RIVERHEAD (T)

NPDES permit NY0025453 · Minor POTW · expired, expires 2025-09-30 · 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 2025-09-30 and is expired: 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

0values over a limit
0required values missing, on 0 form(s)
0of 23 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among NY permits in EPA's filings — check your permit).

Limits in force (29)

OutfallParameterStatisticLimitMonths
023Temperature, water deg. fahrenheitDAILY MX report only all year
023Flow rateMO AVG <= .1 MGD all year
023pHMINIMUM >= 6.5 SU all year
023pHMAXIMUM <= 8.5 SU all year
023Nitrogen, total [as N]DAILY MX <= 10 mg/L all year
023Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
023Chlorine, total residualDAILY MX <= 2 mg/L all year
023Solids, total dissolvedDAILY MX <= 1000 mg/L all year
GMWNitrogen, total [as N]QB report only all year
GMWNitrogen, total [as N]QB report only all year
GMWNitrogen, total [as N]QB report only all year
GMWNitrogen, nitrite total [as N]QB report only all year
GMWNitrogen, nitrite total [as N]QB report only all year
GMWNitrogen, nitrite total [as N]QB report only all year
GMWNitrogen, nitrate total [as N]QB report only all year
GMWNitrogen, nitrate total [as N]QB report only all year
GMWNitrogen, nitrate total [as N]QB report only all year
GMWNitrogen, Kjeldahl, total [as N]QB report only all year
GMWNitrogen, Kjeldahl, total [as N]QB report only all year
GMWNitrogen, Kjeldahl, total [as N]QB report only all year
GMWNitrogen, ammonia, total [as NH3]QB report only all year
GMWNitrogen, ammonia, total [as NH3]QB report only all year
GMWNitrogen, ammonia, total [as NH3]QB report only all year
GMWSolids, total dissolvedQB report only all year
GMWSolids, total dissolvedQB report only all year
GMWSolids, total dissolvedQB report only all year
GMWWater level relative to mean sea levelSINGSAMP report only all year
GMWWater level relative to mean sea levelSINGSAMP report only all year
GMWWater level relative to mean sea levelSINGSAMP report only 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