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Evergy, Inc.

Electric Services, major discharger, St Joseph, Missouri. NPDES permit MO0004898 expired Jun 30, 2025; 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: outfall 001 form M monthly (24 values), outfall 002 form M monthly (18 values), outfall 003 form M monthly (12 values), outfall 01A form M monthly (2 values), outfall 03A form M monthly (8 values), outfall 03A form Q quarterly (8 values), and 2 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 66 reports late

Limits in force (78)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year001
Oxygen demand, chem. [high level] [COD]monthly averagereport only (mg/L)all year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 100 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 20 mg/Lall year001
Oil and grease [soxhlet extr.] tot.monthly average≤ 15 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Iron, total recoverabledaily maximumreport only (ug/L)all year001
Iron, total recoverablemonthly averagereport only (ug/L)all year001
Thallium, total [as Tl]daily maximumreport only (ug/L)all year001
Thallium, total [as Tl]monthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximum≤ 73.8 ug/Lall year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Nitrogen, Kjeldahl, total [TKN] [water]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [TKN] [water]monthly averagereport only (mg/L)all year001
Toxicity [chronic], Ceriodaphnia dubiavaluereport only (toxic)all year001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]valuereport only (toxic)all year001
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year002
Oxygen demand, chem. [high level] [COD]monthly averagereport only (mg/L)all year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendeddaily maximum≤ 50 mg/Lall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Oil and grease [soxhlet extr.] tot.daily maximum≤ 20 mg/Lall year002
Oil and grease [soxhlet extr.] tot.monthly average≤ 15 mg/Lall year002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year002
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year002
Phosphorus, total [as P]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]monthly averagereport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Nitrogen, Kjeldahl, total [TKN] [water]daily maximumreport only (mg/L)all year002
Nitrogen, Kjeldahl, total [TKN] [water]monthly averagereport only (mg/L)all year002
Toxicity [chronic], Ceriodaphnia dubiavaluereport only (toxic)all year002
Toxicity [chronic], Pimephales promelas [Fathead Minnow]valuereport only (toxic)all year002
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year003
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year003
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year003
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year003
Temp. diff. between up/down stream deg. Fdaily maximum≤ 5 deg Fall year003
Temp. diff. between up/down stream deg. Fmonthly averagereport only (deg F)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (cfs)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (cfs)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (cfs)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (cfs)all year003
Chlorine, free availabledaily maximum≤ 500 ug/Lall year01A
Chlorine, free availablemonthly average≤ 200 ug/Lall year01A
pHminimum≥ 6 SUall year03A
pHmaximum≤ 9 SUall year03A
Solids, total suspendeddaily maximum≤ 100 mg/Lall year03A
Solids, total suspendedmonthly average≤ 30 mg/Lall year03A
Oil and grease [soxhlet extr.] tot.daily maximum≤ 15 mg/Lall year03A
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year03A
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year03A
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year03A
Iron, total recoverabledaily maximumreport only (mg/L)all year03A
Iron, total recoverablemonthly averagereport only (mg/L)all year03A
Chloridedaily maximumreport only (mg/L)all year03A
Chloridemonthly averagereport only (mg/L)all year03A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year03A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year03A
Chlorides + Sulfatesdaily maximumreport only (mg/L)all year03A
Chlorides + Sulfatesmonthly averagereport only (mg/L)all year03A

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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0004898 · MCP: https://passage-data.com/mcp