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Sewage treatment plant, major discharger, Eureka, California. NPDES permit CA0024449, in force until Oct 31, 2028. Last 12 months: over a limit 4 times (last June 2026), 2 of 7 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| May 2026 | Enterococci, 90th percentile | 291 CFU/100mL | ≤ 110 CFU/100mL | 165% |
| May 2026 | Enterococci, geometric mean | 38 CFU/100mL | ≤ 30 CFU/100mL | 27% |
| June 2026 | Enterococci, 90th percentile | 2420 CFU/100mL | ≤ 110 CFU/100mL | 2100% |
| June 2026 | Enterococci, geometric mean | 291 CFU/100mL | ≤ 30 CFU/100mL | 870% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year | EFF1 |
| Turbidity | monthly average | ≤ 75 NTU | all year | EFF1 |
| Turbidity | weekly average | ≤ 100 NTU | all year | EFF1 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | EFF1 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | EFF1 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year | EFF1 |
| pH | instantaneous minimum | ≥ 6 SU | all year | EFF1 |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | EFF1 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | EFF1 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | EFF1 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | EFF1 |
| Solids, settleable | monthly average | ≤ .1 mL/L | all year | EFF1 |
| Solids, settleable | daily maximum | ≤ .2 mL/L | all year | EFF1 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | EFF1 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | EFF1 |
| Cyanide, total [as CN] | monthly average | ≤ 12.76 ug/L | all year | EFF1 |
| Cyanide, total [as CN] | daily maximum | ≤ 32 ug/L | all year | EFF1 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | EFF1 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Thallium, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Beryllium, total recoverable [as Be] | daily maximum | report only (ug/L) | all year | EFF1 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year | EFF1 |
| Chromium, trivalent [as Cr] | daily maximum | report only (ug/L) | all year | EFF1 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| 2-Methyl-4,6-dinitrophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| Dichlorobromomethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Carbon tetrachloride | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,2-Dichloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Bromoform | daily maximum | report only (ug/L) | all year | EFF1 |
| Dibromochloromethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Chloroform | daily maximum | report only (ug/L) | all year | EFF1 |
| Toluene | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzene | daily maximum | report only (ug/L) | all year | EFF1 |
| .delta.-BHC | daily maximum | report only (ug/L) | all year | EFF1 |
| Acenaphthylene | daily maximum | report only (ug/L) | all year | EFF1 |
| Acenaphthene | daily maximum | report only (ug/L) | all year | EFF1 |
| Acrolein | daily maximum | report only (ug/L) | all year | EFF1 |
| Acrylonitrile | daily maximum | report only (ug/L) | all year | EFF1 |
| Anthracene | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzo[b]fluoranthene | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzo[k]fluoranthene | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzo[a]pyrene | daily maximum | report only (ug/L) | all year | EFF1 |
| Bis[2-chloroethyl] ether | daily maximum | report only (ug/L) | all year | EFF1 |
| Bis[2-chloroethoxy]methane | daily maximum | report only (ug/L) | all year | EFF1 |
| Bis[2-chloroisopropyl] ether | daily maximum | report only (ug/L) | all year | EFF1 |
| Butyl benzyl phthalate | daily maximum | report only (ug/L) | all year | EFF1 |
| Chlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| Chrysene | daily maximum | report only (ug/L) | all year | EFF1 |
| Diethyl phthalate | daily maximum | report only (ug/L) | all year | EFF1 |
| Dimethyl phthalate | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,2-Diphenylhydrazine | daily maximum | report only (ug/L) | all year | EFF1 |
| Endosulfan sulfate | daily maximum | report only (ug/L) | all year | EFF1 |
| .beta.-Endosulfan | daily maximum | report only (ug/L) | all year | EFF1 |
| .alpha.-Endosulfan | monthly average | ≤ .228 ug/L | all year | EFF1 |
| .alpha.-Endosulfan | daily maximum | ≤ .4573 ug/L | all year | EFF1 |
| .alpha.-Endosulfan | daily maximum | report only (ug/L) | all year | EFF1 |
| Endrin aldehyde | daily maximum | report only (ug/L) | all year | EFF1 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| Fluoranthene | daily maximum | report only (ug/L) | all year | EFF1 |
| Fluorene | daily maximum | report only (ug/L) | all year | EFF1 |
| Hexachlorocyclopentadiene | daily maximum | report only (ug/L) | all year | EFF1 |
| Hexachlorobutadiene | daily maximum | report only (ug/L) | all year | EFF1 |
| Hexachloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Indeno[1,2,3-cd]pyrene | daily maximum | report only (ug/L) | all year | EFF1 |
| Isophorone | daily maximum | report only (ug/L) | all year | EFF1 |
| Methyl bromide [Bromomethane] | daily maximum | report only (ug/L) | all year | EFF1 |
| Methyl chloride [Chloromethane] | daily maximum | report only (ug/L) | all year | EFF1 |
| Methylene chloride | daily maximum | report only (ug/L) | all year | EFF1 |
| N-Nitrosodi-N-propylamine | daily maximum | report only (ug/L) | all year | EFF1 |
| N-Nitrosodiphenylamine | daily maximum | report only (ug/L) | all year | EFF1 |
| N-Nitrosodimethylamine [NDMA] | daily maximum | report only (ug/L) | all year | EFF1 |
| Nitrobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| Phenanthrene | daily maximum | report only (ug/L) | all year | EFF1 |
| Pyrene | daily maximum | report only (ug/L) | all year | EFF1 |
| Tetrachloroethylene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,1-Dichloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,1-Dichloroethylene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,1,1-Trichloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,1,2-Trichloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,1,2,2-Tetrachloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzo[ghi]perylene | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzo[a]anthracene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,2-Dichlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,2-Dichloropropane | daily maximum | report only (ug/L) | all year | EFF1 |
