichlorobenzenedaily maximumreport only (ug/L)all year001
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all year001
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all year001
1,3-Dichlorobenzenedaily maximumreport only (ug/L)all year001
1,3-Dichlorobenzenedaily maximumreport only (ug/L)all year001
1,4-Dichlorobenzenedaily maximumreport only (ug/L)all year001
1,4-Dichlorobenzenedaily maximumreport only (ug/L)all year001
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (ug/L)all year001
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (ug/L)all year001
2-Chloronaphthalenedaily maximumreport only (ug/L)all year001
2-Chloronaphthalenedaily maximumreport only (ug/L)all year001
2-Chlorophenoldaily maximumreport only (ug/L)all year001
2-Chlorophenoldaily maximumreport only (ug/L)all year001
2-Nitrophenoldaily maximumreport only (ug/L)all year001
2-Nitrophenoldaily maximumreport only (ug/L)all year001
Di-n-octyl phthalatedaily maximumreport only (ug/L)all year001
Di-n-octyl phthalatedaily maximumreport only (ug/L)all year001
2,4-Dichlorophenoldaily maximumreport only (ug/L)all year001
2,4-Dichlorophenoldaily maximumreport only (ug/L)all year001
2,4-Dimethylphenoldaily maximumreport only (ug/L)all year001
2,4-Dimethylphenoldaily maximumreport only (ug/L)all year001
2,4-Dinitrotoluenedaily maximumreport only (ug/L)all year001
2,4-Dinitrotoluenedaily maximumreport only (ug/L)all year001
2,4-Dinitrophenoldaily maximumreport only (ug/L)all year001
2,4-Dinitrophenoldaily maximumreport only (ug/L)all year001
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all year001
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all year001
2,6-Dinitrotoluenedaily maximumreport only (ug/L)all year001
2,6-Dinitrotoluenedaily maximumreport only (ug/L)all year001
3,3'-Dichlorobenzidinedaily maximumreport only (ug/L)all year001
3,3'-Dichlorobenzidinedaily maximumreport only (ug/L)all year001
4-Bromophenyl phenyl etherdaily maximumreport only (ug/L)all year001
4-Bromophenyl phenyl etherdaily maximumreport only (ug/L)all year001
4-Chlorophenyl phenyl etherdaily maximumreport only (ug/L)all year001
4-Chlorophenyl phenyl etherdaily maximumreport only (ug/L)all year001
4-Nitrophenoldaily maximumreport only (ug/L)all year001
4-Nitrophenoldaily maximumreport only (ug/L)all year001
PCB-1016daily maximumreport only (ug/L)all year001
PCB-1016daily maximumreport only (ug/L)all year001
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximumreport only (ug/L)all year001
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximumreport only (ug/L)all year001
Phenoldaily maximumreport only (ug/L)all year001
Phenoldaily maximumreport only (ug/L)all year001
Naphthalenedaily maximumreport only (ug/L)all year001
Naphthalenedaily maximumreport only (ug/L)all year001
Pentachlorophenoldaily maximumreport only (ug/L)all year001
Pentachlorophenoldaily maximumreport only (ug/L)all year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year001
Di-n-butyl phthalatedaily maximumreport only (ug/L)all year001
Di-n-butyl phthalatedaily maximumreport only (ug/L)all year001
Benzidinedaily maximumreport only (ug/L)all year001
Benzidinedaily maximumreport only (ug/L)all year001
Vinyl chloridedaily maximumreport only (ug/L)all year001
Vinyl chloridedaily maximumreport only (ug/L)all year001
Trichloroethylenedaily maximumreport only (ug/L)all year001
Trichloroethylenedaily maximumreport only (ug/L)all year001
4,4'-DDTdaily maximumreport only (ug/L)all year001
4,4'-DDTdaily maximumreport only (ug/L)all year001
4,4'-DDDdaily maximumreport only (ug/L)all year001
4,4'-DDDdaily maximumreport only (ug/L)all year001
4,4'-DDEdaily maximumreport only (ug/L)all year001
