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Sewage treatment plant, major discharger, Elk Grove, California. NPDES permit CA0077682, in force until Jul 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | instantaneous maximum | report only (deg F) | all year | EFF1 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | EFF1 |
| Oxygen, dissolved [DO] | instantaneous minimum | report only (mg/L) | all year | EFF1 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year | EFF1 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 15 mg/L | all year | EFF1 |
| pH | instantaneous minimum | ≥ 6 SU | all year | EFF1 |
| pH | instantaneous maximum | ≤ 8 SU | all year | EFF1 |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year | EFF1 |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year | EFF1 |
| Solids, total suspended | weekly average | ≤ 15 mg/L | all year | EFF1 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | Jan, Feb, Mar, Nov, Dec | EFF1 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.1 mg/L | Apr–Oct | EFF1 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.2 mg/L | Jan, Feb, Mar, Nov, Dec | EFF1 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 2.6 mg/L | Apr–Oct | EFF1 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | EFF1 |
| Nitrite + Nitrate total [as N] | monthly average | ≤ 16.1 mg/L | all year | EFF1 |
| Nitrite + Nitrate total [as N] | weekly average | ≤ 22 mg/L | all year | EFF1 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | EFF1 |
| Carbon, dissolved organic [as C] | daily maximum | report only (mg/L) | all year | EFF1 |
| Cyanide, total [as CN] | monthly average | ≤ 11 ug/L | all year | EFF1 |
| Cyanide, total [as CN] | daily maximum | ≤ 22 ug/L | all year | EFF1 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | EFF1 |
| Dichlorobromomethane | monthly average | ≤ 47 ug/L | all year | EFF1 |
| Dichlorobromomethane | daily maximum | ≤ 77 ug/L | all year | EFF1 |
| Dibromochloromethane | monthly average | ≤ 34 ug/L | all year | EFF1 |
| Dibromochloromethane | daily maximum | ≤ 64 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 | 4-day average | ≤ .011 mg/L | all year | EFF1 |
| Chlorine, total residual | 1-hour average | ≤ .019 mg/L | all year | EFF1 |
| Sodium Bisulfite | daily maximum | report only (mg/L) | all year | EFF1 |
| Temperature Increase Deg. F | instantaneous maximum | ≤ 20 deg F | May–Sep | EFF1 |
| Temperature Increase Deg. F | instantaneous maximum | ≤ 25 deg F | Jan, Feb, Mar, Apr, Oct, Nov, Dec | EFF1 |
| Giardia | daily maximum | report only (#/100mL) | all year | EFF1 |
| Cryptosporidium | daily maximum | report only (#/100mL) | all year | EFF1 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | EFF1 |
| Mercury, total recoverable | daily maximum | report only (ng/L) | all year | EFF1 |
| Coliform, total general | instantaneous maximum | ≤ 240 MPN/100mL | May–Oct | EFF1 |
| Coliform, total general | instantaneous maximum | ≤ 240 MPN/100mL | Jan, Feb, Mar, Apr, Nov, Dec | EFF1 |
| Coliform, total general | 7-day median | ≤ 2.2 MPN/100mL | May–Oct | EFF1 |
| Coliform, total general | monthly median | ≤ 2.2 MPN/100mL | Jan, Feb, Mar, Apr, Nov, Dec | EFF1 |
| Coliform, total general | 30-day maximum | ≤ 23 MPN/100mL | May–Oct | EFF1 |
| Coliform, total general | 7-day median | ≤ 23 MPN/100mL | Jan, Feb, Mar, Apr, Nov, Dec | EFF1 |
| Methylmercury | daily maximum | report only (ng/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 |
| Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia | monthly median | ≤ 0 pass=0;fail=1 | all year | EFF1 |
| Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia | daily maximum | ≤ 50 % effect | all year | EFF1 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF1 |
| pH | instantaneous minimum | report only (SU) | all year | INF1 |
| pH | instantaneous maximum | report only (SU) | 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 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Diazinon + Chlorpyrifos, monthly average | 1 ug/L | new | — | — |
| Diazinon + Chlorpyrifos, weekly average | 1 ug/L | new | — | — |
| Mercury, total recoverable, annual total | 1043 g/yr | new | — | — |
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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