City Of Somerton

NPDES permit AZ0026603 · Major POTW · effective, expires 2029-12-17 · 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 22 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (30)

OutfallParameterStatisticLimitMonths
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. CMO AVG <= 204 kg/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 307 kg/d all year
001pHMINIMUM >= 6.5 SU 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 suspendedMO AVG <= 204 kg/d all year
001Solids, total suspendedWKLY AVG <= 307 kg/d all year
001Oil & GreaseMO AVG report only all year
001Oil & GreaseDAILY MX report only all year
001Boron, total recoverableMO AVG <= 1000 ug/L all year
001Boron, total recoverableDAILY MX <= 2000 ug/L all year
001Boron, total recoverableMO AVG <= 7000 g/d all year
001Boron, total recoverableDAILY MX <= 10000 g/d all year
001Cadmium, total recoverableMO AVG <= 50 ug/L all year
001Cadmium, total recoverableDAILY MX <= 140 ug/L all year
001Cadmium, total recoverableMO AVG <= 340 g/d all year
001Cadmium, total recoverableDAILY MX <= 960 g/d 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
001E. coli, colony forming units [CFU]MO AVG <= 126 CFU/100mL all year
001E. coli, colony forming units [CFU]DAILY MX <= 575 CFU/100mL 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