Calaveras County Water District

NPDES permit CA0085278 · Minor POTW · effective, expires 2030-01-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

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

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 (38)

OutfallParameterStatisticLimitMonths
EFF1Temperature, water deg. fahrenheitINST MAX report only all year
EFF1Specific conductanceDAILY MX report only all year
EFF1Oxygen, dissolved [DO]MO AVG report only all year
EFF1Oxygen, dissolved [DO]DAILY MX 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
EFF1pHINST MIN >= 6.5 SU all year
EFF1pHINST MAX <= 8.5 SU all year
EFF1Solids, total suspendedMO AVG <= 10 mg/L all year
EFF1Solids, total suspendedWKLY AVG <= 15 mg/L all year
EFF1Nitrogen, ammonia total [as N]MO AVG <= 28 mg/L all year
EFF1Nitrogen, ammonia total [as N]WKLY AVG <= 64 mg/L all year
EFF1Nitrogen, ammonia total [as N]MO AVG <= 200 lb/d all year
EFF1Nitrogen, ammonia total [as N]WKLY AVG <= 450 lb/d all year
EFF1Nitrite + Nitrate total [as N]MO AVG <= 40 mg/L all year
EFF1Nitrite + Nitrate total [as N]WKLY AVG <= 84 mg/L all year
EFF1Hardness, total [as CaCO3]DAILY MX report only all year
EFF1Copper, total [as Cu]MO AVG <= 9.2 ug/L all year
EFF1Copper, total [as Cu]DAILY MX <= 18 ug/L all year
EFF1Zinc, total [as Zn]MO AVG <= 100 ug/L all year
EFF1Zinc, total [as Zn]DAILY MX <= 210 ug/L all year
EFF1Chlorine, total residualMO AVG report only all year
EFF1Chlorine, total residualDAILY MX report only all year
EFF1Coliform, total generalINST MAX <= 240 MPN/100mL all year
EFF1Coliform, total general7C <= 2.2 MPN/100mL all year
EFF1Coliform, total general3E <= 23 MPN/100mL all year
EFF1FlowMO AVG report only all year
EFF1FlowDAILY MX report only all year
EFF1BOD, 5-day, percent removalMO AV MN >= 85 % all year
EFF1Solids, suspended percent removalMO AV MN >= 85 % 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
INF1FlowMO AVG report only all year
INF1FlowDAILY 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