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Avalon, City of

Sewage treatment plant, major discharger, Avalon, California. NPDES permit CA0054372, in force until Jun 30, 2029. Last 12 months: no values over a limit, 7 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 74 days after each period: outfall EFF1 form A monthly (44 values), outfall EFF1 form Q quarterly (29 values), outfall INF1 form A monthly (12 values), outfall INF1 form Q quarterly (8 values), outfall EFF1 form S twice a year, outfall EFF1 form ZZ twice a year, and 1 more form
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 3 required values missing, 0 of 27 reports late

Limits in force (216)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximum< 100 deg Fall yearEFF1
Turbiditymonthly average≤ 75 NTUall yearEFF1
Turbidityweekly average≤ 100 NTUall yearEFF1
Turbidityinstantaneous maximum≤ 225 NTUall yearEFF1
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all yearEFF1
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall yearEFF1
BOD, 5-day, 20 deg. Cweekly average≤ 35 mg/Lall yearEFF1
BOD, 5-day, 20 deg. Cmonthly average≤ 200 lb/dall yearEFF1
BOD, 5-day, 20 deg. Cweekly average≤ 350 lb/dall yearEFF1
pHinstantaneous minimum≥ 6 SUall yearEFF1
pHinstantaneous maximum≤ 9 SUall yearEFF1
Solids, total suspendedmonthly average≤ 30 mg/Lall yearEFF1
Solids, total suspendedweekly average≤ 45 mg/Lall yearEFF1
Solids, total suspendedmonthly average≤ 300 lb/dall yearEFF1
Solids, total suspendedweekly average≤ 450 lb/dall yearEFF1
Solids, settleabledaily maximum≤ 1 mL/Lall yearEFF1
Solids, settleableweekly average≤ 1.5 mL/Lall yearEFF1
Solids, settleableinstantaneous maximum≤ 3 mL/Lall yearEFF1
Nitrogen, organic total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrogen, ammonia total [as N]daily maximumreport only (ug/L)all yearEFF1
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearEFF1
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all yearEFF1
Cyanide, total [as CN]monthly averagereport only (ug/L)all yearEFF1
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearEFF1
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Selenium, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Thallium, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearEFF1
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearEFF1
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearEFF1
Chromium, total [as Cr]daily maximumreport only (ug/L)all yearEFF1
Copper, total [as Cu]daily maximumreport only (ug/L)all yearEFF1
Lead, total [as Pb]daily maximumreport only (ug/L)all yearEFF1
Nickel, total [as Ni]daily maximumreport only (ug/L)all yearEFF1
Nickel, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Silver, total [as Ag]monthly averagereport only (ug/L)all yearEFF1
Silver total recoverabledaily maximumreport only (ug/L)all yearEFF1
Zinc, total [as Zn]daily maximumreport only (ug/L)all yearEFF1
Zinc, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Antimony, total [as Sb]daily maximumreport only (ug/L)all yearEFF1
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Lead, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Copper, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Selenium, total [as Se]daily maximumreport only (ug/L)all yearEFF1
Arsenicdaily maximumreport only (ug/L)all yearEFF1
Antimony, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Oil and greasemonthly average≤ 25 mg/Lall yearEFF1
Oil and greasedaily maximum≤ 40 mg/Lall yearEFF1