| trans-1,2-Dichloroethylene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,2,4-Trichlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| Dibenz[a,h]anthracene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,3-Dichlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| 1,4-Dichlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| 2-Chloroethyl vinyl ether, [mixed] | daily maximum | report only (ug/L) | all year | EFF1 |
| 2-Chloronaphthalene | daily maximum | report only (ug/L) | all year | EFF1 |
| 2-Chlorophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| 2-Nitrophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| Di-n-octyl phthalate | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,4-Dichlorophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,4-Dimethylphenol | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,4-Dinitrotoluene | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,4-Dinitrophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,4,6-Trichlorophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,6-Dinitrotoluene | daily maximum | report only (ug/L) | all year | EFF1 |
| 3,3'-Dichlorobenzidine | daily maximum | report only (ug/L) | all year | EFF1 |
| 4-Bromophenyl phenyl ether | daily maximum | report only (ug/L) | all year | EFF1 |
| 4-Chlorophenyl phenyl ether | daily maximum | report only (ug/L) | all year | EFF1 |
| 4-Nitrophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1016 | daily maximum | report only (ug/L) | all year | EFF1 |
| 2,3,7,8-Tetrachlorodibenzo-p-dioxin | daily maximum | report only (ug/L) | all year | EFF1 |
| Phenol | daily maximum | report only (ug/L) | all year | EFF1 |
| Naphthalene | daily maximum | report only (ug/L) | all year | EFF1 |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year | EFF1 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (ug/L) | all year | EFF1 |
| Di-n-butyl phthalate | daily maximum | report only (ug/L) | all year | EFF1 |
| Benzidine | daily maximum | report only (ug/L) | all year | EFF1 |
| Vinyl chloride | daily maximum | report only (ug/L) | all year | EFF1 |
| Trichloroethylene | daily maximum | report only (ug/L) | all year | EFF1 |
| 4,4'-DDT | daily maximum | report only (ug/L) | all year | EFF1 |
| 4,4'-DDD | daily maximum | report only (ug/L) | all year | EFF1 |
| 4,4'-DDE | daily maximum | report only (ug/L) | all year | EFF1 |
| Aldrin | daily maximum | report only (ug/L) | all year | EFF1 |
| .alpha.-BHC | daily maximum | report only (ug/L) | all year | EFF1 |
| .beta.-BHC | daily maximum | report only (ug/L) | all year | EFF1 |
| .gamma.-BHC | daily maximum | report only (ug/L) | all year | EFF1 |
| Chlordane [tech mix. and metabolites] | daily maximum | report only (ug/L) | all year | EFF1 |
| Dieldrin | daily maximum | report only (ug/L) | all year | EFF1 |
| Endrin | daily maximum | report only (ug/L) | all year | EFF1 |
| Toxaphene | daily maximum | report only (ug/L) | all year | EFF1 |
| Heptachlor | daily maximum | report only (ug/L) | all year | EFF1 |
| Heptachlor epoxide | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1221 | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1232 | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1248 | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | EFF1 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | EFF1 |
| Hexachlorobenzene | daily maximum | report only (ug/L) | all year | EFF1 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | EFF1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | EFF1 |
| Chlorine, total residual | monthly average | ≤ 6.1 ug/L | all year | EFF1 |
| Chlorine, total residual | daily maximum | ≤ 12 ug/L | all year | EFF1 |
| Enterococci | geometric mean | ≤ 30 CFU/100mL | all year | EFF1 |
| Enterococci | 90th percentile | ≤ 110 CFU/100mL | all year | EFF1 |
| 4-Chloro-3-methylphenol | daily maximum | report only (ug/L) | all year | EFF1 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | EFF1 |
| Coliform, fecal general | monthly median | ≤ 14 MPN/100mL | all year | EFF1 |
| Coliform, fecal general | single sample | ≤ 43 MPN/100mL | all year | EFF1 |
| 1,3-Dichloropropene | daily maximum | report only (ug/L) | all year | EFF1 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | EFF1 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | EFF1 |
| Chloroethane | daily maximum | report only (ug/L) | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A bahia | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A bahia | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A bahia | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A affinis | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A affinis | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr A affinis | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinis | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinis | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinis | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr S purpuratus | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr S purpuratus | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr S purpuratus | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr D excentricus | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr D excentricus | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Stat72hr D excentricus | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus spp | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus spp | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr Mytilus spp | daily maximum | ≤ 50 % effect | all year | EFF1 |
| Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyrifera | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyrifera | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyrifera | daily maximum | ≤ 50 % effect | all year | EFF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF1 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF1 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF1 |
Cited limits by parameter: California's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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