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Sheridan Water Supply Corporation

Sewerage Systems, Sheridan, Texas. NPDES permit TX0103781, in force until Dec 13, 2029. Last 12 months: over a limit 9 times (last August 2026), 16 required values missing, 3 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (16 values), form Q quarterly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
June 2026Nitrogen, ammonia total [as N], single grab sample19.4 mg/L≤ 15 mg/L29%
July 2026Nitrogen, ammonia total [as N], daily average16.6933 lb/d≤ 7.6 lb/d120%
July 2026Nitrogen, ammonia total [as N], daily average16.6933 lb/d≤ 7.6 lb/d120%
July 2026Nitrogen, ammonia total [as N], daily average32.21 mg/L≤ 12 mg/L168%
July 2026Nitrogen, ammonia total [as N], daily average32.21 mg/L≤ 12 mg/L168%
July 2026Nitrogen, ammonia total [as N], single grab sample58.8 mg/L≤ 15 mg/L292%
July 2026Nitrogen, ammonia total [as N], single grab sample58.8 mg/L≤ 15 mg/L292%
August 2026Nitrogen, ammonia total [as N], daily average15.23 mg/L≤ 12 mg/L27%
August 2026Nitrogen, ammonia total [as N], single grab sample86.7 mg/L≤ 15 mg/L478%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 2 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 20 mg/Lall year
Solids, total suspendedsingle grab sample≤ 65 mg/Lall year
Solids, total suspendeddaily average≤ 13 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 12 mg/Lall year
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 7.6 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .076 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
BOD, carbonaceous [5 day, 20 C]daily average≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]single grab sample≤ 65 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 13 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/TX0103781 · MCP: https://passage-data.com/mcp