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Evergy, Inc.

Electric Services, major discharger, Sibley, Missouri. NPDES permit MO0004871 expired Dec 31, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (6 values), form Q quarterly (20 values), form WA yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 17 reports late

Limits in force (28)

ParameterStatisticLimitMonths
Sulfate [as S]daily maximumreport only (mg/L)all year
Sulfate [as S]monthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily maximum≤ 100 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Oil and grease [soxhlet extr.] tot.daily maximum≤ 20 mg/Lall year
Oil and grease [soxhlet extr.] tot.monthly average≤ 15 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Arsenic, total recoverabledaily maximumreport only (ug/L)all year
Arsenic, total recoverablemonthly averagereport only (ug/L)all year
Selenium, total recoverabledaily maximumreport only (ug/L)all year
Selenium, total recoverablemonthly averagereport only (ug/L)all year
Boron, total recoverabledaily maximumreport only (ug/L)all year
Boron, total recoverablemonthly averagereport only (ug/L)all year
Molybdenum, total recoverabledaily maximumreport only (ug/L)all year
Molybdenum, total recoverablemonthly averagereport only (ug/L)all year
Chloridedaily maximumreport only (mg/L)all year
Chloridemonthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 3.3 toxicall year
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 3.3 toxicall year
Mercury, total recoverabledaily maximumreport only (ug/L)all year
Mercury, total recoverablemonthly averagereport only (ug/L)all year
Chlorides + Sulfatesdaily maximumreport only (mg/L)all year
Chlorides + Sulfatesmonthly averagereport only (mg/L)all year

How strict are these limits?

Cited limits by parameter: Missouri's rules and the federal ones.

Same industry: the 29 Electric Services permits in Missouri.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0004871 · MCP: https://passage-data.com/mcp