Harris County Mud No 514 — NPDES permit TX0144118: limits, due date and EPA's record

Sewerage Systems, Humble Camp, Texas. NPDES permit TX0144118, in force until Nov 17, 2028. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.

Limits in force (21)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	monthly minimum	≥ 4 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 15 mg/L	all year
Solids, total suspended	single grab sample	≤ 60 mg/L	all year
Solids, total suspended	daily average	≤ 26 lb/d	all year
Nitrogen, ammonia total [as N]	daily average	≤ 3 mg/L	all year
Nitrogen, ammonia total [as N]	single grab sample	≤ 15 mg/L	all year
Nitrogen, ammonia total [as N]	daily average	≤ 5.3 lb/d	all year
Phosphorus, total [as P]	daily average	report only (mg/L)	all year
Phosphorus, total [as P]	single grab sample	report only (mg/L)	all year
Phosphorus, total [as P]	daily average	report only (lb/d)	all year
Flow, in conduit or thru treatment plant	daily average	≤ .21 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	monthly minimum	≥ 1 mg/L	all year
Chlorine, total residual	monthly maximum	≤ 4 mg/L	all year
E. coli	daily average	≤ 63 MPN/100mL	all year
E. coli	single grab sample	≤ 200 MPN/100mL	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 10 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	single grab sample	≤ 35 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 18 lb/d	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0144118 · MCP: https://passage-data.com/mcp