NWL CO

NPDES permit PA0098761 · Minor NON-POTW · expired, expires 2024-06-30 · 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 2024-06-30 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

1values over a limit
0required values missing, on 0 form(s)
0of 10 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, carbonaceous [5 day, 20 C] (1).

Reporting

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

Limits in force (60)

OutfallParameterStatisticLimitMonths
001TurbidityMO AVG <= 10 NTU Jun, Jul, Aug, Sep, Oct
001TurbidityINST MAX <= 15 NTU Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 7 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CINST MAX <= 20 mg/L Jun, Jul, Aug, Sep, Oct
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Solids, total suspendedMO AVG <= 41.7 lb/d all year
001Solids, total suspendedWKLY AVG <= 62.6 lb/d all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 3.7 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 10.4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.3 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 15.9 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 9.6 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG <= 10 mg/L all year
001Nitrite + Nitrate total [as N]WKLY AVG <= 15 mg/L all year
001Nitrite + Nitrate total [as N]MO AVG <= 41.7 lb/d all year
001Nitrite + Nitrate total [as N]WKLY AVG <= 62.6 lb/d all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]WKLY AVG <= 1.5 mg/L all year
001Phosphorus, total [as P]MO AVG <= 4.2 lb/d all year
001Phosphorus, total [as P]WKLY AVG <= 6.3 lb/d all year
001Iron, total [as Fe]MO AVG <= 1.4 mg/L all year
001Iron, total [as Fe]DAILY MX <= 2.8 mg/L all year
001Iron, total [as Fe]MO AVG <= 5.8 lb/d all year
001Iron, total [as Fe]DAILY MX <= 11.6 lb/d all year
001Manganese, total [as Mn]MO AVG <= .2 mg/L all year
001Manganese, total [as Mn]DAILY MX <= .4 mg/L all year
001Manganese, total [as Mn]MO AVG <= .8 lb/d all year
001Manganese, total [as Mn]DAILY MX <= 1.6 lb/d all year
001Aluminum, total [as Al]MO AVG <= .5 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 1 mg/L all year
001Aluminum, total [as Al]MO AVG <= 2.1 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 4.2 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG <= .5 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= .5 MGD Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantDAILY MX report only Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG <= .04 mg/L all year
001Chlorine, total residualINST MAX <= .09 mg/L all year
001Chlorine, total residualMO AVG <= .04 mg/L Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualINST MAX <= .09 mg/L Jun, Jul, Aug, Sep, Oct
001Ultraviolet light dosageINST MIN >= 100 mJ/cm2 Jun, Jul, Aug, Sep, Oct
001Coliform, fecal generalGEO MEAN <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalGEO MEAN <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalINST MAX <= 1000 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalINST MAX <= 10000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalMO AVG <= 2.2 #/100mL Jun, Jul, Aug, Sep, Oct
001Coliform, fecal generalINST MAX <= 23 #/100mL Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 41.7 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 62.6 lb/d 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