Oil and greaseinstantaneous maximum≤ 75 mg/Lall yearEFF1
Oil and greasemonthly average≤ 250 lb/dall yearEFF1
Oil and greaseweekly average≤ 400 lb/dall yearEFF1
Oil and greaseinstantaneous maximum≤ 750 lb/dall yearEFF1
2-Methyl-4,6-dinitrophenoldaily maximumreport only (ug/L)all yearEFF1
Tributyltindaily maximumreport only (ug/L)all yearEFF1
Tritium, totaldaily maximumreport only (pCi/L)all yearEFF1
Radium 226 + radium 228, totaldaily maximumreport only (pCi/L)all yearEFF1
Strontium 90, totaldaily maximumreport only (pCi/L)all yearEFF1
Methyl tert-butyl ether [MTBE]daily maximumreport only (ug/L)all yearEFF1
Polynuclear Aromatic Hydrocarbons [PAHs]daily maximumreport only (ug/L)all yearEFF1
Uranium, total [in pci/L]daily maximumreport only (pCi/L)all yearEFF1
Dichlorobromomethanedaily maximumreport only (ug/L)all yearEFF1
Carbon tetrachloridedaily maximumreport only (ug/L)all yearEFF1
1,2-Dichloroethanedaily maximumreport only (ug/L)all yearEFF1
Dibromochloromethanedaily maximumreport only (ug/L)all yearEFF1
Chloroformdaily maximumreport only (ug/L)all yearEFF1
Chloroformdaily maximumreport only (ug/L)all yearEFF1
Toluenedaily maximumreport only (ug/L)all yearEFF1
Toluenedaily maximumreport only (ug/L)all yearEFF1
Benzenedaily maximumreport only (ug/L)all yearEFF1
Benzenedaily maximumreport only (ug/L)all yearEFF1
Acroleindaily maximumreport only (ug/L)all yearEFF1
Acrylonitriledaily maximumreport only (ug/L)all yearEFF1
Bis[2-chloroethyl] etherdaily maximumreport only (ug/L)all yearEFF1
Bis[2-chloroethoxy]methanedaily maximumreport only (ug/L)all yearEFF1
Bis[2-chloroisopropyl] etherdaily maximumreport only (ug/L)all yearEFF1
Chlorobenzenedaily maximumreport only (ug/L)all yearEFF1
Diethyl phthalatedaily maximumreport only (ug/L)all yearEFF1
Diethyl phthalatedaily maximumreport only (ug/L)all yearEFF1
Dimethyl phthalatedaily maximumreport only (ug/L)all yearEFF1
1,2-Diphenylhydrazinedaily maximumreport only (ug/L)all yearEFF1
Ethylbenzenedaily maximumreport only (ug/L)all yearEFF1
Fluoranthenedaily maximumreport only (ug/L)all yearEFF1
Hexachlorocyclopentadienedaily maximumreport only (ug/L)all yearEFF1
Hexachlorobutadienedaily maximumreport only (ug/L)all yearEFF1
Hexachloroethanedaily maximumreport only (ug/L)all yearEFF1
Isophoronedaily maximumreport only (ug/L)all yearEFF1
Methylene chloridedaily maximumreport only (ug/L)all yearEFF1
N-Nitrosodi-N-propylaminedaily maximumreport only (ug/L)all yearEFF1
N-Nitrosodiphenylaminedaily maximumreport only (ug/L)all yearEFF1
N-Nitrosodimethylamine [NDMA]daily maximumreport only (ug/L)all yearEFF1
Nitrobenzenedaily maximumreport only (ug/L)all yearEFF1
Tetrachloroethylenedaily maximumreport only (ug/L)all yearEFF1
1,1-Dichloroethylenedaily maximumreport only (ug/L)all yearEFF1
1,1,1-Trichloroethanedaily maximumreport only (ug/L)all yearEFF1
1,1,2-Trichloroethanedaily maximumreport only (ug/L)all yearEFF1
1,1,2,2-Tetrachloroethanedaily maximumreport only (ug/L)all yearEFF1
1,4-Dichlorobenzenedaily maximumreport only (ug/L)all yearEFF1
2,4-Dinitrotoluenedaily maximumreport only (ug/L)all yearEFF1
2,4-Dinitrophenoldaily maximumreport only (ug/L)all yearEFF1
2,4,6-Trichlorophenoldaily maximumreport only (ug/L)all yearEFF1
3,3'-Dichlorobenzidinedaily maximumreport only (ug/L)all yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all yearEFF1
Di-n-butyl phthalatedaily maximumreport only (ug/L)all yearEFF1
Di-n-butyl phthalatedaily maximumreport only (ug/L)all yearEFF1
