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Memorial Villages Water Authority

Sewage treatment plant, major discharger, Houston, Texas. NPDES permit TX0047457, in force until Aug 5, 2030. Last 12 months: over a limit 3 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (20 values), outfall TX1 form Q quarterly (26 values), outfall TXA form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 17 reports late

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

Period endingParameterReportedLimitOver by
April 2026Nitrogen, ammonia total [as N], daily average2.11 mg/L≤ 2 mg/L6%
June 2026Nitrogen, ammonia total [as N], daily average2.23 mg/L≤ 2 mg/L12%
June 2026Nitrogen, ammonia total [as N], daily maximum10.6 mg/L≤ 10 mg/L6%

Limits in force (52)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/LJan, Feb, Mar, Nov, Dec001
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/LApr–Oct001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 15 mg/Lall year001
Solids, total suspendeddaily maximum≤ 40 mg/Lall year001
Solids, total suspendeddaily average≤ 382 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 2 mg/LApr–Oct001
Nitrogen, ammonia total [as N]daily average≤ 3 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LApr–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily average≤ 51 lb/dApr–Oct001
Nitrogen, ammonia total [as N]daily average≤ 76 lb/dJan, Feb, Mar, Nov, Dec001
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≤ 6422 gal/minall year001
Flow, in conduit or thru treatment plantannual average≤ 3.05 MGDall year001
Chlorine, total residualinstantaneous maximum< .1 mg/Lall year001
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year001
E. colidaily average≤ 63 CFU/100mLall year001
E. colidaily maximum≤ 200 CFU/100mLall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 254 lb/dall year001
Whole effluent toxicity7-day minimum≥ 10 %all yearTX1
Whole effluent toxicitymonthly average minimum≥ 10 %all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic 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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0047457 · MCP: https://passage-data.com/mcp