Passage Data · Check a report · Use it from your AI

Harris County Mud 570D

Sewerage Systems, Hockley, Texas. NPDES permit TX0140392 expired Sep 9, 2026; its limits still apply. Last 12 months: over a limit 14 times (last June 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (21 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
November 2025Phosphorus, total [as P], daily average.83 mg/L≤ .5 mg/L66%
November 2025Phosphorus, total [as P], single grab sample3.2 mg/L≤ 3 mg/L7%
March 2026E. coli, single grab sample2400 CFU/100mL≤ 200 CFU/100mL1100%
March 2026Nitrogen, ammonia total [as N], daily average10.96 lb/d≤ 6.3 lb/d74%
March 2026Nitrogen, ammonia total [as N], daily average9.94 mg/L≤ 3 mg/L231%
March 2026Nitrogen, ammonia total [as N], single grab sample42 mg/L≤ 15 mg/L180%
April 2026Nitrogen, ammonia total [as N], daily average5.49 mg/L≤ 3 mg/L83%
April 2026Nitrogen, ammonia total [as N], daily average9.85 lb/d≤ 6.3 lb/d56%
April 2026Nitrogen, ammonia total [as N], single grab sample22 mg/L≤ 15 mg/L47%
May 2026Phosphorus, total [as P], daily average1.29 mg/L≤ .5 mg/L158%
May 2026Phosphorus, total [as P], daily average1.81 lb/d≤ 1 lb/d81%
May 2026Phosphorus, total [as P], single grab sample5.1 mg/L≤ 3 mg/L70%
June 2026E. coli, single grab sample550 CFU/100mL≤ 200 CFU/100mL175%
June 2026Phosphorus, total [as P], daily average.71 mg/L≤ .5 mg/L42%

Limits in force (21)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 6 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≤ 31 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≤ 6.3 lb/dall year
Phosphorus, total [as P]daily average≤ .5 mg/Lall year
Phosphorus, total [as P]single grab sample≤ 3 mg/Lall year
Phosphorus, total [as P]daily average≤ 1 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .25 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≤ 21 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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0140392 · MCP: https://passage-data.com/mcp