Benzidinedaily maximumreport only (ug/L)all yearEFF1
Vinyl chloridedaily maximumreport only (ug/L)all yearEFF1
Trichloroethylenedaily maximumreport only (ug/L)all yearEFF1
Aldrindaily maximumreport only (ug/L)all yearEFF1
Chlordane [tech mix. and metabolites]daily maximumreport only (ug/L)all yearEFF1
DDT/DDD/DDE, sum of p,p' & o,p' isomersdaily maximumreport only (ug/L)all yearEFF1
Dieldrindaily maximumreport only (ug/L)all yearEFF1
Endosulfan, totalmonthly average≤ .55 ug/Lall yearEFF1
Endosulfan, totaldaily maximum≤ 1.1 ug/Lall yearEFF1
Endosulfan, totalinstantaneous maximum≤ 1.6 ug/Lall yearEFF1
Endosulfan, totalmonthly average≤ .0055 lb/dall yearEFF1
Endosulfan, totaldaily maximum≤ .011 lb/dall yearEFF1
Endosulfan, totalinstantaneous maximum≤ .016 lb/dall yearEFF1
Endosulfan, totaldaily maximumreport only (ug/L)all yearEFF1
Endrindaily maximumreport only (ug/L)all yearEFF1
Toxaphenedaily maximumreport only (ug/L)all yearEFF1
Heptachlordaily maximumreport only (ug/L)all yearEFF1
Heptachlor epoxidedaily maximumreport only (ug/L)all yearEFF1
Hexachlorobenzenedaily maximumreport only (ug/L)all yearEFF1
Chlorine, total residualmonthly average≤ 120 ug/Lall yearEFF1
Chlorine, total residualdaily maximum≤ 490 ug/Lall yearEFF1
Chlorine, total residualinstantaneous maximum≤ 3700 ug/Lall yearEFF1
Chlorine, total residualmonthly average≤ 1.2 lb/dall yearEFF1
Chlorine, total residualdaily maximum≤ 4.9 lb/dall yearEFF1
Chlorine, total residualinstantaneous maximum≤ 37 lb/dall yearEFF1
Chlorine, total residualdaily maximumreport only (ug/L)all yearEFF1
Chlordanemonthly averagereport only (ug/L)all yearEFF1
Nitrogen, Totaldaily maximumreport only (mg/L)all yearEFF1
Nitrogen, Ammonia Totaldaily maximumreport only (mg/L)all yearEFF1
Nitrogen, Kjeldahl Totaldaily maximumreport only (mg/L)all yearEFF1
Phosphorus, Totaldaily maximumreport only (mg/L)all yearEFF1
Polychlorinated biphenyls [PCBs], sum of Aroclorsdaily maximumreport only (ug/L)all yearEFF1
Polychlorinated biphenyls [PCBs], sum of Aroclorsdaily maximumreport only (ug/L)all yearEFF1
Enterococcimonthly averagereport only (MPN/100mL)all yearEFF1
Solids, total dissolveddaily maximumreport only (mg/L)all yearEFF1
Mercury, total [as Hg]daily maximumreport only (ug/L)all yearEFF1
Mercury, total recoverabledaily maximumreport only (ug/L)all yearEFF1
Phenols, chlorinateddaily maximumreport only (ug/L)all yearEFF1
Coliform, fecal generalmonthly averagereport only (MPN/100mL)all yearEFF1
Coliform, total generalmonthly averagereport only (MPN/100mL)all yearEFF1
1,3-Dichloropropenedaily maximumreport only (ug/L)all yearEFF1
Hexachlorocyclohexane, totaldaily maximumreport only (ug/L)all yearEFF1
Phenolic compounds, unchlorinateddaily maximumreport only (ug/L)all yearEFF1
Halomethanesdaily maximumreport only (ug/L)all yearEFF1
Halomethanesdaily maximumreport only (ug/L)all yearEFF1
Alpha gross radioactivitydaily maximumreport only (pCi/L)all yearEFF1
Dichlorobenzenedaily maximumreport only (ug/L)all yearEFF1
Flow, totaldaily maximumreport only (MGD)all yearEFF1
TCDD equivalentsdaily maximum≤ .24 pg/Lall yearEFF1
TCDD equivalentsmonthly average≤ .0029 ulb/dall yearEFF1
TCDD equivalentsdaily maximumreport only (ug/L)all yearEFF1
Gross betadaily maximumreport only (pCi/L)all yearEFF1
PFAS Sumdaily maximumreport only (ng/L)all yearEFF1
%Effect Static 72Hr Chronic Strongylocentrotus purpuratusdaily maximumreport only (% effect)all yearEFF1
Pass/Fail Static 72Hr Chronic Strongylocentrotus purpuratusdaily maximum≤ 0 pass=0;fail=1all yearEFF1
