STOCKPORT (T)

NPDES permit NY0031291 · Minor POTW · effective, expires 2029-08-31 · 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.

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

2values over a limit
0required values missing, on 0 form(s)
3of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (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 (23)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. C3F <= 45 mg/L all year
001BOD, 5-day, 20 deg. C7G <= 65 mg/L all year
001BOD, 5-day, 20 deg. C3F <= 23 lb/d all year
001BOD, 5-day, 20 deg. C7G <= 33 lb/d all year
001BOD, 5-day, 20 deg. C3F report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended3F <= 45 mg/L all year
001Solids, total suspended7G <= 65 mg/L all year
001Solids, total suspended3F <= 23 lb/d all year
001Solids, total suspended7G <= 33 lb/d all year
001Solids, total suspended3F report only all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX <= .06 MGD all year
001Chlorine, total residualDAILY AV report only May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal general30DA GEO <= 200 #/100L May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal general7 DA GEO <= 400 #/100L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Solids, suspended percent removalMO AV MN >= 65 % 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