Shasta County Service Area No. 17

NPDES permit CA0081507 · Minor POTW · effective, expires 2029-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

0values over a limit
0required values missing, on 0 form(s)
1of 21 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 31 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (71)

OutfallParameterStatisticLimitMonths
EFF1Temperature, water deg. centigradeINST MAX report only all year
EFF1TurbidityMO AVG report only all year
EFF1TurbidityDAILY MX report only all year
EFF1Specific conductanceDAILY MX report only all year
EFF1Oxygen, dissolved [DO]INST MIN report only all year
EFF1BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
EFF1BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
EFF1BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L all year
EFF1pHINST MIN >= 6.5 SU all year
EFF1pHINST MAX <= 8.5 SU all year
EFF1Alkalinity, total [as CaCO3]DAILY MX report only all year
EFF1Solids, total suspendedMO AVG <= 10 mg/L all year
EFF1Solids, total suspendedWKLY AVG <= 15 mg/L all year
EFF1Solids, total suspendedDAILY MX <= 30 mg/L all year
EFF1Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L all year
EFF1Nitrogen, ammonia total [as N]WKLY AVG <= 4.4 mg/L all year
EFF1Nitrogen, nitrite total [as N]DAILY MX report only all year
EFF1Nitrogen, nitrate total [as N]DAILY MX report only all year
EFF1Nitrite + Nitrate total [as N]MO AVG <= 72 mg/L all year
EFF1Nitrite + Nitrate total [as N]WKLY AVG <= 138 mg/L all year
EFF1Phosphorus, total [as P]DAILY MX report only all year
EFF1Hardness, total [as CaCO3]DAILY MX report only all year
EFF1Calcium, total recoverableDAILY MX report only all year
EFF1Magnesium, total recoverableDAILY MX report only all year
EFF1Sodium, total recoverableDAILY MX report only all year
EFF1Potassium, total recoverableDAILY MX report only all year
EFF1Chloride [as Cl]DAILY MX report only all year
EFF1Iron, total recoverableDAILY MX report only all year
EFF1Boron, total recoverableDAILY MX report only all year
EFF1Zinc, total recoverableMO AVG <= 37 ug/L all year
EFF1Zinc, total recoverableMO AVG <= 101 ug/L all year
EFF1Zinc, total recoverableDAILY MX <= 68 ug/L all year
EFF1Zinc, total recoverableDAILY MX <= 172 ug/L all year
EFF1Copper, total recoverableMO AVG <= 14 ug/L all year
EFF1Copper, total recoverableMO AVG <= 24 ug/L all year
EFF1Copper, total recoverableDAILY MX <= 25 ug/L all year
EFF1Copper, total recoverableDAILY MX <= 55 ug/L all year
EFF1Manganese, total recoverableDAILY MX report only all year
EFF1DichlorobromomethaneMO AVG <= 8.8 ug/L all year
EFF1DichlorobromomethaneMO AVG <= 14 ug/L all year
EFF1DichlorobromomethaneDAILY MX <= 22 ug/L all year
EFF1DichlorobromomethaneDAILY MX <= 37 ug/L all year
EFF1DibromochloromethaneMO AVG <= 5 ug/L all year
EFF1DibromochloromethaneDAILY MX <= 15 ug/L all year
EFF1ChlorpyrifosDAILY MX report only all year
EFF1DiazinonDAILY MX report only all year
EFF1Flow, in conduit or thru treatment plantMO AVG report only all year
EFF1Flow, in conduit or thru treatment plantDAILY MX report only all year
EFF1Chlorine, total residual4A <= .011 mg/L all year
EFF1Chlorine, total residual1I <= .019 mg/L all year
EFF1Diazinon + ChlorpyrifosMO AVG <= 1 ug/L all year
EFF1Diazinon + ChlorpyrifosWKLY AVG <= 1 ug/L all year
EFF1Coliform, total general7C <= 23 MPN/100mL all year
EFF1Coliform, total general3E <= 240 MPN/100mL all year
EFF1BOD, 5-day, percent removalMO AV MN >= 85 % all year
EFF1Solids, suspended percent removalMO AV MN >= 85 % all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissDAILY MX <= 0 pass=0;fail=1 all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissMO MED <= 0 pass=0;fail=1 all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissDAILY MX <= 50 % effect all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMO MED <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaDAILY MX <= 50 % effect all year
INF1Specific conductanceDAILY MX report only all year
INF1BOD, 5-day, 20 deg. CMO AVG report only all year
INF1BOD, 5-day, 20 deg. CDAILY MX report only all year
INF1pHINST MIN report only all year
INF1pHINST MAX report only all year
INF1Solids, total suspendedMO AVG report only all year
INF1Solids, total suspendedDAILY MX report only all year
INF1Flow, in conduit or thru treatment plantMO AVG report only all year
INF1Flow, in conduit or thru treatment plantDAILY MX report only all year

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