Dayton, City of

NPDES permit OH0096393 · Minor NON-POTW · expired, expires 2022-03-31 · 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.

This permit expired on 2022-03-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
6of 33 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 (30)

OutfallParameterStatisticLimitMonths
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Oil and grease, hexane extr methodMO AVG report only all year
002Oil and grease, hexane extr methodDAILY MX report only all year
002RainfallMO AVG report only all year
002RainfallDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003Oxygen, dissolved [DO]DAILY MN report only May, Jun, Jul, Aug, Sep, Oct
003Oxygen, dissolved [DO]DAILY MN report only Jan, Feb, Mar, Apr, Nov, Dec
003Oxygen demand, chem. [low level] [COD]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
003Oxygen demand, chem. [low level] [COD]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
003Oxygen demand, chem. [low level] [COD]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
003Oxygen demand, chem. [low level] [COD]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
003pHDAILY MN >= 6.5 SU May, Jun, Jul, Aug, Sep, Oct
003pHDAILY MN >= 6.5 SU Jan, Feb, Mar, Apr, Nov, Dec
003pHDAILY MX <= 9 SU May, Jun, Jul, Aug, Sep, Oct
003pHDAILY MX <= 9 SU Jan, Feb, Mar, Apr, Nov, Dec
003RainfallMO AVG report only all year
003RainfallDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only May, Jun, Jul, Aug, Sep, Oct
003Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
003Flow, in conduit or thru treatment plantDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
003Flow, in conduit or thru treatment plantDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
017Oxygen, dissolved [DO]DAILY MN report only all year
017Oxygen demand, chem. [low level] [COD]DAILY MX <= 200 mg/L all year
017pHDAILY MN >= 6.5 SU all year
017pHDAILY MX <= 9 SU all year
017Flow, in conduit or thru treatment plantMO AVG report only all year
017Flow, 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