Liberty Utilities (Sub) Corp.

NPDES permit AZ0026425 · Major NON-POTW · effective, expires 2028-04-19 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 29 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among AZ permits in EPA's filings — check your permit).

Limits in force (79)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 500 kg/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 749 kg/d all year
001pHMINIMUM report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM report only all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 500 kg/d all year
001Solids, total suspendedWKLY AVG <= 749 kg/d all year
001Oil & GreaseMO AVG report only all year
001Oil & GreaseDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]MO AVG report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Arsenic, total recoverableMO AVG report only all year
001Arsenic, total recoverableDAILY MX report only all year
001Arsenic, total recoverableDAILY MX report only all year
001Selenium, total recoverableMO AVG report only all year
001Selenium, total recoverableDAILY MX report only all year
001Selenium, total recoverableDAILY MX report only all year
001Boron, total recoverableMO AVG report only all year
001Boron, total recoverableDAILY MX report only all year
001Boron, total recoverableDAILY MX report only all year
001Boron, total recoverableDAILY MX report only all year
001Chromium, total [as Cr]MO AVG report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Cadmium, total recoverableMO AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001Manganese, total recoverableDAILY MX report only all year
0011,1,1-TrichloroethaneDAILY MX report only all year
001BenzidineDAILY MX report only all year
0014,4'-DDTDAILY MX report only all year
0014,4'-DDDDAILY MX report only all year
0014,4'-DDEDAILY MX report only all year
001AldrinDAILY MX report only all year
001DieldrinDAILY MX report only all year
001EndrinDAILY MX report only all year
001ToxapheneDAILY MX report only all year
0012,4-Dichlorophenoxyacetic acidDAILY MX report only 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 residualDAILY MX report only all year
001E. coli, colony forming units [CFU]MO AVG <= 126 CFU/100mL all year
001E. coli, colony forming units [CFU]DAILY MX report only all year
001E. coli, colony forming units [CFU]DAILY MX <= 575 CFU/100mL all year
001Solids, total dissolvedDAILY MX report only all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverableDAILY MX report only all year
001Mercury, total recoverableDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CWKLY AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedWKLY 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