SOUTH DAVIS SEWER DISTRICT-NORTH PLANT

NPDES permit UT0021636 · Major POTW · effective, expires 2026-12-08 · 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

5values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (4), Oxygen, dissolved [DO] (1).

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 (86)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX MO AV report only all year
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 25 mg/L Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 20 mg/L Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 35 mg/L Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 27 mg/L Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMX MO AV <= 25 mg/L all year
001Solids, total suspendedMX WK AV <= 35 mg/L all year
001Solids, total suspendedMX MO AV report only all year
001Oil & GreaseDAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]MX MO AV <= 6.5 mg/L Jan, Feb, Mar
001Nitrogen, ammonia total [as N]MX MO AV <= 5.5 mg/L Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 6 mg/L Apr, May, Jun
001Nitrogen, ammonia total [as N]MX MO AV <= 7.5 mg/L Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 5.5 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MX MO AV <= 7.5 mg/L Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX MO AV <= 6 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]MX MO AV <= 6.5 mg/L Jan, Feb, Dec
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]MX MO AV <= 12 mg/L Jan, Feb, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 9 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MX MO AV <= 9 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 9 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]MX MO AV <= 10 mg/L Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX MO AV <= 12 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Jan, Feb, Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Apr, May, Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 16.2 mg/L Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 16.2 mg/L Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Jan, Feb, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Jan, Feb, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 16.2 mg/L Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 31.7 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 16.2 mg/L Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 23.4 mg/L Jan, Feb, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 26.8 mg/L Mar, Apr, May
001Nitrogen, ammonia total [as N]MO MAX <= 1202 lb/d Jan, Feb, Dec
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Phosphorus, total [as P]MX MO AV report only all year
001Phosphorus, total [as P]30DA AVG report only all year
001Cyanide, free [as free]MX MO AV report only all year
001Arsenic, total [as As]QRTR AVG report only all year
001Arsenic, total [as As]QRTR AVG report only all year
001Cadmium, total [as Cd]QRTR AVG report only all year
001Cadmium, total [as Cd]QRTR AVG report only all year
001Chromium, total [as Cr]QRTR AVG report only all year
001Chromium, total [as Cr]QRTR AVG report only all year
001Copper, total [as Cu]QRTR AVG report only all year
001Copper, total [as Cu]QRTR AVG report only all year
001Lead, total [as Pb]QRTR AVG report only all year
001Lead, total [as Pb]QRTR AVG report only all year
001Molybdenum, total [as Mo]QRTR AVG report only all year
001Molybdenum, total [as Mo]QRTR AVG report only all year
001Nickel, total [as Ni]QRTR AVG report only all year
001Nickel, total [as Ni]QRTR AVG report only all year
001Silver, total [as Ag]QRTR AVG report only all year
001Silver, total [as Ag]QRTR AVG report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Selenium, total [as Se]QRTR AVG report only all year
001Selenium, total [as Se]QRTR AVG report only all year
001Phosphate, ortho [as P]30DA AVG report only all year
001Flow, in conduit or thru treatment plantMX MO AV <= 12 MGD all year
001Chlorine, total residualDAILY MX <= .057 mg/L Oct, Nov, Dec
001Chlorine, total residualDAILY MX <= .066 mg/L Jul, Aug, Sep
001Chlorine, total residualDAILY MX <= .045 mg/L Jan, Feb, Mar
001Chlorine, total residualDAILY MX <= .048 mg/L Apr, May, Jun
001E. coliMX MO AV <= 126 #/100mL all year
001E. coliMX WK AV <= 157 #/100mL all year
001Solids, total dissolved [TDS]MX MO AV report only all year
001Nitrogen, nitrate total [as NO3]MX MO AV report only all year
001Nitrogen, nitrite total [as NO2]MX MO AV report only all year
001Mercury, total [as Hg]QRTR AVG report only all year
001Mercury, total [as Hg]QRTR AVG report only all year
001BOD, 5-day, percent removalMN % RMV >= 85 % all year
001Solids, suspended percent removalMN % RMV >= 85 % all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 Mar, Sep
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasDAILY MX <= 0 pass=0;fail=1 Jun, Dec

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