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Study Butte Water Supply Corporation

Water Supply, Terlingua, Texas. NPDES permit TX0133183, in force until May 21, 2031. Last 12 months: no values over a limit, 1 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (10 values), form Q quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 16 reports late

Limits in force (13)

ParameterStatisticLimitMonths
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Chloride [as Cl]daily averagereport only (mg/L)all year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily averagereport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Radium 226, totaldaily maximum≤ 60 pCi/Lall year
Radium 228, totaldaily maximum≤ 60 pCi/Lall year
Uranium, total [in pci/L]daily maximum≤ 300 pCi/Lall year
Flow, in conduit or thru treatment plantdaily average≤ .2 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .4 MGDall year
Solids, total dissolveddaily averagereport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year

New limits from Jun 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chloride [as Cl], daily average785 mg/Lnew976 mg/L (11 values)1.24×
Chloride [as Cl], daily maximum1664 mg/Lnew982 mg/L (11 values)0.59×

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

Same industry: the 115 Water Supply 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/TX0133183 · MCP: https://passage-data.com/mcp