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Midway Water Utilities Inc

Sewerage Systems, Houston, Texas. NPDES permit TX0090506, in force until Mar 3, 2028. Last 12 months: over a limit 11 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Renewal application due
Sep 5, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, daily average18 mg/L≤ 15 mg/L20%
October 2025Solids, total suspended, daily average20.1 lb/d≤ 13 lb/d55%
November 2025Flow, in conduit or thru treatment plant, daily average.13 MGD≤ .1 MGD30%
February 2026Flow, in conduit or thru treatment plant, daily average.12 MGD≤ .1 MGD20%
March 2026Flow, in conduit or thru treatment plant, daily average.12 MGD≤ .1 MGD20%
April 2026Flow, in conduit or thru treatment plant, daily average.16 MGD≤ .1 MGD60%
May 2026Flow, in conduit or thru treatment plant, daily average.14 MGD≤ .1 MGD40%
June 2026Nitrogen, ammonia total [as N], single grab sample15.6 mg/L≤ 15 mg/L4%
July 2026Nitrogen, ammonia total [as N], daily average14.15 mg/L≤ 9 mg/L57%
July 2026Nitrogen, ammonia total [as N], single grab sample28.2 mg/L≤ 15 mg/L88%
August 2026Flow, in conduit or thru treatment plant, daily average.11 MGD≤ .1 MGD10%

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≤ 13 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 9 mg/Lall year
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 7.5 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .1 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≤ 63 CFU/100mLall year
E. colisingle grab sample≤ 200 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≤ 8.3 lb/dall 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/TX0090506 · MCP: https://passage-data.com/mcp