NAUGATUCK WPCF

NPDES permit CT0100641 · Major POTW · administratively continued, expires 2019-08-31 · 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 2019-08-31 and is administratively continued: 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

0values over a limit
0required values missing, on 0 form(s)
3of 11 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (99)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Apr, Jul, Oct
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MIN report only Jan, Mar, May, Jul, Sep, Nov
001pHINST MAX report only Jan, Mar, May, Jul, Sep, Nov
001pHINST MIN report only Jan, Mar, May, Jul, Sep, Nov
001pHINST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 16 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 8 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, nitrite total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, nitrate total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Apr, Jul, Oct
001Cyanide, total [as CN]DAILY MX report only Jan, Apr, Jul, Oct
001Cyanide, free [amenable to chlorination]DAILY MX report only Jan, Apr, Jul, Oct
001Arsenic, total [as As]MO AVG report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Arsenic, total [as As]DAILY MX report only Jan, Apr, Jul, Oct
001Arsenic, total [as As]INST MAX report only all year
001Beryllium, total [as Be]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Beryllium, total [as Be]DAILY MX report only Jan, Apr, Jul, Oct, Dec
001Beryllium, total [as Be]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
001Cadmium, total [as Cd]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Chromium, hexavalent [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
001Chromium, total [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
001Chromium, total [as Cr]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only Jan, Apr, Jul, Oct
001Copper, total [as Cu]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Iron, total [as Fe]DAILY MX report only Jan, Apr, Jul, Oct
001Iron, total [as Fe]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Lead, total [as Pb]DAILY MX report only Jan, Apr, Jul, Oct
001Lead, total [as Pb]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Thallium, total [as Tl]DAILY MX report only Jan, Apr, Jul, Oct
001Nickel, total [as Ni]MO AVG <= 2.14 kg/d all year
001Nickel, total [as Ni]DAILY MX <= 3.94 kg/d all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
001Nickel, total [as Ni]INST MAX report only Jan, Mar, Apr, May, Jul, Sep, Nov
001Silver, total [as Ag]DAILY MX report only Jan, Apr, Jul, Oct
001Zinc, total [as Zn]MO AVG <= 3.79 kg/d all year
001Zinc, total [as Zn]DAILY MX <= 5.68 kg/d all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
001Zinc, total [as Zn]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Antimony, total [as Sb]DAILY MX report only Jan, Apr, Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Jan, Apr, Jul, Oct
001Aluminum, total [as Al]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Selenium, total [as Se]MO AVG <= 35 kg/d all year
001Selenium, total [as Se]DAILY MX <= 75 kg/d all year
001Selenium, total [as Se]MO AVG report only all year
001Selenium, total [as Se]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Selenium, total [as Se]DAILY MX report only Jan, Apr, Jul, Oct
001Selenium, total [as Se]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Polychlorinated biphenyls [PCBs]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001PhenolsDAILY MX report only Jan, Apr, Jul, Oct
001Chlorine, total residualMO AVG report only May, Jun, Jul, Aug, Sep
001Chlorine, total residualDAILY MX <= .06 mg/L May, Jun, Jul, Aug, Sep
001Chlorine, total residualDAILY MX report only Jan, Apr, Jul, Oct
001E. coliAVERAGE <= 126 #/100mL May, Jun, Jul, Aug, Sep
001E. coliINST MAX <= 410 #/100mL May, Jun, Jul, Aug, Sep
001Phosphorus, Total [Avg Seasonal Load Cap]AVERAGE report only Oct
001Solids, total, percentINST MIN report only Jan, Mar, May, Jul, Sep, Nov
001Solids, fixed, % of total solidsINST MIN report only Jan, Mar, May, Jul, Sep, Nov
001Solids, volatile % of total solidsINST MIN report only Jan, Mar, May, Jul, Sep, Nov
001Mercury, total [as Hg]DAILY MX report only Jan, Apr, Jul, Oct
001Mercury, total [as Hg]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Zinc, sludge, total, dry weight [as Zn]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Lead, sludge, total, dry weight [as Pb]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Nickel, sludge, total, dry weight [as Ni]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Mercury, sludge, total, dry weight [as Hg]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Chromium, sludge, total, dry weight [as Cr]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001Copper, sludge, total, dry weight [as Cu]INST MAX report only Jan, Mar, May, Jul, Sep, Nov, Dec
001Cadmium, sludge, total, dry weight [as Cd]INST MAX report only Jan, Mar, May, Jul, Sep, Nov
001BOD, carbonaceous [5 day, 5 C]MO AVG <= 15 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 5 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 5 C]DAILY MX <= 25 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 5 C]DAILY MX <= 40 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 5 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 5 C]DAILY MX report only Jan, Apr, Jul, Oct
001Solids, suspended percent removalMN % RMV >= 85 % all year
001Carbonaceous oxygen demand, % removalMN % RMV >= 85 % all year
001NOAEL Static 48Hr Acute D. pulexMINIMUM >= 90 % survival Jan, Apr, Jul, Oct
001NOAEL Static 48Hr Acute Pimephales promelasMINIMUM >= 90 % survival Jan, Apr, Jul, Oct

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