4,4'-DDEdaily maximumreport only (ug/L)all year001
Aldrindaily maximumreport only (ug/L)all year001
Aldrindaily maximumreport only (ug/L)all year001
.alpha.-BHCdaily maximumreport only (ug/L)all year001
.alpha.-BHCdaily maximumreport only (ug/L)all year001
.beta.-BHCdaily maximumreport only (ug/L)all year001
.beta.-BHCdaily maximumreport only (ug/L)all year001
.gamma.-BHCdaily maximumreport only (ug/L)all year001
.gamma.-BHCdaily maximumreport only (ug/L)all year001
Chlordane [tech mix. and metabolites]daily maximumreport only (ug/L)all year001
Chlordane [tech mix. and metabolites]daily maximumreport only (ug/L)all year001
Dieldrindaily maximumreport only (ug/L)all year001
Dieldrindaily maximumreport only (ug/L)all year001
Endrindaily maximumreport only (ug/L)all year001
Endrindaily maximumreport only (ug/L)all year001
Toxaphenedaily maximumreport only (ug/L)all year001
Toxaphenedaily maximumreport only (ug/L)all year001
Heptachlordaily maximumreport only (ug/L)all year001
Heptachlordaily maximumreport only (ug/L)all year001
Heptachlor epoxidedaily maximumreport only (ug/L)all year001
Heptachlor epoxidedaily maximumreport only (ug/L)all year001
PCB-1221daily maximumreport only (ug/L)all year001
PCB-1221daily maximumreport only (ug/L)all year001
PCB-1232daily maximumreport only (ug/L)all year001
PCB-1232daily maximumreport only (ug/L)all year001
PCB-1242daily maximumreport only (ug/L)all year001
PCB-1242daily maximumreport only (ug/L)all year001
PCB-1248daily maximumreport only (ug/L)all year001
PCB-1248daily maximumreport only (ug/L)all year001
PCB-1254daily maximumreport only (ug/L)all year001
PCB-1254daily maximumreport only (ug/L)all year001
PCB-1260daily maximumreport only (ug/L)all year001
PCB-1260daily maximumreport only (ug/L)all year001
Hexachlorobenzenedaily maximumreport only (ug/L)all year001
Hexachlorobenzenedaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ 8 MGDall year001
E. coli30-day geometric mean≤ 126 MPN/100mLall year001
E. colimaximum single sample≤ 400 MPN/100mLall year001
Flow, totaltotalreport only (Mgal)all year001
4-Chloro-3-methylphenoldaily maximumreport only (ug/L)all year001
4-Chloro-3-methylphenoldaily maximumreport only (ug/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Mercury, total recoverablemonthly average≤ .051 ug/Lall year001
Mercury, total recoverabledaily maximum≤ .102 ug/Lall year001
Mercury, total recoverablemonthly average≤ .0034 lb/dall year001
Mercury, total recoverabledaily maximum≤ .0068 lb/dall year001
Coliform, fecal general30-day geometric mean≤ 200 MPN/100mLall year001
Coliform, fecal general90th percentile≤ 400 MPN/100mLall year001
1,3-Dichloropropenedaily maximumreport only (ug/L)all year001
1,3-Dichloropropenedaily maximumreport only (ug/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Chloroethanedaily maximumreport only (ug/L)all year001
Chloroethanedaily maximumreport only (ug/L)all year001
Pass/Fail Static 4 Day Chronic Raphidocelis subcapitatamonthly medianreport only (pass=0;fail=1)all year001
Pass/Fail Static 4 Day Chronic Raphidocelis subcapitatadaily maximumreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly medianreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasmonthly medianreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasdaily maximumreport only (pass=0;fail=1)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all yearINF
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Solids, total suspendeddaily maximumreport only (lb/d)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

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/CA0104426 · MCP: https://passage-data.com/mcp