STAR ISLAND TREATMENT FACILITY

NPDES permit NH0101028 · Minor NON-POTW · administratively continued, expires 2026-08-31 · 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.

This permit expired on 2026-08-31 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

12values over a limit
0required values missing, on 0 form(s)
0of 28 forms filed late

Last period with anything received: 2026-07-31. Most often over: Enterococci: group D, MF trans, M-E, EIA (4), BOD, 5-day, 20 deg. C (3), Chlorine, total residual (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 (51)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CMO AVG <= 3.8 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CDAILY MX <= 6.3 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CWKLY AVG <= 5.6 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, 20 deg. CMO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001pHMINIMUM >= 6 SU Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001pHMAXIMUM <= 8 SU Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001pHDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001SalinityDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMO AVG <= 30 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedWKLY AVG <= 45 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedDAILY MX <= 50 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMO AVG <= 4.4 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedDAILY MX <= 7.3 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedWKLY AVG <= 6.6 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Carbon, tot organic [TOC]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Carbon, tot organic [TOC]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Cadmium, total [as Cd]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Cadmium, total [as Cd]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Copper, total [as Cu]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Copper, total [as Cu]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Lead, total [as Pb]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Lead, total [as Pb]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nickel, total [as Ni]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nickel, total [as Ni]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Zinc, total [as Zn]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Zinc, total [as Zn]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Enterococci: group D, MF trans, M-E, EIAMO GEO <= 35 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Enterococci: group D, MF trans, M-E, EIADAILY MX <= 104 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Flow, in conduit or thru treatment plantMO AVG <= .0175 MGD Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Flow, in conduit or thru treatment plantDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Chlorine, total residualMO AVG <= .64 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Chlorine, total residualDAILY MX <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Coliform, total - % samples exceeding limitMX <= 10 % Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Coliform, fecal generalMO GEO <= 14 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, 5-day, percent removalMO MIN >= 85 % Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, suspended percent removalMO MIN >= 85 % Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002pHMINIMUM >= 6.5 SU Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002pHMAXIMUM <= 8.3 SU Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Solids, total suspendedMO AVG <= 30 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Solids, total suspendedWKLY AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Solids, total suspendedDAILY MX <= 50 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Solids, total suspendedMO AVG <= 20 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Flow, in conduit or thru treatment plantMO AVG <= .08 MGD Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
002Flow, in conduit or thru treatment plantDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct, Nov

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