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Sewage treatment plant, major discharger, New Shoreham, Rhode Island. NPDES permit RI0100196, in force until Jun 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 75 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 125 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 75 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 125 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | all year | 100 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 30 mg/L | all year | 100 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 33 mg/L | all year | 100 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 100 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 100 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 100 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 100 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 100 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 100 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 100 |
| pH | minimum | ≥ 6.5 SU | all year | 100 |
| pH | maximum | ≤ 8.5 SU | all year | 100 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 100 |
| Solids, total suspended | weekly average | ≤ 30 mg/L | all year | 100 |
| Solids, total suspended | daily maximum | ≤ 33 mg/L | all year | 100 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 100 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 100 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 100 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 100 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 100 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 100 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 100 |
| Solids, settleable | weekly average | report only (mL/L) | all year | 100 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 100 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 100 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 100 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 100 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 100 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.3 mg/L | May–Oct | 100 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 84 mg/L | May–Oct | 100 |
| Nitrogen, nitrite total [as N] | monthly average | report only (mg/L) | all year | 100 |
| Nitrogen, nitrite total [as N] | daily maximum | report only (mg/L) | all year | 100 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 100 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 100 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 100 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 100 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 100 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 100 |
| Cadmium, total [as Cd] | monthly average | report only (ug/L) | all year | 100 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 100 |
| Chromium, hexavalent [as Cr] | monthly average | report only (ug/L) | all year | 100 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year | 100 |
| Copper, total [as Cu] | monthly average | ≤ 73.5 ug/L | all year | 100 |
| Copper, total [as Cu] | daily maximum | ≤ 81 ug/L | all year | 100 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 100 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 100 |
| Nickel, total [as Ni] | monthly average | report only (ug/L) | all year | 100 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 100 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 100 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 100 |
| Aluminum, total [as Al] | monthly average | report only (ug/L) | all year | 100 |
| Aluminum, total [as Al] | daily maximum | report only (ug/L) | all year | 100 |
| Phenols | monthly average | report only (ug/L) | all year | 100 |
| Phenols | daily maximum | report only (ug/L) | all year | 100 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .45 MGD | all year | 100 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 100 |
| Chlorine, total residual | monthly average | ≤ 185 ug/L | all year | 100 |
| Chlorine, total residual | daily maximum | ≤ 228 ug/L | all year | 100 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorobutanoic acid (PFBA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorobutanoic acid (PFBA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorooctanesulfonamide (PFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorooctanesulfonamide (PFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoropentanoic acid (PFPeA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoropentanoic acid (PFPeA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorohexanoic acid (PFHxA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorohexanoic acid (PFHxA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroheptanoic acid (PFHpA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroheptanoic acid (PFHpA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorodecanoic acid (PFDA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorodecanoic acid (PFDA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroundecanoic acid (PFUnA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroundecanoic acid (PFUnA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorododecanoic acid (PFDoA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorododecanoic acid (PFDoA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorotridecanoic acid (PFTrDA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorotridecanoic acid (PFTrDA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorotetradecanoic acid (PFTeDA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorotetradecanoic acid (PFTeDA) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorodecanesulfonic acid (PFDS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorodecanesulfonic acid (PFDS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroheptanesulfonic acid (PFHpS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoroheptanesulfonic acid (PFHpS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoropentanesulfonic acid (PFPeS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoropentanesulfonic acid (PFPeS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorononanesulfonic acid (PFNS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorononanesulfonic acid (PFNS) | daily maximum | report only (ng/L) | all year | 100 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 100 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 100 |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | daily maximum | report only (ng/L) | all year | 100 |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorododecanesulfonic acid (PFDoS) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluorododecanesulfonic acid (PFDoS) | daily maximum | report only (ng/L) | all year | 100 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | daily maximum | report only (ng/L) | all year | 100 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamide (NMeFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| N-methyl perfluorooctanesulfonamide (NMeFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamide (NEtFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| N-ethyl perfluorooctanesulfonamide (NEtFOSA) | daily maximum | report only (ng/L) | all year | 100 |
| Enterococci | monthly geometric mean | ≤ 35 CFU/100mL | all year | 100 |
| Enterococci | daily maximum | ≤ 276 CFU/100mL | all year | 100 |
| Coliform, fecal general | monthly geometric mean | report only (MPN/100mL) | all year | 100 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 100 |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year | 100 |
| Solids, suspended percent removal | minimum | ≥ 85 % | all year | 100 |
| Cyanide, Available | monthly average | report only (ug/L) | all year | 100 |
| Cyanide, Available | daily maximum | report only (ug/L) | all year | 100 |
| 3-Perfluoropropyl propanoic acid (3:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| 3-Perfluoropropyl propanoic acid (3:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | daily maximum | report only (ng/L) | all year | 100 |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS) | daily maximum | report only (ng/L) | all year | 100 |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS) | daily maximum | report only (ng/L) | all year | 100 |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | daily maximum | report only (ng/L) | all year | 100 |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | daily maximum | report only (ng/L) | all year | 100 |
| 3-Perfluoroheptyl propanoic acid (7:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| 3-Perfluoroheptyl propanoic acid (7:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | daily maximum | report only (ng/L) | all year | 100 |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | daily maximum | report only (ng/L) | all year | 100 |
| 2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| 2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA) | daily maximum | report only (ng/L) | all year | 100 |
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | minimum | ≥ 100 % | all year | 100 |
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | minimum | report only (%) | all year | 100 |
| Turbidity | monthly average | report only (NTU) | all year | 200 |
| Turbidity | daily maximum | report only (NTU) | all year | 200 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 200 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 200 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 200 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 200 |
| pH | minimum | ≥ 6.5 SU | all year | 200 |
| pH | maximum | ≤ 8.5 SU | all year | 200 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 200 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 200 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 200 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 200 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 200 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.3 mg/L | May–Oct | 200 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 84 mg/L | May–Oct | 200 |
| Nitrogen, nitrite total [as N] | daily maximum | report only (mg/L) | all year | 200 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 200 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 200 |
| Copper, total [as Cu] | monthly average | ≤ 73.5 ug/L | all year | 200 |
| Copper, total [as Cu] | daily maximum | ≤ 81 ug/L | all year | 200 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .05 MGD | all year | 200 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 200 |
| Chlorine, total residual | monthly average | ≤ 185 ug/L | all year | 200 |
| Chlorine, total residual | daily maximum | ≤ 228 ug/L | all year | 200 |
Cited limits by parameter: Rhode Island's rules and the federal ones.
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