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Refuse Systems, Johnston, Rhode Island. NPDES permit RI0023442, in force until Mar 31, 2027. Last 12 months: over a limit 4 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 11.5 mg/L | ≤ 10 mg/L | 15% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 11.5 mg/L | ≤ 4.9 mg/L | 135% |
| March 2026 | Solids, total suspended, monthly average | 56 mg/L | ≤ 27 mg/L | 107% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 5.05 mg/L | ≤ 4.9 mg/L | 3% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Apr–Jun | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Apr–Jun | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| pH | minimum | ≥ 6 SU | Apr–Jun | 002 |
| pH | minimum | ≥ 6 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| pH | maximum | ≤ 9 SU | Apr–Jun | 002 |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 002 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 002 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Apr–Jun | 002 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Apr–Jun | 002 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Apr–Jun | 002 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Apr–Jun | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Phenol | monthly average | ≤ 15 ug/L | Apr–Jun | 002 |
| Phenol | monthly average | ≤ 15 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Phenol | daily maximum | ≤ 26 ug/L | Apr–Jun | 002 |
| Phenol | daily maximum | ≤ 26 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Apr–Jun | 002 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Apr–Jun | 002 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| p-Cresol | monthly average | ≤ 14 ug/L | Apr–Jun | 002 |
| p-Cresol | monthly average | ≤ 14 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Apr–Jun | 002 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Apr–Jun | 002 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Apr–Jun | 002 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Apr–Jun | 004 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Apr–Jun | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| pH | minimum | ≥ 6 SU | Apr–Jun | 004 |
| pH | minimum | ≥ 6 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| pH | maximum | ≤ 9 SU | Apr–Jun | 004 |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Apr–Jun | 004 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Apr–Jun | 004 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Apr–Jun | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Apr–Jun | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 004 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 004 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Apr–Jun | 004 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Apr–Jun | 004 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Apr–Jun | 004 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Apr–Jun | 004 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Phenol | monthly average | ≤ 15 ug/L | Apr–Jun | 004 |
| Phenol | monthly average | ≤ 15 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Phenol | daily maximum | ≤ 26 ug/L | Apr–Jun | 004 |
| Phenol | daily maximum | ≤ 26 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Coliform, fecal general | monthly average | report only (MPN/100mL) | all year | 004 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 004 |
| p-Cresol | monthly average | ≤ 14 ug/L | Apr–Jun | 004 |
| p-Cresol | monthly average | ≤ 14 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Apr–Jun | 004 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Apr–Jun | 004 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Apr–Jun | 004 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Apr–Jun | 004 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Apr–Jun | 004 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | Apr–Jun | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Jun | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 005 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 005 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 005 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 005 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 005 |
| Coliform, fecal general | monthly average | report only (MPN/100mL) | all year | 005 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | Apr–Jun | 006 |
| Solids, total suspended | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Jun | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 006 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 006 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 006 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 006 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 006 |
| Coliform, fecal general | monthly average | report only (MPN/100mL) | all year | 006 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 006 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Apr–Jun | 015 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Apr–Jun | 015 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| pH | minimum | ≥ 6 SU | Apr–Jun | 015 |
| pH | minimum | ≥ 6 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| pH | maximum | ≤ 9 SU | Apr–Jun | 015 |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Apr–Jun | 015 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Apr–Jun | 015 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Apr–Jun | 015 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Apr–Jun | 015 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 015 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 015 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Apr–Jun | 015 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Apr–Jun | 015 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Apr–Jun | 015 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Apr–Jun | 015 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Phenol | monthly average | ≤ 15 ug/L | Apr–Jun | 015 |
| Phenol | monthly average | ≤ 15 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Phenol | daily maximum | ≤ 26 ug/L | Apr–Jun | 015 |
| Phenol | daily maximum | ≤ 26 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Apr–Jun | 015 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Apr–Jun | 015 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Coliform, fecal general | monthly average | report only (MPN/100mL) | all year | 015 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 015 |
| p-Cresol | monthly average | ≤ 14 ug/L | Apr–Jun | 015 |
| p-Cresol | monthly average | ≤ 14 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Apr–Jun | 015 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Apr–Jun | 015 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Apr–Jun | 015 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 015 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Apr–Jun | 017 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 37 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Apr–Jun | 017 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 140 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| pH | minimum | ≥ 6 SU | Apr–Jun | 017 |
| pH | minimum | ≥ 6 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| pH | maximum | ≤ 9 SU | Apr–Jun | 017 |
| pH | maximum | ≤ 9 SU | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Apr–Jun | 017 |
| Solids, total suspended | monthly average | ≤ 27 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Apr–Jun | 017 |
| Solids, total suspended | daily maximum | ≤ 88 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Apr–Jun | 017 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Apr–Jun | 017 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Apr–Jun | 017 |
| Phosphorus, total [as P] | monthly average | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Apr–Jun | 017 |
| Phosphorus, total [as P] | daily maximum | report only (ug/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Apr–Jun | 017 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Apr–Jun | 017 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Apr–Jun | 017 |
| Zinc, total [as Zn] | monthly average | ≤ 110 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Apr–Jun | 017 |
| Zinc, total [as Zn] | daily maximum | ≤ 200 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Phenol | monthly average | ≤ 15 ug/L | Apr–Jun | 017 |
| Phenol | monthly average | ≤ 15 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Phenol | daily maximum | ≤ 26 ug/L | Apr–Jun | 017 |
| Phenol | daily maximum | ≤ 26 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Apr–Jun | 017 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Coliform, fecal general | monthly average | report only (MPN/100mL) | all year | 017 |
| Coliform, fecal general | daily maximum | report only (MPN/100mL) | all year | 017 |
| p-Cresol | monthly average | ≤ 14 ug/L | Apr–Jun | 017 |
| p-Cresol | monthly average | ≤ 14 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Apr–Jun | 017 |
| p-Cresol | daily maximum | ≤ 25 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Apr–Jun | 017 |
| Benzoic acids, total | monthly average | ≤ 71 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Apr–Jun | 017 |
| Benzoic acids, total | daily maximum | ≤ 120 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Apr–Jun | 017 |
| .alpha.-Terpineol | monthly average | ≤ 16 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Apr–Jun | 017 |
| .alpha.-Terpineol | daily maximum | ≤ 33 ug/L | Jan, Feb, Mar, Jul, Aug, Sep, Oct, Nov, Dec | 017 |
Cited limits by parameter: Rhode Island's rules and the federal ones.
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