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Maxey Road Water Supply Corp

Sewerage Systems, Houston, Texas. NPDES permit TX0105406, in force until Jun 23, 2028. Last 12 months: over a limit 14 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (16 values), form Q quarterly (2 values)
Renewal application due
Dec 26, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
14 values over a limit, 5 required values missing, 1 of 16 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
January 2026Solids, total suspended, daily average18.4 mg/L≤ 15 mg/L23%
February 2026Solids, total suspended, daily average36.2 mg/L≤ 15 mg/L141%
March 2026BOD, carbonaceous [5 day, 20 C], daily average17.8 mg/L≤ 10 mg/L78%
March 2026Nitrogen, ammonia total [as N], daily average9.15 mg/L≤ 5 mg/L83%
March 2026Oxygen, dissolved [DO], monthly minimum3.6 mg/L≥ 4 mg/L10%
March 2026Solids, total suspended, daily average67.2 mg/L≤ 15 mg/L348%
March 2026Solids, total suspended, single grab sample136 mg/L≤ 60 mg/L127%
April 2026Oxygen, dissolved [DO], monthly minimum2.4 mg/L≥ 4 mg/L40%
April 2026Solids, total suspended, daily average27 mg/L≤ 15 mg/L80%
April 2026Solids, total suspended, single grab sample77 mg/L≤ 60 mg/L28%
May 2026Oxygen, dissolved [DO], monthly minimum3.4 mg/L≥ 4 mg/L15%
June 2026E. coli, daily average180 MPN/100mL≤ 63 MPN/100mL186%
June 2026Oxygen, dissolved [DO], monthly minimum2 mg/L≥ 4 mg/L50%
September 2026Solids, total suspended, daily average17.9 mg/L≤ 15 mg/L19%

Limits in force (21)

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≤ 1.9 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/LApr–Oct
Nitrogen, ammonia total [as N]daily average≤ 5 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/LApr–Oct
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]daily average≤ .4 lb/dApr–Oct
Nitrogen, ammonia total [as N]daily average≤ .6 lb/dJan, Feb, Mar, Nov, Dec
Flow, in conduit or thru treatment plantdaily average≤ .015 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 MPN/100mLall year
E. colisingle grab sample≤ 200 MPN/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≤ 1.3 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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Your permit document is the final word. As JSON: /api/v1/permits/TX0105406 · MCP: https://passage-data.com/mcp