PORTOLA, CITY OF

NPDES permit CA0077844 · 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

6values over a limit
0required values missing, on 0 form(s)
10of 34 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, percent removal (3), Solids, suspended percent removal (2), Copper, total recoverable (1).

Reporting

Reports are due about 32 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (72)

OutfallParameterStatisticLimitMonths
EFF1Chlorine, total residualDAILY MX report only all year
EFF1Chlorine, total residualMO AVG report only all year
EFF1Coliform, total colony forming unitsDAILY MX report only all year
EFF1Coliform, total colony forming unitsMO AVG report only all year
EFF2Temperature, water deg. centigradeDAILY MX report only all year
EFF2Temperature, water deg. centigradeMO AVG report only all year
EFF2ConductivityDAILY MX report only all year
EFF2ConductivityMO AVG report only all year
EFF2BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
EFF2BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
EFF2pHDAILY MX <= 6 SU all year
EFF2pHINST MAX <= 9 SU all year
EFF2Alkalinity, total [as CaCO3]INST MAX report only all year
EFF2Alkalinity, bicarbonate [as CaCO3]DAILY MX report only all year
EFF2Alkalinity, carbonate [as CaCO3]MO AVG report only all year
EFF2Alkalinity, carbonate [as CaCO3]DAILY MX report only all year
EFF2Solids, total suspendedDAILY MX <= 45 mg/L all year
EFF2Solids, total suspendedWKLY AVG <= 65 mg/L all year
EFF2Nitrogen, total [as N]MO AVG report only all year
EFF2Nitrogen, ammonia total [as N]DAILY MX <= 18 mg/L all year
EFF2Nitrogen, ammonia total [as N]WKLY AVG <= 29 mg/L all year
EFF2Nitrite + Nitrate total [as N]DAILY MX <= 20 mg/L all year
EFF2Nitrite + Nitrate total [as N]WKLY AVG <= 37 mg/L all year
EFF2Phosphorous, total recoverableMO AVG report only all year
EFF2Phosphorous, total recoverableDAILY MX report only all year
EFF2Carbon, dissolved organic [as C]DAILY MX report only all year
EFF2Carbon, dissolved organic [as C]MO AVG report only all year
EFF2Hardness, total [as CaCO3]DAILY MX report only all year
EFF2Hardness, total [as CaCO3]MO AVG report only all year
EFF2Calcium, total recoverableDAILY MX report only all year
EFF2Magnesium, total recoverableDAILY MX report only all year
EFF2Sodium, total recoverableDAILY MX report only all year
EFF2Potassium, total recoverableDAILY MX report only all year
EFF2Chloride, total recoverableDAILY MX report only all year
EFF2Iron, total recoverableDAILY MX report only all year
EFF2Iron, total recoverableMO AVG report only all year
EFF2Boron, total recoverableDAILY MX report only all year
EFF2Copper, dissolved [as Cu]DAILY MX report only all year
EFF2Copper, dissolved [as Cu]MO AVG report only all year
EFF2Iron, dissolved [as Fe]DAILY MX report only all year
EFF2Iron, dissolved [as Fe]MO AVG report only all year
EFF2Manganese, dissolved [as Mn]DAILY MX report only all year
EFF2Manganese, dissolved [as Mn]MO AVG report only all year
EFF2Aluminum, total recoverableDAILY MX report only all year
EFF2Aluminum, total recoverableMO AVG report only all year
EFF2Aluminum, dissolved [as Al]DAILY MX report only all year
EFF2Aluminum, dissolved [as Al]MO AVG report only all year
EFF2Copper, total recoverableMO AVG <= 22 ug/L all year
EFF2Copper, total recoverableDAILY MX <= 44 ug/L all year
EFF2Manganese, total recoverableDAILY MX report only all year
EFF2Manganese, total recoverableMO AVG report only all year
EFF2HydroxideMO AVG report only all year
EFF2HydroxideDAILY MX report only all year
EFF2FlowDAILY MX report only all year
EFF2FlowMO AVG report only all year
EFF2BOD, 5-day, percent removalMO AVG <= 65 % all year
EFF2Solids, suspended percent removalMO AVG <= 65 % all year
EFF2%Effect Static Renewal 96Hr Acute Pimephales promelasDAILY MX report only all year
EFF2%Effect Static Renewal 96Hr Acute Oncorhynchus mykissMO AVG report only all year
EFF2%Effect Static Renewal 96Hr Acute Oncorhynchus mykissDAILY MX <= 120 % effect all year
EFF2Pass/Fail Static Renewal 96Hr Acute Oncorhynchus mykissDAILY MX report only all year
EFF2Pass/Fail Static Renewal 7Day Chronic Pimephales promelasDAILY MX report only all year
INF1ConductivityDAILY MX report only all year
INF1ConductivityMO AVG report only all year
INF1BOD, 5-day, 20 deg. CDAILY MX report only all year
INF1BOD, 5-day, 20 deg. CMO AVG report only all year
INF1pHDAILY MX report only all year
INF1pHMO AVG report only all year
INF1Solids, total suspendedDAILY MX report only all year
INF1Solids, total suspendedMO AVG report only all year
INF1FlowDAILY MX report only all year
INF1FlowMO AVG 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