NEW LONDON STP

NPDES permit CT0100382 · Major POTW · effective, expires 2027-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
3of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (1).

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 (92)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]INST MAX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001BOD, 5-day, 20 deg. CDAILY MX report only Feb, May, Aug, Nov
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Solids, total suspendedDAILY MX report only Feb, May, Aug, Nov
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Feb, May, Aug, Nov
001Nitrogen, nitrite total [as N]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Nitrogen, nitrite total [as N]DAILY MX report only Feb, May, Aug, Nov
001Nitrogen, nitrate total [as N]DAILY MX report only Feb, May, Aug, Nov
001Nitrogen, nitrate total [as N]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only Feb, May, Aug, Nov
001Phosphorus, total [as P]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Cyanide, total [as CN]DAILY MX report only Feb, May, Aug, Nov
001Cyanide, total [as CN]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Cyanide, free [amenable to chlorination]DAILY MX report only Feb, May, Aug, Nov
001Cyanide, free [amenable to chlorination]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Arsenic, total [as As]DAILY MX report only Feb, May, Aug, Nov
001Arsenic, total [as As]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Beryllium, total [as Be]DAILY MX report only Feb, May, Aug, Nov
001Beryllium, total [as Be]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Cadmium, total [as Cd]DAILY MX report only Feb, May, Aug, Nov
001Cadmium, total [as Cd]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Chromium, hexavalent [as Cr]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Chromium, hexavalent [as Cr]DAILY MX report only Feb, May, Aug, Nov
001Chromium, total [as Cr]DAILY MX report only Feb, May, Aug, Nov
001Chromium, total [as Cr]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Copper, total [as Cu]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Copper, total [as Cu]DAILY MX report only Feb, May, Aug, Nov
001Iron, total [as Fe]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Iron, total [as Fe]DAILY MX report only Feb, May, Aug, Nov
001Lead, total [as Pb]DAILY MX report only Feb, May, Aug, Nov
001Lead, total [as Pb]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Thallium, total [as Tl]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Thallium, total [as Tl]DAILY MX report only Feb, May, Aug, Nov
001Nickel, total [as Ni]DAILY MX report only Feb, May, Aug, Nov
001Nickel, total [as Ni]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Silver, total [as Ag]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Silver, total [as Ag]DAILY MX report only Feb, May, Aug, Nov
001Zinc, total [as Zn]DAILY MX report only Feb, May, Aug, Nov
001Zinc, total [as Zn]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Antimony, total [as Sb]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Antimony, total [as Sb]DAILY MX report only Feb, May, Aug, Nov
001Aluminum, total [as Al]DAILY MX report only Feb, May, Aug, Nov
001Aluminum, total [as Al]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Selenium, total [as Se]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Selenium, total [as Se]DAILY MX report only Feb, May, Aug, Nov
001Coliform, fecal - % samples exceeding limitMAXIMUM <= 10 % all year
001Polychlorinated biphenyls [PCBs]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001PhenolsDAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001PhenolsDAILY MX report only Feb, May, Aug, Nov
001Chlorine, total residualINST MIN >= .2 mg/L all year
001Chlorine, total residualINST MAX <= 1.5 mg/L all year
001Chlorine, total residualDAILY MX report only Feb, May, Aug, Nov
001Chlorine, total residualDAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Enterococci30DA GEO <= 35 #/100mL all year
001EnterococciMAXIMUM <= 500 #/100mL all year
001Arsenic, sludge tot. dry wt [as As]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Beryllium, sludge, tot. dry wt [as Be]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Solids, total, percentINST MIN report only Feb, Apr, Jun, Aug, Oct, Dec
001Solids, fixed, % of total solidsINST MIN report only Feb, Apr, Jun, Aug, Oct, Dec
001Solids, volatile % of total solidsINST MIN report only Feb, Apr, Jun, Aug, Oct, Dec
001Mercury, total [as Hg]DAILY MX report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001Mercury, total [as Hg]DAILY MX report only Feb, May, Aug, Nov
001Coliform, fecal general30DA GEO <= 88 #/100mL all year
001Zinc, sludge, total, dry weight [as Zn]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Lead, sludge, total, dry weight [as Pb]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Nickel, sludge, total, dry weight [as Ni]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Mercury, sludge, total, dry weight [as Hg]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Chromium, sludge, total, dry weight [as Cr]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Copper, sludge, total, dry weight [as Cu]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Cadmium, sludge, total, dry weight [as Cd]INST MAX report only Feb, Apr, Jun, Aug, Oct, Dec
001Carbonaceous BOD, 5 day, 20 deg C filtrdMO AVG report only all year
001Carbonaceous BOD, 5 day, 20 deg C filtrdDAILY MX report only all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001NOAEL Static 48Hr Acute D. pulexDAILY MN >= 90 % survival Feb, May, Aug, Nov
001NOAEL Static 48Hr Acute D. pulexDAILY MN report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001NOAEL Static 48Hr Acute Pimephales promelasDAILY MN report only Jan, Mar, Apr, Jun, Jul, Sep, Oct, Dec
001NOAEL Static 48Hr Acute Pimephales promelasDAILY MN >= 90 % survival Feb, May, Aug, Nov

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