Passage Data · Check a report · Use it from your AI

Town of Warren

Sewage treatment plant, major discharger, Warren, Rhode Island. NPDES permit RI0100056, in force until Dec 31, 2030. Last 12 months: over a limit 2 times (last March 2026), 34 required values missing, 14 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (44 values), form IF quarterly, form Q quarterly, form T quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 3 required values missing, 8 of 20 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025LC50 Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia), monthly average minimum63 %≥ 100 %37%
March 2026Flow, in conduit or thru treatment plant, monthly average3.52 MGD≤ 3.43 MGD3%

Limits in force (164)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 17.6 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 23.8 mg/LMay–Oct
Solids, total suspendedweekly average≤ 26.4 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 35.8 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 29.3 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 39.7 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 502 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 502 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 838 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 838 lb/dMay–Oct
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, settleableweekly averagereport only (mL/L)all year
Solids, settleabledaily maximumreport only (mL/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 9.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]daily maximumreport only (mg/L)May–Oct
Nitrogen, total [as N]rolling average≤ 239.7 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]rolling average≤ 83.8 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Carbon, tot organic [TOC]monthly averagereport only (mg/L)all year
Carbon, tot organic [TOC]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]monthly averagereport only (ug/L)all year
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year
Chromium, hexavalent [as Cr]monthly averagereport only (ug/L)all year
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year
Copper, total [as Cu]monthly averagereport only (ug/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Lead, total [as Pb]monthly averagereport only (ug/L)all year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Nickel, total [as Ni]monthly averagereport only (ug/L)all year
Nickel, total [as Ni]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]monthly averagereport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Aluminum, total [as Al]monthly averagereport only (ug/L)all year
Aluminum, total [as Al]daily maximumreport only (ug/L)all year
Phenolsmonthly averagereport only (ug/L)all year
Phenolsdaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 2.53 MGDMay–Oct
Flow, in conduit or thru treatment plantmonthly average≤ 3.43 MGDJan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)May–Oct
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualmonthly average≤ 361 ug/LMay–Oct
Chlorine, total residualmonthly average≤ 267 ug/LJan, Feb, Mar, Apr, Nov, Dec
Chlorine, total residualdaily maximum≤ 361 ug/LMay–Oct
Chlorine, total residualdaily maximum≤ 267 ug/LJan, Feb, Mar, Apr, Nov, Dec
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all year
Perfluorooctanoic acid (PFOA)daily maximumreport only (ng/L)all year
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all year
Perfluorobutanoic acid (PFBA)daily maximumreport only (ng/L)all year
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all year
Perfluorooctanesulfonamide (PFOSA)daily maximumreport only (ng/L)all year
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all year
Perfluoropentanoic acid (PFPeA)daily maximumreport only (ng/L)all year
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all year
Perfluorohexanoic acid (PFHxA)daily maximumreport only (ng/L)all year
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all year
Perfluoroheptanoic acid (PFHpA)daily maximumreport only (ng/L)all year
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all year
Perfluorononanoic acid (PFNA)daily maximumreport only (ng/L)all year
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all year
Perfluorodecanoic acid (PFDA)daily maximumreport only (ng/L)all year
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all year
Perfluoroundecanoic acid (PFUnA)daily maximumreport only (ng/L)all year
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all year
Perfluorododecanoic acid (PFDoA)daily maximumreport only (ng/L)all year
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all year
Perfluorotridecanoic acid (PFTrDA)daily maximumreport only (ng/L)all year
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all year
Perfluorotetradecanoic acid (PFTeDA)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)daily maximumreport only (ng/L)all year
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all year
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (ng/L)all year
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all year
Perfluorodecanesulfonic acid (PFDS)daily maximumreport only (ng/L)all year
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all year
Perfluoroheptanesulfonic acid (PFHpS)daily maximumreport only (ng/L)all year
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all year
Perfluorohexanesulfonic acid (PFHxS)daily maximumreport only (ng/L)all year
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all year
Perfluorooctanesulfonic acid (PFOS)daily maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)daily maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)daily maximumreport only (ng/L)all year
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all year
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)daily maximumreport only (ng/L)all year
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all year
Perfluoropentanesulfonic acid (PFPeS)daily maximumreport only (ng/L)all year
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all year
Perfluorononanesulfonic acid (PFNS)daily maximumreport only (ng/L)all year
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all year
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (ng/L)all year
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all year
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)daily maximumreport only (ng/L)all year
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all year
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)daily maximumreport only (ng/L)all year
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all year
Perfluorododecanesulfonic acid (PFDoS)daily maximumreport only (ng/L)all year
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all year
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamide (NMeFOSA)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamide (NEtFOSA)daily maximumreport only (ng/L)all year
Enterococcimonthly geometric mean≤ 35 #/100mLall year
Enterococcidaily maximum≤ 276 #/100mLall year
Coliform, fecal generalmonthly geometric meanreport only (#/100mL)all year
Coliform, fecal generaldaily maximumreport only (#/100mL)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 14.7 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 19.8 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 23.4 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 23.6 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 26.4 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 35.6 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 421.3 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 416.1 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 758.3 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 748.9 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all year
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Cyanide, Availablemonthly averagereport only (ug/L)all year
Cyanide, Availabledaily maximumreport only (ug/L)all year
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all year
3-Perfluoropropyl propanoic acid (3:3 FTCA)daily maximumreport only (ng/L)all year
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all year
Perfluoro-3-methoxypropanoic acid (PFMPA)daily maximumreport only (ng/L)all year
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all year
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)daily maximumreport only (ng/L)all year
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all year
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)daily maximumreport only (ng/L)all year
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all year
3-Perfluoroheptyl propanoic acid (7:3 FTCA)daily maximumreport only (ng/L)all year
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all year
Perfluoro-4-methoxybutanoic acid (PFMBA)daily maximumreport only (ng/L)all year
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all year
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)daily maximumreport only (ng/L)all year
LC50 Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)minimum≥ 100 %all year

How strict are these limits?

Cited limits by parameter: Rhode Island's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/RI0100056 · MCP: https://passage-data.com/mcp