TOWN OF WARREN

NPDES permit RI0100056 · Major POTW · effective, expires 2030-12-31 · 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.

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

2values over a limit
34required values missing, on 1 form(s)
16of 21 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (1), LC50 Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) (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 (164)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 17.6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 23.8 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY AVG <= 26.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 35.8 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 29.3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedDAILY MX <= 39.7 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 502 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 502 lb/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 838 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedDAILY MX <= 838 lb/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, settleableWKLY AVG report only all year
001Solids, settleableDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, total [as N]MO AVG <= 9.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]MO AVG <= 5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]ROLL AVG <= 239.7 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]ROLL AVG <= 83.8 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, nitrite total [as N]MO AVG report only all year
001Nitrogen, nitrite 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
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Carbon, tot organic [TOC]MO AVG report only all year
001Carbon, tot organic [TOC]DAILY MX report only all year
001Cadmium, total [as Cd]MO AVG report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]MO AVG report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Lead, total [as Pb]MO AVG report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Nickel, total [as Ni]MO AVG report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001PhenolsMO AVG report only all year
001PhenolsDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 2.53 MGD May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG <= 3.43 MGD Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualMO AVG <= 361 ug/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG <= 267 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= 361 ug/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= 267 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001Perfluorooctanoic acid (PFOA)DAILY MX report only all year
001Perfluorobutanoic acid (PFBA)DAILY MX report only all year
001Perfluorobutanoic acid (PFBA)DAILY MX report only all year
001Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
001Perfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
001Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
001Perfluoropentanoic acid (PFPeA)DAILY MX report only all year
001Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
001Perfluorohexanoic acid (PFHxA)DAILY MX report only all year
001Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
001Perfluoroheptanoic acid (PFHpA)DAILY MX report only all year
001Perfluorononanoic acid (PFNA)DAILY MX report only all year
001Perfluorononanoic acid (PFNA)DAILY MX report only all year
001Perfluorodecanoic acid (PFDA)DAILY MX report only all year
001Perfluorodecanoic acid (PFDA)DAILY MX report only all year
001Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
001Perfluoroundecanoic acid (PFUnA)DAILY MX report only all year
001Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
001Perfluorododecanoic acid (PFDoA)DAILY MX report only all year
001Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
001Perfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
001Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
001Perfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Perfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
001Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
001Perfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
001Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
001Perfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
001Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
001Perfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
001Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
001Perfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0011H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
0011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
0011H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
001Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
001Perfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
001Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
001Perfluorononanesulfonic acid (PFNS)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Hexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
001Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
001Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
001Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
001Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
001Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
001Perfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
0014,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
0014,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
001N-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
001N-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
001EnterococciMO GEO <= 35 #/100mL all year
001EnterococciDAILY MX <= 276 #/100mL all year
001Coliform, fecal generalMO GEO report only all year
001Coliform, fecal generalDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 14.7 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 19.8 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 23.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 23.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 26.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 35.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 421.3 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 416.1 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 758.3 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 748.9 lb/d May, Jun, Jul, Aug, Sep, Oct
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]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001BOD, carb-5 day, 20 deg C, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Cyanide, AvailableMO AVG report only all year
001Cyanide, AvailableDAILY MX report only all year
0013-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
0013-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
001Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
001Perfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
0019-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
0019-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
00111-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
00111-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
0013-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
0013-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
001Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
001Perfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
0012H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
0012H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
001LC50 Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MINIMUM >= 100 % 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