PLYMOUTH WPCF

NPDES permit CT0100463 · Major POTW · administratively continued, expires 2021-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2021-05-31 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

2values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: pH (2).

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 (113)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]INST MIN >= 7 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 33 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Apr, Jul, Oct
001BOD, 5-day, 20 deg. CDAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 13 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedDAILY MX <= 22 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only Jan, Apr, Jul, Oct
001Solids, total suspendedDAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 9 mg/L Mar, Apr
001Nitrogen, ammonia total [as N]MO AVG <= 8 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jun, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 6 mg/L Jan, Feb
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX report only Mar, Apr
001Nitrogen, ammonia total [as N]DAILY MX report only May
001Nitrogen, ammonia total [as N]DAILY MX report only Jun, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb
001Nitrogen, ammonia total [as N]DAILY MX report only Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Nitrogen, nitrite total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, nitrite total [as N]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Nitrogen, nitrate total [as N]DAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, nitrate total [as N]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Phosphorus, total [as P]MO AVG <= .78 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX <= 1.56 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Jan, Apr, Jul, Oct
001Phosphorus, total [as P]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Cyanide, total [as CN]DAILY MX report only Jan, Apr, Jul, Oct
001Cyanide, total [as CN]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Cyanide, free [amenable to chlorination]DAILY MX report only Jan, Apr, Jul, Oct
001Cyanide, free [amenable to chlorination]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Arsenic, total [as As]DAILY MX report only Jan, Apr, Jul, Oct
001Arsenic, total [as As]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Beryllium, total [as Be]DAILY MX report only Jan, Apr, Jul, Oct
001Beryllium, total [as Be]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
001Cadmium, total [as Cd]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Chromium, hexavalent [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
001Chromium, hexavalent [as Cr]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Chromium, total [as Cr]DAILY MX report only Jan, Apr, Jul, Oct
001Chromium, total [as Cr]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Copper, total [as Cu]MO AVG <= .123 kg/d all year
001Copper, total [as Cu]DAILY MX <= .227 kg/d all year
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]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Iron, total [as Fe]DAILY MX report only Jan, Apr, Jul, Oct
001Iron, total [as Fe]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Lead, total [as Pb]DAILY MX report only Jan, Apr, Jul, Oct
001Lead, total [as Pb]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Thallium, total [as Tl]DAILY MX report only Jan, Apr, Jul, Oct
001Thallium, total [as Tl]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
001Nickel, total [as Ni]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Silver, total [as Ag]DAILY MX report only Jan, Apr, Jul, Oct
001Silver, total [as Ag]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Zinc, total [as Zn]MO AVG <= .304 kg/d all year
001Zinc, total [as Zn]DAILY MX <= .574 kg/d all year
001Zinc, total [as Zn]MO AVG report only 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]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Antimony, total [as Sb]DAILY MX report only Jan, Apr, Jul, Oct
001Antimony, total [as Sb]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Aluminum, total [as Al]DAILY MX report only Jan, Apr, Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Selenium, total [as Se]DAILY MX report only Jan, Apr, Jul, Oct
001Selenium, total [as Se]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Polychlorinated biphenyls [PCBs]INST MAX report only Jan, Apr, Jul, Oct
001PhenolsDAILY MX report only Jan, Apr, Jul, Oct
001PhenolsDAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Ultraviolet light intensityMINIMUM >= 6.1 mW/cm2 Apr, May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX report only Jan, Apr, Jul, Oct
001Chlorine, total residualDAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001E. coli30DA GEO <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliMAXIMUM <= 410 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, Total [Avg Seasonal Load Cap]MO AVG report only Oct
001Arsenic, sludge tot. dry wt [as As]INST MAX report only Jan, Apr, Jul, Oct
001Beryllium, sludge, tot. dry wt [as Be]INST MAX report only Jan, Apr, Jul, Oct
001Solids, total, percentINST MIN report only Jan, Apr, Jul, Oct
001Solids, fixed, % of total solidsINST MIN report only Jan, Apr, Jul, Oct
001Solids, volatile % of total solidsINST MIN report only Jan, Apr, Jul, Oct
001Mercury, total [as Hg]DAILY MX report only Jan, Apr, Jul, Oct
001Mercury, total [as Hg]DAILY MX report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001Zinc, sludge, total, dry weight [as Zn]INST MAX report only Jan, Apr, Jul, Oct
001Lead, sludge, total, dry weight [as Pb]INST MAX report only Jan, Apr, Jul, Oct
001Nickel, sludge, total, dry weight [as Ni]INST MAX report only Jan, Apr, Jul, Oct
001Mercury, sludge, total, dry weight [as Hg]INST MAX report only Jan, Apr, Jul, Oct
001Chromium, sludge, total, dry weight [as Cr]INST MAX report only Jan, Apr, Jul, Oct
001Copper, sludge, total, dry weight [as Cu]INST MAX report only Jan, Apr, Jul, Oct
001Cadmium, sludge, total, dry weight [as Cd]INST MAX report only Jan, Apr, Jul, Oct
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001NOAEL Static 48Hr Acute D. pulexMINIMUM >= 90 % survival Jan, Apr, Jul, Oct
001NOAEL Static 48Hr Acute D. pulexMINIMUM report only Feb, Mar, May, Jun, Aug, Sep, Nov, Dec
001NOAEL Static 48Hr Acute Pimephales promelasMINIMUM >= 90 % survival Jan, Apr, Jul, Oct
001NOAEL Static 48Hr Acute Pimephales promelasMINIMUM report only Feb, Mar, May, Jun, Aug, Sep, Nov, 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