The Timken Co WHQ

NPDES permit OH0004189 · Minor NON-POTW · effective, expires 2027-05-31 · 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
0required values missing, on 0 form(s)
4of 15 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (18)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG report only Mar, Jun, Sep, Dec
001Solids, total suspendedDAILY MX report only Mar, Jun, Sep, Dec
001Oil and grease, hexane extr methodMO AVG report only Mar, Jun, Sep, Dec
001Oil and grease, hexane extr methodDAILY MX report only Mar, Jun, Sep, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Solids, total dissolved- 180 deg. CMO AVG report only Mar, Jun, Sep, Dec
001Solids, total dissolved- 180 deg. CDAILY MX report only Mar, Jun, Sep, Dec
002Solids, total suspendedMO AVG report only Mar, Jun, Sep, Dec
002Solids, total suspendedDAILY MX report only Mar, Jun, Sep, Dec
002Oil and grease, hexane extr methodMO AVG report only Mar, Jun, Sep, Dec
002Oil and grease, hexane extr methodDAILY MX report only Mar, Jun, Sep, Dec
002Flow, in conduit or thru treatment plantMO AVG report only Mar, Jun, Sep, Dec
002Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec

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