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Undine Texas Environmental, LLC

Sewerage Systems, Johnson County, Texas. NPDES permit TX0115991, in force until May 19, 2027. Last 12 months: over a limit 15 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (13 values), form Q quarterly
Renewal application due
Nov 20, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 2 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 15 values over a limit
Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, daily average25.25 mg/L≤ 10 mg/L153%
February 2026BOD, 5-day, 20 deg. C, single grab sample37 mg/L≤ 35 mg/L6%
March 2026BOD, 5-day, 20 deg. C, daily average53 mg/L≤ 10 mg/L430%
March 2026BOD, 5-day, 20 deg. C, single grab sample81 mg/L≤ 35 mg/L131%
March 2026Solids, total suspended, daily average30.8 mg/L≤ 15 mg/L105%
March 2026Solids, total suspended, single grab sample61 mg/L≤ 60 mg/L2%
April 2026BOD, 5-day, 20 deg. C, daily average25 mg/L≤ 10 mg/L150%
April 2026BOD, 5-day, 20 deg. C, single grab sample77 mg/L≤ 35 mg/L120%
April 2026Solids, total suspended, daily average35.75 mg/L≤ 15 mg/L138%
April 2026Solids, total suspended, single grab sample105 mg/L≤ 60 mg/L75%
May 2026BOD, 5-day, 20 deg. C, daily average15.25 mg/L≤ 10 mg/L53%
May 2026BOD, 5-day, 20 deg. C, single grab sample37 mg/L≤ 35 mg/L6%
May 2026Solids, total suspended, daily average16.5 mg/L≤ 15 mg/L10%
July 2026BOD, 5-day, 20 deg. C, daily average14 mg/L≤ 10 mg/L40%
August 2026BOD, 5-day, 20 deg. C, daily average14.5 mg/L≤ 10 mg/L45%

Limits in force (15)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Csingle grab sample≤ 35 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 2.5 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 15 mg/Lall year
Solids, total suspendedsingle grab sample≤ 60 mg/Lall year
Solids, total suspendeddaily average≤ 3.8 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .0305 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 399 CFU/100mLall year

How strict are these limits?

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

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/TX0115991 · MCP: https://passage-data.com/mcp