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Colton, City of

Sewage treatment plant, major discharger, Colton, California. NPDES permit CA0105236 expired Dec 31, 2017; its limits still apply. Last 12 months: no values over a limit, 4 of 27 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 31 days after each period: outfall 001 form A monthly (13 values), outfall INF form A monthly (15 values), outfall INF form Q quarterly (1 value), outfall 001 form Y yearly, outfall INF form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 30 reports late

Limits in force (280)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Chighest weekly average≤ 45 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedhighest weekly average≤ 45 mg/Lall year001
Cyanide, total [as CN]daily maximumreport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (mg/L)all year001
Selenium, total recoverabledaily maximumreport only (mg/L)all year001
Thallium, total recoverabledaily maximumreport only (mg/L)all year001
Beryllium, total recoverable [as Be]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year001
Chromium, trivalent [as Cr]daily maximumreport only (mg/L)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)all year001
Silver total recoverabledaily maximumreport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Cadmium, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Antimony, total recoverabledaily maximumreport only (mg/L)all year001
2-Methyl-4,6-dinitrophenoldaily maximumreport only (mg/L)all year001
Dichlorobromomethanedaily maximumreport only (mg/L)all year001
Carbon tetrachloridedaily maximumreport only (mg/L)all year001
1,2-Dichloroethanedaily maximumreport only (mg/L)all year001
Bromoformdaily maximumreport only (mg/L)all year001
Dibromochloromethanedaily maximumreport only (mg/L)all year001
Chloroformdaily maximumreport only (mg/L)all year001
Toluenedaily maximumreport only (mg/L)all year001
Benzenedaily maximumreport only (mg/L)all year001
.delta.-BHCdaily maximumreport only (mg/L)all year001
Acenaphthylenedaily maximumreport only (mg/L)all year001
Acenaphthenedaily maximumreport only (mg/L)all year001
Acroleindaily maximumreport only (mg/L)all year001
Acrylonitriledaily maximumreport only (mg/L)all year001
Anthracenedaily maximumreport only (mg/L)all year001
Benzo[b]fluoranthenedaily maximumreport only (mg/L)all year001
Benzo[k]fluoranthenedaily maximumreport only (mg/L)all year001
Benzo[a]pyrenedaily maximumreport only (mg/L)all year001
Bis[2-chloroethyl] etherdaily maximumreport only (mg/L)all year001
Bis[2-chloroethoxy]methanedaily maximumreport only (mg/L)all year001
Bis[2-chloroisopropyl] etherdaily maximumreport only (mg/L)all year001
Butyl benzyl phthalatedaily maximumreport only (mg/L)all year001
Chlorobenzenedaily maximumreport only (mg/L)all year001
Chrysenedaily maximumreport only (mg/L)all year001
Diethyl phthalatedaily maximumreport only (mg/L)all year001
Dimethyl phthalatedaily maximumreport only (mg/L)all year001
1,2-Diphenylhydrazinedaily maximumreport only (mg/L)all year001
Endosulfan sulfatedaily maximumreport only (mg/L)all year001
.beta.-Endosulfandaily maximumreport only (mg/L)all year001
.alpha.-Endosulfandaily maximumreport only (mg/L)all year001
Endrin aldehydedaily maximumreport only (mg/L)all year001
Ethylbenzenedaily maximumreport only (mg/L)all year001
Fluoranthenedaily maximumreport only (mg/L)all year001
Fluorenedaily maximumreport only (mg/L)all year001
Hexachlorocyclopentadienedaily maximumreport only (mg/L)all year001
Hexachlorobutadienedaily maximumreport only (mg/L)all year001
Hexachloroethanedaily maximumreport only (mg/L)all year001
Indeno[1,2,3-cd]pyrenedaily maximumreport only (mg/L)all year001
Isophoronedaily maximumreport only (mg/L)all year001
Methyl bromide [Bromomethane]daily maximumreport only (mg/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (mg/L)all year001
Methylene chloridedaily maximumreport only (mg/L)all year001
N-Nitrosodi-N-propylaminedaily maximumreport only (mg/L)all year001
N-Nitrosodiphenylaminedaily maximumreport only (mg/L)all year001
N-Nitrosodimethylamine [NDMA]daily maximumreport only (mg/L)all year001
