ONTARIO (T)

NPDES permit NY0027171 · Major POTW · administratively continued, expires 2023-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-02-28 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

6values over a limit
1required values missing, on 1 form(s)
1of 17 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (4), BOD, carbonaceous [5 day, 20 C] (2).

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 (49)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 10 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX <= 83.4 lb/d all year
001Solids, total suspendedDAILY MX <= 83 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Solids, settleableDAILY MX <= .1 mL/L all year
001Solids, settleableDAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 1.2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 1.8 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 10 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 15 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX <= 1 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX <= 21 ug/L all year
001Zinc, total [as Zn]DAILY MX <= 190 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG <= 1 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG <= 1 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= .1 mg/L all year
001Chlorine, total residualDAILY MX <= 20 ug/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= 30 ug/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Mercury, total [as Hg]DAILY MX <= 50 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 50 ng/L all year
001Mercury, total [as Hg]DAILY MX report only 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 report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 12 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 100 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous 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