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Olmito WSC

Sewerage Systems, major discharger, Olmito, Texas. NPDES permit TX0113875, in force until Aug 13, 2031. Last 12 months: over a limit 76 times (last August 2026), 4 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (18 values), outfall 002 form A monthly (18 values), outfall 101 form A monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
57 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 76 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], daily average16.3 mg/L≤ 10 mg/L63%
October 2025BOD, carbonaceous [5 day, 20 C], daily average74.8 lb/d≤ 63 lb/d19%
October 2025Nitrogen, ammonia total [as N], daily average21.05 mg/L≤ 5 mg/L321%
October 2025Nitrogen, ammonia total [as N], daily average98.7 lb/d≤ 31 lb/d218%
October 2025Nitrogen, ammonia total [as N], daily maximum21.8 mg/L≤ 10 mg/L118%
October 2025Oxygen, dissolved [DO], monthly minimum.36 mg/L≥ 4 mg/L91%
October 2025Solids, total suspended, daily average100.8 lb/d≤ 94 lb/d7%
October 2025Solids, total suspended, daily average22.6 mg/L≤ 15 mg/L51%
November 2025BOD, carbonaceous [5 day, 20 C], daily average12.9 mg/L≤ 10 mg/L29%
November 2025BOD, carbonaceous [5 day, 20 C], daily average76.36 lb/d≤ 63 lb/d21%
November 2025Nitrogen, ammonia total [as N], daily average14.53 mg/L≤ 5 mg/L191%
November 2025Nitrogen, ammonia total [as N], daily average85.46 lb/d≤ 31 lb/d176%
November 2025Nitrogen, ammonia total [as N], daily maximum17.8 mg/L≤ 10 mg/L78%
November 2025Oxygen, dissolved [DO], monthly minimum2.99 mg/L≥ 4 mg/L25%
November 2025Solids, total suspended, daily average110.9 lb/d≤ 94 lb/d18%
November 2025Solids, total suspended, daily average18.7 mg/L≤ 15 mg/L25%
December 2025BOD, carbonaceous [5 day, 20 C], daily average16.3 mg/L≤ 10 mg/L63%
December 2025BOD, carbonaceous [5 day, 20 C], daily average92.63 lb/d≤ 63 lb/d47%
December 2025Nitrogen, ammonia total [as N], daily average120.56 lb/d≤ 31 lb/d289%
December 2025Nitrogen, ammonia total [as N], daily average20.9 mg/L≤ 5 mg/L318%
December 2025Nitrogen, ammonia total [as N], daily maximum23.3 mg/L≤ 10 mg/L133%
December 2025Oxygen, dissolved [DO], monthly minimum3.49 mg/L≥ 4 mg/L13%
December 2025Solids, total suspended, daily average16.6 mg/L≤ 15 mg/L11%
December 2025Solids, total suspended, daily average94.88 lb/d≤ 94 lb/d1%
January 2026BOD, carbonaceous [5 day, 20 C], daily average12.3 mg/L≤ 10 mg/L23%
January 2026BOD, carbonaceous [5 day, 20 C], daily average69.98 lb/d≤ 63 lb/d11%
January 2026Nitrogen, ammonia total [as N], daily average127.48 lb/d≤ 31 lb/d311%
January 2026Nitrogen, ammonia total [as N], daily average22.5 mg/L≤ 5 mg/L350%
January 2026Nitrogen, ammonia total [as N], daily maximum25.8 mg/L≤ 10 mg/L158%
January 2026Oxygen, dissolved [DO], monthly minimum3.25 mg/L≥ 4 mg/L19%
January 2026Solids, total suspended, daily average118.21 lb/d≤ 94 lb/d26%
January 2026Solids, total suspended, daily average21.88 mg/L≤ 15 mg/L46%
February 2026BOD, carbonaceous [5 day, 20 C], daily average17.35 mg/L≤ 10 mg/L74%
February 2026BOD, carbonaceous [5 day, 20 C], daily average98.09 lb/d≤ 63 lb/d56%
February 2026Nitrogen, ammonia total [as N], daily average144.97 lb/d≤ 31 lb/d368%
February 2026Nitrogen, ammonia total [as N], daily average25.83 mg/L≤ 5 mg/L417%
February 2026Nitrogen, ammonia total [as N], daily maximum34.2 mg/L≤ 10 mg/L242%
February 2026Oxygen, dissolved [DO], monthly minimum3.32 mg/L≥ 4 mg/L17%
