OSWEGO COUNTY

NPDES permit NY0155519 · Minor NON-POTW · effective, expires 2030-05-31 · 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.

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

2values over a limit
0required values missing, on 0 form(s)
1of 15 forms filed late

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (1), Temp. diff. between samp. & upstrm deg. F (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 (13)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 90 deg F all year
001Temperature, water deg. fahrenheitDAILY MX <= 97 deg F all year
001Temp. diff. between samp. & upstrm deg. FDAILY MX <= 14 deg F all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 8.5 SU all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Copper, total [as Cu]DAILY MX <= 100 ug/L (alert) all year
001Lead, total [as Pb]DAILY MX <= 35 ug/L (alert) all year
001Nickel, total [as Ni]DAILY MX <= 40 ug/L (alert) all year
001Zinc, total [as Zn]DAILY MX <= 200 ug/L (alert) all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [as Hg]DAILY MX <= 50 ng/L all year
001Mercury, total [as Hg]ROLL AVG <= 12 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