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Undine Texas Environmental LLC

Sewerage Systems, Rosharon, Texas. NPDES permit TX0093823, in force until May 28, 2029. Last 12 months: over a limit 10 times (last June 2026), 1 required value missing, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 8 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily average3.32 mg/L≤ 3 mg/L11%
October 2025Nitrogen, ammonia total [as N], single grab sample15.9 mg/L≤ 15 mg/L6%
November 2025Solids, total suspended, daily average33.38 mg/L≤ 15 mg/L123%
November 2025Solids, total suspended, single grab sample98 mg/L≤ 60 mg/L63%
January 2026E. coli, colony forming units [CFU], single grab sample24200 CFU/100mL≤ 399 CFU/100mL5965%
January 2026Solids, total suspended, daily average22.75 mg/L≤ 15 mg/L52%
February 2026Nitrogen, ammonia total [as N], single grab sample21.3 mg/L≤ 15 mg/L42%
March 2026E. coli, colony forming units [CFU], single grab sample649 CFU/100mL≤ 399 CFU/100mL63%
March 2026Solids, total suspended, daily average15.38 mg/L≤ 15 mg/L3%
June 2026E. coli, colony forming units [CFU], single grab sample2420 CFU/100mL≤ 399 CFU/100mL507%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall 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≤ 18 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 3.6 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .145 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. coli, colony forming units [CFU]daily average≤ 126 CFU/100mLall year
E. coli, colony forming units [CFU]single grab sample≤ 399 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]single grab sample≤ 35 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 12 lb/dall year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0093823 · MCP: https://passage-data.com/mcp