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Comanche Peak Power Company LLC

Electric Services, major discharger, Glen Rose, Texas. NPDES permit TX0065854, in force until Jul 8, 2031. Last 12 months: no values over a limit, 3 of 60 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (10 values), outfall 002 form A monthly (8 values), outfall 003 form A monthly (12 values), outfall 004 form A monthly (8 values), outfall 104 form A monthly (6 values), outfall TX1 form Q quarterly, and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 65 reports late

Limits in force (70)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily average≤ 113 deg Fall year001
Temperature, water deg. fahrenheitdaily maximum≤ 116 deg Fall year001
Flow, in conduit or thru treatment plantdaily average≤ 3168 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 3168 MGDall year001
Chlorine, total residualdaily maximum≤ .2 mg/Lall year001
Chlorine, total residualdaily maximum≤ 880 lb/dall year001
Chlorine, free availabledaily average≤ .2 mg/Lall year001
Chlorine, free availabledaily maximum≤ .5 mg/Lall year001
Chlorine, free availabledaily average≤ 440 lb/dall year001
Chlorine, free availabledaily maximum≤ 1101 lb/dall year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendeddaily average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 100 mg/Lall year002
Oil & Greasedaily average≤ 15 mg/Lall year002
Oil & Greasedaily maximum≤ 20 mg/Lall year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
BOD, 5-day, 20 deg. Cdaily average≤ 20 mg/Lall year003
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year003
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendeddaily average≤ 20 mg/Lall year003
Solids, total suspendeddaily maximum≤ 45 mg/Lall year003
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year003
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year003
E. colidaily geometric mean≤ 126 MPN/100mLall year003
E. colidaily maximum≤ 399 MPN/100mLall year003
pHminimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
Solids, total suspendeddaily average≤ 30 mg/Lall year004
Solids, total suspendeddaily maximum≤ 100 mg/Lall year004
Oil & Greasedaily average≤ 15 mg/Lall year004
Oil & Greasedaily maximum≤ 20 mg/Lall year004
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Copper, total [as Cu]daily average≤ .5 mg/Lall year104
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year104
Iron, total [as Fe]daily average≤ 1 mg/Lall year104
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year104
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year104
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year104
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LC50 Pass/Fail Static 24Hr Acute D. Pulexsingle samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute Pimephales promelassingle samplereport only (pass=0;fail=1)all yearTXA

How strict are these limits?

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

Same industry: the 87 Electric Services permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0065854 · MCP: https://passage-data.com/mcp