SUFFOLK COUNTY DPW

NPDES permit NY0023311 · Major POTW · administratively continued, expires 2016-08-31 · 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 2016-08-31 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

0values over a limit
0required values missing, on 0 form(s)
4of 28 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 (53)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 150 lb/d all year
001Solids, total suspendedMO AVG <= 630 lb/d all year
001Solids, total suspended7 DA AVG <= 230 lb/d all year
001Solids, total suspended7 DA AVG <= 940 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX <= 1 lb/d (alert) all year
001Flow, in conduit or thru treatment plantMO AVG <= .6 MGD all year
001Chlorine, total residualDAILY MX <= 2 mg/L all year
001Chlorine, total residualDAILY MX <= 1.6 mg/L all year
001Phosphorous, in total orthophosphateDAILY MX report only all year
001Phosphorous, in total orthophosphateDAILY MX report only all year
001Mercury, total [as Hg]DAILY MX <= .096 ug/L all year
001Mercury, total [as Hg]DAILY MX <= .001 lb/d all year
001Coliform, fecal general30DA GEO <= 200 #/100mL all year
001Coliform, fecal general7 DA GEO <= 400 #/100mL all year
001Coliform, total generalMO MED <= 700 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 130 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 520 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 200 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 830 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % all year
002Nitrogen, nitrite total [as N]MO AVG report only all year
002Nitrogen, nitrite total [as N]MO AVG report only all year
002Nitrogen, nitrate total [as N]MO AVG report only all year
002Nitrogen, nitrate total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Total agg concentration #4MO AVG report only all year
002Total agg concentration #4MO AVG report only all year
002Total agg concentration #4MO AVG report only all year
002Total agg concentration #4MO AVG report only all year
002Total agg concentration #1ROLL AVG <= 213 lb/d all year
002Total agg concentration #2RE report only all year
002Total agg concentration #3MO AVG report only all year
002Nitrogen, ammonia, total [as NH3]MO AVG report only all year
002Nitrogen, ammonia, total [as NH3]MO AVG 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