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

Mont Belvieu, City of

Sewage treatment plant, major discharger, Mont Belvieu, Texas. NPDES permit TX0053317, in force until Aug 19, 2031. Last 12 months: over a limit 10 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (24 values), outfall TX1 form Q quarterly, outfall TXA form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 0 of 18 reports late

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

Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum1350 CFU/100mL≤ 399 CFU/100mL238%
December 2025E. coli, daily maximum1730 CFU/100mL≤ 399 CFU/100mL334%
March 2026E. coli, daily maximum2420 CFU/100mL≤ 399 CFU/100mL507%
May 2026E. coli, daily maximum2420 CFU/100mL≤ 399 CFU/100mL507%
June 2026Copper, total [as Cu], daily average.0564 lb/d≤ .045 lb/d25%
June 2026E. coli, daily maximum2420 CFU/100mL≤ 399 CFU/100mL507%
June 2026Flow, in conduit or thru treatment plant, 2-hour peak3263 gal/min≤ 3125 gal/min4%
July 2026E. coli, daily maximum4110 CFU/100mL≤ 399 CFU/100mL930%
September 2026Copper, total [as Cu], daily average.0057 mg/L≤ .0036 mg/L58%
September 2026Copper, total [as Cu], daily maximum.00814 mg/L≤ .0077 mg/L6%

Limits in force (38)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, total suspendeddaily average≤ 300 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 1.5 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/Lall year001
Nitrogen, ammonia total [as N]daily average≤ 38 lb/dall year001
Copper, total [as Cu]daily average≤ .0036 mg/Lall year001
Copper, total [as Cu]daily maximum≤ .0077 mg/Lall year001
Copper, total [as Cu]daily average≤ .09 lb/dall year001
Aluminum, total [as Al]daily average≤ .835 mg/Lall year001
Aluminum, total [as Al]daily maximum≤ 1.766 mg/Lall year001
Aluminum, total [as Al]daily average≤ 21 lb/dall year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plant2-hour peak≤ 6250 gal/minall year001
Flow, in conduit or thru treatment plantannual average≤ 3 MGDall year001
E. colidaily average≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 399 CFU/100mLall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 5 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 125 lb/dall year001
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48-hour minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexmonthly average minimumreport only (pass=0;fail=1)all yearTX1
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (pass=0;fail=1)all yearTX1
LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48-hour minimumreport only (%)all yearTX1
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexmonthly average minimumreport only (%)all yearTX1
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48-hour minimumreport only (%)all yearTX1
NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex48-hour minimumreport only (%)all yearTX1
LOAEC Lethal Static Renewal 48HR Acute Daphnia pulexmonthly average minimumreport only (%)all yearTX1
LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas48-hour minimumreport only (%)all yearTX1
LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LC50 Pass/Fail Static 24Hr Acute D. Pulexsingle samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute Pimephales promelassingle samplereport only (pass=0;fail=1)all yearTXA

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/TX0053317 · MCP: https://passage-data.com/mcp