MORRISTOWN TOWN

NPDES permit NJ0025496 · Major POTW · expired, expires 2026-03-31 · 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.

This permit expired on 2026-03-31 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

2values over a limit
0required values missing, on 0 form(s)
1of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (2).

Reporting

Reports are due about 26 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (69)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeINST MIN report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Temperature, water deg. centigradeINST MIN report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeINST MAX report only all year
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L all year
001Oxygen, dissolved [DO]MO AV MN report only all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MIN report only all year
001pHINST MAX report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 390 kg/d all year
001Solids, total suspendedWKLY AVG <= 590 kg/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedMO AV MN >= 85 % all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseMAXIMUM <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 6.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 3 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 80 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 26 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 160 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 39 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, nitrate 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
001Phosphorus, total [as P]MO AVG <= .76 mg/L all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, 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 recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only all year
001Chlorine produced oxidantsMO AVG <= .03 mg/L all year
001Chlorine produced oxidantsDAILY MX <= .04 mg/L all year
001Chlorine produced oxidantsMO AVG <= .39 kg/d all year
001Chlorine produced oxidantsDAILY MX <= .52 kg/d all year
001Bromodichloromethane, effluentMO AVG report only all year
001Bromodichloromethane, effluentDAILY MX <= 1.41 ug/L all year
001Bromodichloromethane, effluentMO AVG report only all year
001Bromodichloromethane, effluent1H <= 18.4 g/d all year
001Flow, in conduit or thru treatment plantRE 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
001E. coliMOAV GEO <= 126 MPN/100mL all year
001E. coliINST MAX report only all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverableDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 8 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 12 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 104 kg/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 157 kg/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AV MN >= 85 % all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM report only all year
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 24 % 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