Nitrobenzenedaily maximumreport only (mg/L)all year001
Phenanthrenedaily maximumreport only (mg/L)all year001
Pyrenedaily maximumreport only (mg/L)all year001
Tetrachloroethylenedaily maximumreport only (mg/L)all year001
1,1-Dichloroethanedaily maximumreport only (mg/L)all year001
1,1-Dichloroethylenedaily maximumreport only (mg/L)all year001
1,1,1-Trichloroethanedaily maximumreport only (mg/L)all year001
1,1,2-Trichloroethanedaily maximumreport only (mg/L)all year001
1,1,2,2-Tetrachloroethanedaily maximumreport only (mg/L)all year001
Benzo[ghi]perylenedaily maximumreport only (mg/L)all year001
Benzo[a]anthracenedaily maximumreport only (mg/L)all year001
1,2-Dichlorobenzenedaily maximumreport only (mg/L)all year001
1,2-Dichloropropanedaily maximumreport only (mg/L)all year001
trans-1,2-Dichloroethylenedaily maximumreport only (mg/L)all year001
1,2,4-Trichlorobenzenedaily maximumreport only (mg/L)all year001
Dibenz[a,h]anthracenedaily maximumreport only (mg/L)all year001
1,3-Dichlorobenzenedaily maximumreport only (mg/L)all year001
1,4-Dichlorobenzenedaily maximumreport only (mg/L)all year001
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (mg/L)all year001
2-Chloronaphthalenedaily maximumreport only (mg/L)all year001
2-Chlorophenoldaily maximumreport only (mg/L)all year001
2-Nitrophenoldaily maximumreport only (mg/L)all year001
Di-n-octyl phthalatedaily maximumreport only (mg/L)all year001
2,4-Dichlorophenoldaily maximumreport only (mg/L)all year001
2,4-Dimethylphenoldaily maximumreport only (mg/L)all year001
2,4-Dinitrotoluenedaily maximumreport only (mg/L)all year001
2,4-Dinitrophenoldaily maximumreport only (mg/L)all year001
2,4,6-Trichlorophenoldaily maximumreport only (mg/L)all year001
2,6-Dinitrotoluenedaily maximumreport only (mg/L)all year001
3,3'-Dichlorobenzidinedaily maximumreport only (mg/L)all year001
4-Bromophenyl phenyl etherdaily maximumreport only (mg/L)all year001
4-Chlorophenyl phenyl etherdaily maximumreport only (mg/L)all year001
4-Nitrophenoldaily maximumreport only (mg/L)all year001
PCB-1016daily maximumreport only (mg/L)all year001
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximumreport only (mg/L)all year001
Phenoldaily maximumreport only (mg/L)all year001
Naphthalenedaily maximumreport only (mg/L)all year001
Pentachlorophenoldaily maximumreport only (mg/L)all year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (mg/L)all year001
Di-n-butyl phthalatedaily maximumreport only (mg/L)all year001
Benzidinedaily maximumreport only (mg/L)all year001
Vinyl chloridedaily maximumreport only (mg/L)all year001
Trichloroethylenedaily maximumreport only (mg/L)all year001
4,4'-DDTdaily maximumreport only (mg/L)all year001
4,4'-DDDdaily maximumreport only (mg/L)all year001
4,4'-DDEdaily maximumreport only (mg/L)all year001
Aldrindaily maximumreport only (mg/L)all year001
.alpha.-BHCdaily maximumreport only (mg/L)all year001
.beta.-BHCdaily maximumreport only (mg/L)all year001
.gamma.-BHCdaily maximumreport only (mg/L)all year001
Chlordane [tech mix. and metabolites]daily maximumreport only (mg/L)all year001
Dieldrindaily maximumreport only (mg/L)all year001
Endrindaily maximumreport only (mg/L)all year001
Toxaphenedaily maximumreport only (mg/L)all year001
Heptachlordaily maximumreport only (mg/L)all year001
Heptachlor epoxidedaily maximumreport only (mg/L)all year001
PCB-1221daily maximumreport only (mg/L)all year001
PCB-1232daily maximumreport only (mg/L)all year001
PCB-1242daily maximumreport only (mg/L)all year001
PCB-1248daily maximumreport only (mg/L)all year001
PCB-1254daily maximumreport only (mg/L)all year001
PCB-1260daily maximumreport only (mg/L)all year001
Hexachlorobenzenedaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly averagereport only (mg/L)all year001
Chlorine, total residualdaily maximumreport only (mg/L)all year001
4-Chloro-3-methylphenoldaily maximumreport only (mg/L)all year001
Mercury, total recoverabledaily maximumreport only (mg/L)all year001
Coliform, total general7-day median≤ 23 MPN/100mLall year001
1,3-Dichloropropenedaily maximumreport only (mg/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 (mg/L)all year001