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF1
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF1
pHmonthly averagereport only (SU)all yearINF1
pHdaily maximumreport only (SU)all yearINF1
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearINF1
Nitrogen, organic total [as N]daily maximumreport only (mg/L)all yearINF1
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearINF1
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all yearINF1
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all yearINF1
Chromium, total [as Cr]daily maximumreport only (ug/L)all yearINF1
Oil and greasedaily maximumreport only (mg/L)all yearINF1
Oil and greasemonthly averagereport only (mg/L)all yearINF1
Tritium, totaldaily maximumreport only (pCi/L)all yearINF1
Radium 226, totaldaily maximumreport only (pCi/L)all yearINF1
Radium 226, totalmonthly averagereport only (pCi/L)all yearINF1
Radium 228, totaldaily maximumreport only (pCi/L)all yearINF1
Radium 228, totalmonthly averagereport only (pCi/L)all yearINF1
Strontium 90, totaldaily maximumreport only (pCi/L)all yearINF1
Polynuclear Aromatic Hydrocarbons [PAHs]daily maximumreport only (ug/L)all yearINF1
Polynuclear Aromatic Hydrocarbons [PAHs]monthly averagereport only (ug/L)all yearINF1
Uranium, total [in pci/L]monthly averagereport only (pCi/L)all yearINF1
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all yearINF1
Di[2-ethylhexyl] phthalate [DEHP]monthly averagereport only (ug/L)all yearINF1
DDTdaily maximumreport only (ug/L)all yearINF1
DDTmonthly averagereport only (ug/L)all yearINF1
Endosulfan, totaldaily maximumreport only (ug/L)all yearINF1
Endosulfan, totalmonthly averagereport only (ug/L)all yearINF1
Chlordanedaily maximumreport only (ug/L)all yearINF1
Chlordanemonthly averagereport only (ug/L)all yearINF1
Nitrogen, Nitrite Totaldaily maximumreport only (mg/L)all yearINF1
Nitrogen, Nitrate Totaldaily maximumreport only (mg/L)all yearINF1
Nitrogen, Nitrate Totalmonthly averagereport only (mg/L)all yearINF1
Nitrogen, Kjeldahl Totaldaily maximumreport only (mg/L)all yearINF1
Polychlorinated biphenyls [PCBs], sum of Aroclorsdaily maximumreport only (ug/L)all yearINF1
Polychlorinated biphenyls [PCBs], sum of Aroclorsmonthly averagereport only (ug/L)all yearINF1
Phenolic compounds, totaldaily maximumreport only (ug/L)all yearINF1
Phenolic compounds, totalmonthly averagereport only (ug/L)all yearINF1
Mercury, total [as Hg]daily maximumreport only (ug/L)all yearINF1
Flowdaily maximumreport only (MGD)all yearINF1
Flowmonthly averagereport only (MGD)all yearINF1
Hexachlorocyclohexane, totaldaily maximumreport only (ug/L)all yearINF1
Hexachlorocyclohexane, totalmonthly averagereport only (ug/L)all yearINF1
Phenolic compounds, unchlorinateddaily maximumreport only (ug/L)all yearINF1
Halomethanesdaily maximumreport only (ug/L)all yearINF1
Halomethanesmonthly averagereport only (ug/L)all yearINF1
Alpha gross radioactivitydaily maximumreport only (pCi/L)all yearINF1
Alpha gross radioactivitymonthly averagereport only (pCi/L)all yearINF1
Dichlorobenzenedaily maximumreport only (ug/L)all yearINF1
Dichlorobenzenemonthly averagereport only (ug/L)all yearINF1
TCDD equivalentsdaily maximumreport only (pg/L)all yearINF1
Gross betadaily maximumreport only (pCi/L)all yearINF1
Gross betamonthly averagereport only (pCi/L)all yearINF1

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/CA0054372 · MCP: https://passage-data.com/mcp