CITY OF TROY

NPDES permit NY0205401 · Minor NON-POTW · effective, expires 2031-04-30 · 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

49values over a limit
0required values missing, on 0 form(s)
4of 30 forms filed late

Last period with anything received: 2026-07-31. Most often over: Manganese, total [as Mn] (19), Chlorine, total residual (9), Iron, total [as Fe] (9).

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 (32)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Solids, settleableMO AVG report only all year
001Solids, settleableDAILY MX <= .1 mL/L all year
001Fluoride, total [as F]DAILY MX report only all year
001Iron, total [as Fe]MO AVG report only all year
001Iron, total [as Fe]DAILY MX <= .3 mg/L all year
001Manganese, total [as Mn]MO AVG <= 2 mg/L all year
001Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
001Aluminum, dissolved [as Al]DAILY MX <= .5 mg/L (alert) all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG report only all year
001Chlorine, total residualDAILY MX <= .02 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedMO AVG <= 20 mg/L all year
003Solids, total suspendedDAILY MX <= 40 mg/L all year
003Solids, settleableMO AVG report only all year
003Solids, settleableDAILY MX <= .1 mL/L all year
003Fluoride, total [as F]DAILY MX report only all year
003Iron, total [as Fe]MO AVG report only all year
003Iron, total [as Fe]DAILY MX <= .3 mg/L all year
003Manganese, total [as Mn]MO AVG <= 2 mg/L all year
003Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
003Aluminum, dissolved [as Al]DAILY MX <= .5 mg/L (alert) all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residualMO AVG report only all year
003Chlorine, total residualDAILY MX <= .02 mg/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