Specific conductancemonthly averagereport only (umho/cm)all yearINF
Specific conductancedaily maximumreport only (umho/cm)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF
pHminimumreport only (SU)all yearINF
pHmaximumreport only (SU)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, inorganic totaldaily maximumreport only (mg/L)all yearINF
Cyanide, total [as CN]daily maximumreport only (mg/L)all yearINF
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearINF
Selenium, total recoverabledaily maximumreport only (ug/L)all yearINF
Thallium, total recoverabledaily maximumreport only (ug/L)all yearINF
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearINF
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearINF
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearINF
Nickel, total recoverabledaily maximumreport only (ug/L)all yearINF
Silver total recoverabledaily maximumreport only (ug/L)all yearINF
Zinc, total recoverabledaily maximumreport only (ug/L)all yearINF
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearINF
Lead, total recoverabledaily maximumreport only (ug/L)all yearINF
Copper, total recoverabledaily maximumreport only (ug/L)all yearINF
Antimony, total recoverabledaily maximumreport only (ug/L)all yearINF
2-Methyl-4,6-dinitrophenoldaily maximumreport only (ug/L)all yearINF
Dichlorobromomethanedaily maximumreport only (ug/L)all yearINF
Carbon tetrachloridedaily maximumreport only (ug/L)all yearINF
1,2-Dichloroethanedaily maximumreport only (ug/L)all yearINF
Bromoformdaily maximumreport only (ug/L)all yearINF
Dibromochloromethanedaily maximumreport only (ug/L)all yearINF
Chloroformdaily maximumreport only (ug/L)all yearINF
Toluenedaily maximumreport only (ug/L)all yearINF
Benzenedaily maximumreport only (ug/L)all yearINF
.delta.-BHCdaily maximumreport only (ug/L)all yearINF
Acenaphthylenedaily maximumreport only (ug/L)all yearINF
Acenaphthenedaily maximumreport only (ug/L)all yearINF
Acroleindaily maximumreport only (ug/L)all yearINF
Acrylonitriledaily maximumreport only (ug/L)all yearINF
Anthracenedaily maximumreport only (ug/L)all yearINF
Benzo[b]fluoranthenedaily maximumreport only (ug/L)all yearINF
Benzo[k]fluoranthenedaily maximumreport only (ug/L)all yearINF
Benzo[a]pyrenedaily maximumreport only (ug/L)all yearINF
Bis[2-chloroethyl] etherdaily maximumreport only (ug/L)all yearINF
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all yearINF
Bis[2-chloroisopropyl] etherdaily maximumreport only (ug/L)all yearINF
Butyl benzyl phthalatedaily maximumreport only (ug/L)all yearINF
Chlorobenzenedaily maximumreport only (ug/L)all yearINF
Chrysenedaily maximumreport only (ug/L)all yearINF
Diethyl phthalatedaily maximumreport only (ug/L)all yearINF
Dimethyl phthalatedaily maximumreport only (ug/L)all yearINF
1,2-Diphenylhydrazinedaily maximumreport only (ug/L)all yearINF
Endosulfan sulfatedaily maximumreport only (ug/L)all yearINF
.beta.-Endosulfandaily maximumreport only (ug/L)all yearINF
.alpha.-Endosulfandaily maximumreport only (ug/L)all yearINF
Endrin aldehydedaily maximumreport only (ug/L)all yearINF
Ethylbenzenedaily maximumreport only (ug/L)all yearINF
Fluoranthenedaily maximumreport only (ug/L)all yearINF
Fluorenedaily maximumreport only (ug/L)all yearINF
Hexachlorocyclopentadienedaily maximumreport only (ug/L)all yearINF
Hexachlorobutadienedaily maximumreport only (ug/L)all yearINF
Hexachloroethanedaily maximumreport only (ug/L)all yearINF
Indeno[1,2,3-cd]pyrenedaily maximumreport only (ug/L)all yearINF
Isophoronedaily maximumreport only (ug/L)all yearINF
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all yearINF
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all yearINF
Methylene chloridedaily maximumreport only (ug/L)all yearINF
N-Nitrosodi-N-propylaminedaily maximumreport only (ug/L)all yearINF
N-Nitrosodiphenylaminedaily maximumreport only (ug/L)all yearINF
N-Nitrosodimethylamine [NDMA]daily maximumreport only (ug/L)all yearINF
Nitrobenzenedaily maximumreport only (ug/L)all yearINF
Phenanthrenedaily maximumreport only (ug/L)all yearINF
Pyrenedaily maximumreport only (ug/L)all yearINF
