COUNTY OF NASSAU, NYDPW

NPDES permit NY0280283 · Minor NON-POTW · effective, expires 2030-06-30 · 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.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
30of 66 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (48)

OutfallParameterStatisticLimitMonths
POD1pHDAILY MN >= 6.5 SU all year
POD1pHDAILY MX <= 8.5 SU all year
POD1Solids, total suspendedMO AVG <= 20 mg/L all year
POD1Solids, total suspendedDAILY MX <= 40 mg/L all year
POD1Solids, settleableDAILY MX <= .1 mL/L all year
POD1Zinc, total [as Zn]DAILY MX <= 40 ug/L all year
POD1Benzo[a]pyreneDAILY MX <= .0064 ug/L all year
POD1Benzo[a]pyreneDAILY MX <= .06 ug/L all year
POD1Flow, in conduit or thru treatment plantDAILY MX <= 3.6 MGD all year
POD1Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
POD2pHDAILY MN >= 6.5 SU all year
POD2pHDAILY MX <= 8.5 SU all year
POD2Solids, total suspendedMO AVG <= 20 mg/L all year
POD2Solids, total suspendedDAILY MX <= 40 mg/L all year
POD2Solids, settleableDAILY MX <= .1 mL/L all year
POD2Flow, in conduit or thru treatment plantDAILY MX <= .72 MGD all year
POD2Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
POD3pHDAILY MN >= 6.5 SU all year
POD3pHDAILY MX <= 8.5 SU all year
POD3Solids, total suspendedMO AVG <= 20 mg/L all year
POD3Solids, total suspendedDAILY MX <= 40 mg/L all year
POD3Solids, settleableDAILY MX <= .1 mL/L all year
POD3Flow, in conduit or thru treatment plantDAILY MX <= 1.584 MGD all year
POD3Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
POD4pHDAILY MN >= 6.5 SU all year
POD4pHDAILY MX <= 8.5 SU all year
POD4Solids, total suspendedMO AVG <= 20 mg/L all year
POD4Solids, total suspendedDAILY MX <= 40 mg/L all year
POD4Solids, settleableDAILY MX <= .1 mL/L all year
POD4Flow, in conduit or thru treatment plantDAILY MX <= 3.6 MGD all year
POD4Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
POD5pHDAILY MN >= 6.5 SU all year
POD5pHDAILY MX <= 8.5 SU all year
POD5Solids, total suspendedMO AVG <= 20 mg/L all year
POD5Solids, total suspendedDAILY MX <= 40 mg/L all year
POD5Solids, settleableDAILY MX <= .1 mL/L all year
POD5ChlorobenzeneDAILY MX <= 5 ug/L all year
POD5ChlorobenzeneDAILY MX <= 25 ug/L all year
POD5Flow, in conduit or thru treatment plantDAILY MX <= 3.6 MGD all year
POD5Mercury, total [as Hg]DAILY MX <= 200 ng/L all year
POD5Benzene [volatile analysis]DAILY MX <= 5 ug/L all year
POD6pHDAILY MN >= 6.5 SU all year
POD6pHDAILY MX <= 8.5 SU all year
POD6Solids, total suspendedMO AVG <= 20 mg/L all year
POD6Solids, total suspendedDAILY MX <= 40 mg/L all year
POD6Solids, settleableDAILY MX <= .1 mL/L all year
POD6Flow, in conduit or thru treatment plantDAILY MX <= 3.6 MGD all year
POD6Mercury, total [as Hg]DAILY MX <= 200 ng/L 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