Shasta Lake, City of

NPDES permit CA0079511 · Major POTW · expired, expires 2026-01-31 · 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.

This permit expired on 2026-01-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

8values over a limit
0required values missing, on 0 form(s)
5of 27 forms filed late

Last period with anything received: 2026-07-31. Most often over: Zinc, total recoverable (8).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (53)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only all year
001TurbidityMO AVG report only all year
001TurbidityDAILY MX report only all year
001Specific conductanceANNL AVG <= 480 umho/cm all year
001Specific conductanceANNL AVG <= 480 umho/cm all year
001Specific conductanceDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= .73 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 1.58 mg/L all year
001Nitrogen, nitrite total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG <= 10 mg/L all year
001Nitrite + Nitrate total [as N]WKLY AVG <= 18 mg/L all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Iron, total recoverableDAILY MX report only all year
001Iron, total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG <= 30 ug/L all year
001Zinc, total recoverableDAILY MX <= 40 ug/L 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
001Solids, total dissolvedDAILY MX report only all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total generalINST MAX <= 240 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001%Surv Static Renewal 96Hr Oncorhynchus mykissMINIMUM >= 70 % survival all year
001%Surv Static Renewal 96Hr Oncorhynchus mykissBA >= 90 % survival all year
001% Survival Flow Through 96Hr Acute Oncorhynchus mykissMINIMUM >= 70 % survival all year
001% Survival Flow Through 96Hr Acute Oncorhynchus mykissBA >= 90 % survival all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMAXIMUM report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataVALUE report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataVALUE report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataMAXIMUM report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataMAXIMUM report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedDAILY MX report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states