Tetrachloroethylenedaily maximumreport only (ug/L)all yearINF
1,1-Dichloroethanedaily maximumreport only (ug/L)all yearINF
1,1-Dichloroethylenedaily maximumreport only (ug/L)all yearINF
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all yearINF
1,1,2-Trichloroethanedaily maximumreport only (ug/L)all yearINF
1,1,2,2-Tetrachloroethanedaily maximumreport only (ug/L)all yearINF
Benzo[ghi]perylenedaily maximumreport only (ug/L)all yearINF
Benzo[a]anthracenedaily maximumreport only (ug/L)all yearINF
1,2-Dichlorobenzenedaily maximumreport only (ug/L)all yearINF
1,2-Dichloropropanedaily maximumreport only (ug/L)all yearINF
trans-1,2-Dichloroethylenedaily maximumreport only (ug/L)all yearINF
1,2,4-Trichlorobenzenedaily maximumreport only (ug/L)all yearINF
Dibenz[a,h]anthracenedaily maximumreport only (ug/L)all yearINF
1,3-Dichlorobenzenedaily maximumreport only (ug/L)all yearINF
1,4-Dichlorobenzenedaily maximumreport only (ug/L)all yearINF
2-Chloroethyl vinyl ether, [mixed]daily maximumreport only (ug/L)all yearINF
2-Chloronaphthalenedaily maximumreport only (ug/L)all yearINF
2-Chlorophenoldaily maximumreport only (ug/L)all yearINF
2-Nitrophenoldaily maximumreport only (ug/L)all yearINF
Di-n-octyl phthalatedaily maximumreport only (ug/L)all yearINF
2,4-Dichlorophenoldaily maximumreport only (ug/L)all yearINF
2,4-Dimethylphenoldaily maximumreport only (ug/L)all yearINF
2,4-Dinitrotoluenedaily maximumreport only (ug/L)all yearINF
2,4-Dinitrophenoldaily maximumreport only (ug/L)all yearINF
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all yearINF
2,6-Dinitrotoluenedaily maximumreport only (ug/L)all yearINF
3,3'-Dichlorobenzidinedaily maximumreport only (ug/L)all yearINF
4-Bromophenyl phenyl etherdaily maximumreport only (ug/L)all yearINF
4-Chlorophenyl phenyl etherdaily maximumreport only (ug/L)all yearINF
4-Nitrophenoldaily maximumreport only (ug/L)all yearINF
PCB-1016daily maximumreport only (ug/L)all yearINF
2,3,7,8-Tetrachlorodibenzo-p-dioxindaily maximumreport only (ug/L)all yearINF
Phenoldaily maximumreport only (ug/L)all yearINF
Naphthalenedaily maximumreport only (ug/L)all yearINF
Pentachlorophenoldaily maximumreport only (ug/L)all yearINF
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all yearINF
Di-n-butyl phthalatedaily maximumreport only (ug/L)all yearINF
Benzidinedaily maximumreport only (ug/L)all yearINF
Vinyl chloridedaily maximumreport only (ug/L)all yearINF
Trichloroethylenedaily maximumreport only (ug/L)all yearINF
4,4'-DDTdaily maximumreport only (ug/L)all yearINF
4,4'-DDDdaily maximumreport only (ug/L)all yearINF
4,4'-DDEdaily maximumreport only (ug/L)all yearINF
Aldrindaily maximumreport only (ug/L)all yearINF
.alpha.-BHCdaily maximumreport only (ug/L)all yearINF
.beta.-BHCdaily maximumreport only (ug/L)all yearINF
.gamma.-BHCdaily maximumreport only (ug/L)all yearINF
Chlordane [tech mix. and metabolites]daily maximumreport only (ug/L)all yearINF
Dieldrindaily maximumreport only (ug/L)all yearINF
Endrindaily maximumreport only (ug/L)all yearINF
Toxaphenedaily maximumreport only (ug/L)all yearINF
Heptachlordaily maximumreport only (ug/L)all yearINF
Heptachlor epoxidedaily maximumreport only (ug/L)all yearINF
PCB-1221daily maximumreport only (ug/L)all yearINF
PCB-1232daily maximumreport only (ug/L)all yearINF
PCB-1242daily maximumreport only (ug/L)all yearINF
PCB-1248daily maximumreport only (ug/L)all yearINF
PCB-1254daily maximumreport only (ug/L)all yearINF
PCB-1260daily maximumreport only (ug/L)all yearINF
Hexachlorobenzenedaily maximumreport only (ug/L)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
4-Chloro-3-methylphenoldaily maximumreport only (ug/L)all yearINF
Solids, total dissolveddaily maximumreport only (mg/L)all yearINF
Mercury, total recoverabledaily maximumreport only (ug/L)all yearINF
1,3-Dichloropropenedaily maximumreport only (ug/L)all yearINF
Chemical Oxygen Demand [COD]monthly averagereport only (mg/L)all yearINF
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all yearINF
Chloroethanedaily maximumreport only (ug/L)all yearINF

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0105236 · MCP: https://passage-data.com/mcp