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Niland County Sanitary District

Sewage treatment plant, Niland, California. NPDES permit CA0104451, in force until Jul 31, 2030. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall EFF1 form A monthly (32 values), outfall INF1 form A monthly (6 values), outfall EFF1 form Q quarterly, outfall EFF1 form S twice a year
Last report on file
None in EPA's file for the last 12 months; that may be EPA's gap, not the facility's

Limits in force (87)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all yearEFF1
Turbiditydaily maximumreport only (NTU)all yearEFF1
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearEFF1
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall yearEFF1
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall yearEFF1
BOD, 5-day, 20 deg. Cmonthly average≤ 188 lb/dall yearEFF1
BOD, 5-day, 20 deg. Cweekly average≤ 271 lb/dall yearEFF1
pHinstantaneous minimum≥ 6 SUall yearEFF1
pHinstantaneous maximum≤ 9 SUall yearEFF1
Solids, total suspendedmonthly average≤ 56 mg/Lall yearEFF1
Solids, total suspendedweekly average≤ 84 mg/Lall yearEFF1
Solids, total suspendedmonthly average≤ 233 lb/dall yearEFF1
Solids, total suspendedweekly average≤ 350 lb/dall yearEFF1
Oil & Greasedaily maximum≤ 25 mg/Lall yearEFF1
Oil & Greasedaily maximum≤ 104 lb/dall yearEFF1
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/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
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearEFF1
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all yearEFF1
Selenium, total recoverablemonthly average≤ 4.08 ug/Lall yearEFF1
Selenium, total recoverabledaily maximum≤ 8.19 ug/Lall yearEFF1
Selenium, total recoverablemonthly average≤ .017 lb/dall yearEFF1
Selenium, total recoverabledaily maximum≤ .034 lb/dall yearEFF1
Zinc, total recoverablemonthly average≤ 188.7 ug/Lall yearEFF1
Zinc, total recoverabledaily maximum≤ 378.7 ug/Lall yearEFF1
Zinc, total recoverablemonthly average≤ .787 lb/dall yearEFF1
Zinc, total recoverabledaily maximum≤ 1.579 lb/dall yearEFF1
Phosphate, ortho [as P]daily maximumreport only (mg/L)all yearEFF1
Chlorpyrifosinstantaneous maximum≤ .015 ug/Lall yearEFF1
Chlorpyrifosinstantaneous maximum≤ .000063 lb/dall yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 5.9 ug/Lall yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 11.86 ug/Lall yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .0246 lb/dall yearEFF1
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .0495 lb/dall yearEFF1
4,4'-DDTinstantaneous maximum≤ .00059 ug/Lall yearEFF1
4,4'-DDTinstantaneous maximum≤ .000002 lb/dall yearEFF1
4,4'-DDDinstantaneous maximum≤ .00084 ug/Lall yearEFF1
4,4'-DDDinstantaneous maximum≤ .000004 lb/dall yearEFF1
4,4'-DDEinstantaneous maximum≤ .00059 ug/Lall yearEFF1
4,4'-DDEinstantaneous maximum≤ .000002 lb/dall yearEFF1
Chlordane [tech mix. and metabolites]instantaneous maximum≤ .00059 ug/Lall yearEFF1
Chlordane [tech mix. and metabolites]instantaneous maximum≤ .000002 lb/dall yearEFF1
Dieldrininstantaneous maximum≤ .00014 ug/Lall yearEFF1
Dieldrininstantaneous maximum≤ .0000006 lb/dall yearEFF1
PCB-1221instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1221instantaneous maximum≤ .00000071 lb/dall yearEFF1
PCB-1232instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1232instantaneous maximum≤ .00000071 lb/dall yearEFF1
PCB-1242instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1242instantaneous maximum≤ .00000071 lb/dall yearEFF1
PCB-1248instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1248instantaneous maximum≤ .00000071 lb/dall yearEFF1
PCB-1254instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1254instantaneous maximum≤ .00000071 lb/dall yearEFF1
PCB-1260instantaneous maximum≤ .00017 ug/Lall yearEFF1
PCB-1260instantaneous maximum≤ .00000071 lb/dall yearEFF1
Malathioninstantaneous maximum≤ .028 ug/Lall yearEFF1
Malathioninstantaneous maximum≤ .000117 lb/dall yearEFF1
Diazinoninstantaneous maximum≤ .1 ug/Lall yearEFF1
Diazinoninstantaneous maximum≤ .000417 lb/dall yearEFF1
Flow, in conduit or thru treatment plantmonthly average≤ .5 MGDall yearEFF1
Flow, in conduit or thru treatment plantdaily maximum≤ .5 MGDall yearEFF1
Chlorine, total residualmonthly average≤ .01 mg/Lall yearEFF1
Chlorine, total residualinstantaneous maximum≤ .02 mg/Lall yearEFF1
Chlorine, total residualmonthly average≤ .04 lb/dall yearEFF1
E. coligeometric mean≤ 100 CFU/100mLall yearEFF1
E. coli90th percentile≤ 320 CFU/100mLall yearEFF1
Solids, total dissolveddaily maximumreport only (mg/L)all yearEFF1
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all yearEFF1
Solids, suspended percent removalmonthly average minimum≥ 65 %all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasmonthly median≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 50 % effectall yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiadaily maximum≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiamonthly median≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiadaily maximum≤ 50 % effectall yearEFF1
Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitatadaily maximum≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitatamonthly median≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitatadaily maximum≤ 50 % effectall yearEFF1
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearINF1
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/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/CA0104451 · MCP: https://passage-data.com/mcp