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Alvarado, City of

Sewage treatment plant, major discharger, Alvarado, Texas. NPDES permit TX0126179, in force until Jan 30, 2028. Last 12 months: over a limit 41 times (last September 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (16 values)
Renewal application due
Aug 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
78 values over a limit, 0 required values missing, 8 of 12 reports late

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

All 41 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily average152 MPN/100mL≤ 126 MPN/100mL21%
October 2025E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
October 2025Nitrogen, ammonia total [as N], daily average23.5465 lb/d≤ 15 lb/d57%
October 2025Nitrogen, ammonia total [as N], daily average6.2 mg/L≤ 3 mg/L107%
October 2025Nitrogen, ammonia total [as N], daily maximum19.8 mg/L≤ 10 mg/L98%
November 2025BOD, carbonaceous [5 day, 20 C], daily average12 mg/L≤ 10 mg/L20%
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum34 mg/L≤ 25 mg/L36%
November 2025E. coli, daily average210 MPN/100mL≤ 126 MPN/100mL67%
November 2025E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
November 2025Nitrogen, ammonia total [as N], daily average19.3089 lb/d≤ 15 lb/d29%
November 2025Nitrogen, ammonia total [as N], daily average4.76 mg/L≤ 3 mg/L59%
December 2025E. coli, daily average142 MPN/100mL≤ 126 MPN/100mL13%
December 2025E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
January 2026E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
January 2026Nitrogen, ammonia total [as N], daily average3.39 mg/L≤ 3 mg/L13%
February 2026E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
March 2026E. coli, daily maximum1200 MPN/100mL≤ 399 MPN/100mL201%
April 2026BOD, carbonaceous [5 day, 20 C], daily average82.0646 lb/d≤ 50 lb/d64%
April 2026E. coli, daily maximum921 MPN/100mL≤ 399 MPN/100mL131%
April 2026Flow, in conduit or thru treatment plant, daily average.9884 MGD≤ .6 MGD65%
April 2026Solids, total suspended, daily average109.0766 lb/d≤ 75 lb/d45%
May 2026BOD, carbonaceous [5 day, 20 C], daily average26 mg/L≤ 10 mg/L160%
May 2026BOD, carbonaceous [5 day, 20 C], daily average81.6278 lb/d≤ 50 lb/d63%
May 2026BOD, carbonaceous [5 day, 20 C], daily maximum26 mg/L≤ 25 mg/L4%
May 2026E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
May 2026Flow, in conduit or thru treatment plant, daily average.851 MGD≤ .6 MGD42%
May 2026Solids, total suspended, daily average113.1217 lb/d≤ 75 lb/d51%
June 2026BOD, carbonaceous [5 day, 20 C], daily average74.0592 lb/d≤ 50 lb/d48%
June 2026E. coli, daily maximum1010 MPN/100mL≤ 399 MPN/100mL153%
June 2026Flow, in conduit or thru treatment plant, daily average.8166 MGD≤ .6 MGD36%
June 2026Solids, total suspended, daily average99.3086 lb/d≤ 75 lb/d32%
June 2026pH, minimum5 SU≥ 6 SU—
July 2026E. coli, daily maximum2420 MPN/100mL≤ 399 MPN/100mL507%
July 2026Flow, in conduit or thru treatment plant, daily average.6807 MGD≤ .6 MGD13%
August 2026BOD, carbonaceous [5 day, 20 C], daily average11 mg/L≤ 10 mg/L10%
August 2026BOD, carbonaceous [5 day, 20 C], daily average53.9077 lb/d≤ 50 lb/d8%
August 2026E. coli, daily maximum1120 MPN/100mL≤ 399 MPN/100mL181%
August 2026Flow, in conduit or thru treatment plant, daily average.612 MGD≤ .6 MGD2%
September 2026BOD, carbonaceous [5 day, 20 C], daily average55.4054 lb/d≤ 50 lb/d11%
September 2026E. coli, daily maximum411 MPN/100mL≤ 399 MPN/100mL3%
September 2026Flow, in conduit or thru treatment plant, daily average.6394 MGD≤ .6 MGD7%

Limits in force (16)

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 suspendeddaily maximum≤ 40 mg/Lall year
Solids, total suspendeddaily average≤ 75 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 15 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .6 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colidaily average≤ 126 MPN/100mLall year
E. colidaily maximum≤ 399 MPN/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 50 lb/dall year

Cited limits by parameter: Texas's rules and the federal ones.

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