GREENPORT (T)

NPDES permit NY0030988 · Major POTW · effective, expires 2030-04-30 · 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

8values over a limit
2required values missing, on 2 form(s)
4of 26 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, total suspended (4), Solids, settleable (2), Carbonaceous oxygen demand, % removal (1).

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 (66)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen demand, ultimateDAILY MX <= 72 mg/L Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateDAILY MX <= 810 lb/d Jun, Jul, Aug, Sep, Oct
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 340 lb/d all year
001Solids, total suspended7 DA AVG <= 510 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspended7 DA AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspended7 DA AVG report only all year
001Solids, settleableMO AVG report only all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Solids, settleableMO AVG report only all year
001Solids, settleableDAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 7.5 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 1.35 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .03 mg/L May, Jun, Jul, Aug, Sep, Oct
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1.4 tox acute (alert) all year
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 5.6 tox chronic (alert) all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1.4 tox acute (alert) all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 5.6 tox chronic (alert) all year
001Mercury, total [as Hg]DAILY MX <= 50 ng/L all year
001Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
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]MO AVG <= 280 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 450 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG report only all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Oxygen demand, ultimateDAILY MX <= 72 mg/L Jun, Jul, Aug, Sep, Oct
002Oxygen demand, ultimateDAILY MX report only Jun, Jul, Aug, Sep, Oct
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, settleableDAILY MX <= .3 mL/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, May, Nov, Dec
002Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualDAILY MX <= .03 mg/L May, Jun, Jul, Aug, Sep, Oct
002Flow, totalMO TOTAL report only all year
002Mercury, total [as Hg]DAILY MX <= 50 ng/L all year
002Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
002Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 25 mg/L all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002Solids, suspended percent removalMO AV MN >= 85 % all year
002Carbonaceous oxygen demand, % removalMO AV MN >= 85 % 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