Evergy, Inc.

NPDES permit MO0004871 · Major NON-POTW · administratively continued, expires 2024-12-31 · 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 2024-12-31 and is administratively continued: 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)
0of 16 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MO permits in EPA's filings — check your permit).

Limits in force (28)

OutfallParameterStatisticLimitMonths
020Sulfate [as S]DAILY MX report only all year
020Sulfate [as S]MO AVG report only all year
020pHMINIMUM >= 6.5 SU all year
020pHMAXIMUM <= 9 SU all year
020Solids, total suspendedDAILY MX <= 100 mg/L all year
020Solids, total suspendedMO AVG <= 30 mg/L all year
020Oil and grease [soxhlet extr.] tot.DAILY MX <= 20 mg/L all year
020Oil and grease [soxhlet extr.] tot.MO AVG <= 15 mg/L all year
020Phosphorus, total [as P]DAILY MX report only all year
020Phosphorus, total [as P]MO AVG report only all year
020Arsenic, total recoverableDAILY MX report only all year
020Arsenic, total recoverableMO AVG report only all year
020Selenium, total recoverableDAILY MX report only all year
020Selenium, total recoverableMO AVG report only all year
020Boron, total recoverableDAILY MX report only all year
020Boron, total recoverableMO AVG report only all year
020Molybdenum, total recoverableDAILY MX report only all year
020Molybdenum, total recoverableMO AVG report only all year
020ChlorideDAILY MX report only all year
020ChlorideMO AVG report only all year
020Flow, in conduit or thru treatment plantDAILY MX report only all year
020Flow, in conduit or thru treatment plantMO AVG report only all year
020Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 3.3 toxic all year
020Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 3.3 toxic all year
020Mercury, total recoverableDAILY MX report only all year
020Mercury, total recoverableMO AVG report only all year
020Chlorides + SulfatesDAILY MX report only all year
020Chlorides + SulfatesMO AVG 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