El Dorado, City of - South Plant

NPDES permit AR0033723 · Major POTW · effective, expires 2028-12-31 · EPA's file as of 2026-09-19

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EPA's record, 2025-09-01 to 2026-08-31

10values over a limit
0required values missing, on 0 form(s)
5of 82 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (10).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (223)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade7 DA AVG report only Apr, May
001Oxygen, dissolved [DO]MO AV MN >= 5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Oxygen, dissolved [DO]MO AV MN >= 3 mg/L May, Jun, Jul, Aug, Sep, Oct
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspended7 DA AVG <= 22.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspended7 DA AVG <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 875.7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 1751.4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 10.2 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 10.2 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 9.73 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 8.55 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 6.6 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 7.08 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 5.8 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 6.23 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 17 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.1 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5.03 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 4.42 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4.74 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 3.89 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4.17 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 3.42 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 3.66 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 3.22 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 2.64 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 2.83 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 2.32 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 2.49 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 6.8 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.4 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 10.2 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 10.2 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 9.73 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 8.55 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.6 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.08 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.8 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.23 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 17 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.1 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 12.58 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 11.05 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 9.73 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 8.55 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.6 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.08 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.8 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.23 mg/L May
001Nitrogen, ammonia total [as N]7 DA AVG <= 17 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 6.1 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 595.5 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 595.5 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 568.1 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 499.2 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 437.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 385.3 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 413.3 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 338.6 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 363.7 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 992.5 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 356.1 lb/d Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 293.7 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 291.9 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 258 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 276.7 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 227.1 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 243.4 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 199.7 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 213.7 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 175.1 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 188 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 154.1 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 165.2 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 135.4 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 145.4 lb/d May
001Nitrogen, ammonia total [as N]MO AVG <= 397 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 140.2 lb/d Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]7 DA AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Selenium, total recoverableMO AVG <= 5.58 ug/L all year
001Selenium, total recoverable7 DA AVG <= 11.2 ug/L all year
001Selenium, total recoverableMO AVG <= .33 lb/d all year
001Copper, total recoverableMO AVG <= 12.2 ug/L all year
001Copper, total recoverable7 DA AVG <= 24.48 ug/L all year
001Copper, total recoverableMO AVG <= .71 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverable7 DA AVG report only all year
001Mercury, total recoverableMO AVG report only all year
001Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal general30DA GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001OverflowsMO TOTAL report only all year
001Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
001Cyanide, total recoverableMO AVG <= 5.8 ug/L all year
001Cyanide, total recoverable7 DA AVG <= 11.64 ug/L all year
001Cyanide, total recoverableMO AVG <= .34 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 37.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1459.5 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 583.8 lb/d May, Jun, Jul, Aug, Sep, Oct
010SOxygen, dissolved [DO]INST MIN report only all year
010SpHMINIMUM >= 6 SU all year
010SpHMAXIMUM <= 9 SU all year
010SSolids, total suspendedMO AVG <= 30 mg/L all year
010SSolids, total suspendedDAILY MX <= 45 mg/L all year
010SSolids, total suspendedMO AVG <= 1751.4 lb/d all year
010SSolids, total suspendedDAILY MX <= 2627.1 lb/d all year
010SOil & GreaseMO AVG <= 583.8 lb/d all year
010SOil & GreaseDAILY MX <= 875.7 lb/d all year
010SNitrogen, ammonia total [as N]MO AVG <= 496.3 lb/d May, Jun, Jul, Aug, Sep, Oct
010SNitrogen, ammonia total [as N]MO AVG <= 1605.5 lb/d Jan, Feb, Mar, Apr, Nov, Dec
010SNitrogen, ammonia total [as N]DAILY MX <= 624 lb/d May, Jun, Jul, Aug, Sep, Oct
010SNitrogen, ammonia total [as N]DAILY MX <= 2287 lb/d Jan, Feb, Mar, Apr, Nov, Dec
010SPhosphorus, total [as P]MO AVG report only all year
010SPhosphorus, total [as P]DAILY MX report only all year
010SChloride [as Cl]MO AVG report only all year
010SChloride [as Cl]DAILY MX report only all year
010SSelenium, total recoverableMO AVG <= 2.3 lb/d all year
010SSelenium, total recoverableDAILY MX <= 4.62 lb/d all year
010SNickel, total recoverableMO AVG <= 49.81 lb/d all year
010SNickel, total recoverableDAILY MX <= 99.93 lb/d all year
010SSilver total recoverableMO AVG <= .27 lb/d all year
010SSilver total recoverableDAILY MX <= .55 lb/d all year
010SZinc, total recoverableMO AVG <= 25.73 lb/d all year
010SZinc, total recoverableDAILY MX <= 51.63 lb/d all year
010SCadmium, total recoverableMO AVG <= .78 lb/d all year
010SCadmium, total recoverableDAILY MX <= 1.56 lb/d all year
010SLead, total recoverableMO AVG <= 1.4 lb/d all year
010SLead, total recoverableDAILY MX <= 2.8 lb/d all year
010SCopper, total recoverableMO AVG <= 2.88 lb/d all year
010SCopper, total recoverableDAILY MX <= 5.78 lb/d all year
010SChromium, hexavalent dissolved [as Cr]MO AVG <= 3.37 lb/d all year
010SChromium, hexavalent dissolved [as Cr]DAILY MX <= 6.76 lb/d all year
010SChromium, trivalent total recoverableMO AVG <= 138.31 lb/d all year
010SChromium, trivalent total recoverableDAILY MX <= 277.5 lb/d all year
010SFlow, in conduit or thru treatment plantMO AVG report only all year
010SFlow, in conduit or thru treatment plantDAILY MX <= 7 MGD all year
010SSolids, total dissolvedMO AVG report only all year
010SSolids, total dissolvedDAILY MX report only all year
010SMercury, total recoverableDAILY MX < .19 ug/L all year
010SColiform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep
010SColiform, fecal general30DA GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
010SColiform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep
010SColiform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
010SCyanide, total recoverableMO AVG <= 2.39 lb/d all year
010SCyanide, total recoverableDAILY MX <= 4.81 lb/d all year
010SBOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
010SBOD, carbonaceous [5 day, 20 C]MO AVG <= 22.5 mg/L May, Jun, Jul, Aug, Sep, Oct
010SBOD, carbonaceous [5 day, 20 C]DAILY MX <= 39 mg/L Jan, Feb, Mar, Apr, Nov, Dec
010SBOD, carbonaceous [5 day, 20 C]DAILY MX <= 33.8 mg/L May, Jun, Jul, Aug, Sep, Oct
010SBOD, carbonaceous [5 day, 20 C]MO AVG <= 1323.47 lb/d Jan, Feb, Mar, Apr, Nov, Dec
010SBOD, carbonaceous [5 day, 20 C]MO AVG <= 1119.17 lb/d May, Jun, Jul, Aug, Sep, Oct
010SBOD, carbonaceous [5 day, 20 C]DAILY MX <= 1985.15 lb/d Jan, Feb, Mar, Apr, Nov, Dec
010SBOD, carbonaceous [5 day, 20 C]DAILY MX <= 1678.75 lb/d May, Jun, Jul, Aug, Sep, Oct
010SSulfateMO AVG report only all year
010SSulfateDAILY MX report only all year
TX1WET, sublethal retest #17 DA AVG report only all year
TX1WET, sublethal retest #27 DA AVG report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #37 DA AVG report only all year
TX1Whole Effluent Toxicity [WET] - C. dubia7 DA AVG < 100 % all year
TX1Whole Effluent Toxicity [WET] - C. dubia7 DA AVG < 80 % all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA AVG report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA AVG report only all year
TX1SWhole effluent toxicity - retest #17 DA MIN report only all year
TX1SWhole effluent toxicity - retest #27 DA MIN report only all year
TX1SWET, sublethal retest #17 DA MIN report only all year
TX1SWET, sublethal retest #27 DA MIN report only all year
TX1SWhole Effluent Toxicity - Retest #37 DA MIN report only all year
TX1SWhole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX1SPass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1SPass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX1SLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1SLow Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1SNOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1SNOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1SNOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1SNOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1SCoef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1SCoef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year

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