Alturas, City of

NPDES permit CA0078921 · Minor POTW · expired, expires 2025-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2025-03-31 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

25values over a limit
0required values missing, on 0 form(s)
3of 49 forms filed late

Last period with anything received: 2026-07-31. Most often over: Aluminum, total recoverable (14), Copper, total recoverable (3), BOD, 5-day, 20 deg. C (2).

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 (84)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeINST MAX report only all year
001TurbidityMO AVG report only all year
001TurbidityDAILY MX report only all year
001Specific conductanceMO AVG report only all year
001Specific conductanceANNL AVG <= 1030 umho/cm all year
001Specific conductanceANNL AVG <= 1030 umho/cm all year
001Specific conductanceDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 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 <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 37 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 52 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 155 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 220 lb/d all year
001Nitrogen, nitrite total [as N]MO AVG report only all year
001Nitrogen, nitrite total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Carbon, dissolved organic [as C]MO AVG report only all year
001Carbon, dissolved organic [as C]DAILY MX report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Arsenic, total recoverableMO AVG <= 18 ug/L all year
001Arsenic, total recoverableDAILY MX <= 22 ug/L all year
001Zinc, total recoverableMO AVG <= 26 ug/L all year
001Zinc, total recoverableDAILY MX <= 40 ug/L all year
001Aluminum, total recoverableMO AVG <= 290 ug/L all year
001Aluminum, total recoverableMO AVG <= 2500 ug/L all year
001Aluminum, total recoverableWKLY AVG <= 370 ug/L all year
001Aluminum, total recoverableWKLY AVG <= 4600 ug/L all year
001Copper, total recoverableMO AVG <= 6.7 ug/L all year
001Copper, total recoverableDAILY MX <= 15 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 10.6 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 16.6 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
001Chlorine, total residual4A <= .011 mg/L all year
001Chlorine, total residual1I <= .019 mg/L all year
001Nitrite Plus Nitrate TotalMO AVG <= 10 mg/L all year
001Nitrite Plus Nitrate TotalWKLY AVG <= 15 mg/L all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total general7C <= 23 MPN/100mL all year
001Coliform, total general7C <= 23 MPN/100mL all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total general3E <= 240 MPN/100mL all year
001Coliform, total generalINST MAX <= 240 MPN/100mL all year
001Coliform, total generalDAILY MX <= 500 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001%Effect Static 4 Day Chronic Raphidocelis subcapitataMO MED <= 25 % effect all year
001%Effect Static 4 Day Chronic Raphidocelis subcapitataMO MED <= 25 % effect all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO MED <= 25 % effect all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO MED <= 25 % effect all year
001%Effect Static Renewal 7Day Chronic Pimephales promelasMO MED <= 25 % effect all year
001%Effect Static Renewal 7Day Chronic Pimephales promelasMO MED <= 25 % effect all year
001% Survival Static Renewal 96Hr Acute Pimephales promelasMINIMUM >= 70 % survival all year
001% Survival Static Renewal 96Hr Acute Pimephales promelasBA >= 90 % survival all year
001% Survival Flow Through 96Hr Acute Pimephales promelasMINIMUM >= 70 % survival all year
001% Survival Flow Through 96Hr Acute Pimephales promelasBA >= 90 % survival all year
001TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)DAILY MX <= 16 toxic all year
001TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)DAILY MX <= 16 toxic all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaDAILY MX <= 16 toxic all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaDAILY MX <= 16 toxic all year
001TU Static Renewal 7-Day Chronic Pimphales promelasDAILY MX <= 16 toxic all year
001TU Static Renewal 7-Day Chronic Pimphales promelasDAILY MX <= 16 toxic 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