Portsmouth Water Treatment Plant

NPDES permit OH0008621 · Minor NON-POTW · effective, expires 2031-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
11required values missing, on 2 form(s)
0of 32 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (26)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only 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 residualDAILY MX <= .038 mg/L all year
001Trihalomethane, tot.MO AVG report only Mar, Jun, Aug, Dec
001Trihalomethane, tot.DAILY MX report only Mar, Jun, Aug, Dec
002pHDAILY MN report only all year
002pHDAILY MX report only all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Chlorine, total residualDAILY MX report only all year
002Bypass VolumeMO AVG report only all year
002Bypass VolumeDAILY MX report only all year
002Bypass valveMO AVG report only all year
002Bypass valveDAILY MX report only all year
002Bypass of treatmentMO AVG report only all year
002Bypass of treatmentDAILY MX report only all year
002Trihalomethane, tot.MO AVG report only all year
002Trihalomethane, tot.DAILY MX report only all year
800Solids, total suspendedMO AVG report only all year
800Solids, total suspendedDAILY MX report only all year
800Flow, in conduit or thru treatment plantMO AVG report only all year
800Flow, in conduit or thru treatment plantDAILY MX report only 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