February 2026Solids, total suspended, daily average131 lb/d≤ 94 lb/d39%
February 2026Solids, total suspended, daily average23 mg/L≤ 15 mg/L53%
March 2026BOD, carbonaceous [5 day, 20 C], daily average10.2 mg/L≤ 10 mg/L2%
March 2026Chlorine, total residual, monthly minimum.99 mg/L≥ 1 mg/L1%
March 2026Nitrogen, ammonia total [as N], daily average108.05 lb/d≤ 31 lb/d249%
March 2026Nitrogen, ammonia total [as N], daily average20.95 mg/L≤ 5 mg/L319%
March 2026Nitrogen, ammonia total [as N], daily maximum24.8 mg/L≤ 10 mg/L148%
March 2026Oxygen, dissolved [DO], monthly minimum3.32 mg/L≥ 4 mg/L17%
April 2026BOD, carbonaceous [5 day, 20 C], daily average11.38 mg/L≤ 10 mg/L14%
April 2026Nitrogen, ammonia total [as N], daily average125.5 lb/d≤ 31 lb/d305%
April 2026Nitrogen, ammonia total [as N], daily average27.58 mg/L≤ 5 mg/L452%
April 2026Nitrogen, ammonia total [as N], daily maximum29.7 mg/L≤ 10 mg/L197%
April 2026Oxygen, dissolved [DO], monthly minimum2.91 mg/L≥ 4 mg/L27%
April 2026Solids, total suspended, daily maximum78.51 mg/L≤ 40 mg/L96%
May 2026BOD, carbonaceous [5 day, 20 C], daily average12.27 mg/L≤ 10 mg/L23%
May 2026BOD, carbonaceous [5 day, 20 C], daily average68.48 lb/d≤ 63 lb/d9%
May 2026Nitrogen, ammonia total [as N], daily average136.12 lb/d≤ 31 lb/d339%
May 2026Nitrogen, ammonia total [as N], daily average24.95 mg/L≤ 5 mg/L399%
May 2026Nitrogen, ammonia total [as N], daily maximum37.4 mg/L≤ 10 mg/L274%
May 2026Oxygen, dissolved [DO], monthly minimum2.69 mg/L≥ 4 mg/L33%
May 2026Solids, total suspended, daily average154.4 lb/d≤ 94 lb/d64%
May 2026Solids, total suspended, daily average26.9 mg/L≤ 15 mg/L79%
May 2026Solids, total suspended, daily maximum49.6 mg/L≤ 40 mg/L24%
June 2026Nitrogen, ammonia total [as N], daily average100.03 lb/d≤ 31 lb/d223%
June 2026Nitrogen, ammonia total [as N], daily average19.7 mg/L≤ 5 mg/L294%
June 2026Nitrogen, ammonia total [as N], daily maximum21 mg/L≤ 10 mg/L110%
June 2026Oxygen, dissolved [DO], monthly minimum2.87 mg/L≥ 4 mg/L28%
June 2026pH, minimum5.95 SU≥ 6 SU—
July 2026Nitrogen, ammonia total [as N], daily average16.2 mg/L≤ 5 mg/L224%
July 2026Nitrogen, ammonia total [as N], daily average85.65 lb/d≤ 31 lb/d176%
July 2026Nitrogen, ammonia total [as N], daily maximum19.8 mg/L≤ 10 mg/L98%
July 2026Oxygen, dissolved [DO], monthly minimum.55 mg/L≥ 4 mg/L86%
August 2026Nitrogen, ammonia total [as N], daily average11 mg/L≤ 5 mg/L120%
August 2026Nitrogen, ammonia total [as N], daily average60.19 lb/d≤ 31 lb/d94%
August 2026Nitrogen, ammonia total [as N], daily maximum13.6 mg/L≤ 10 mg/L36%
August 2026Oxygen, dissolved [DO], monthly minimum3.3 mg/L≥ 4 mg/L18%
August 2026Solids, total suspended, daily average155.56 lb/d≤ 94 lb/d65%
August 2026Solids, total suspended, daily average28.15 mg/L≤ 15 mg/L88%

Limits in force (39)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year001
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≤ 94 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 5 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily average≤ 31 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ .75 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year001
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year001
E. colidaily average≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 399 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≤ 63 lb/dall year001
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendeddaily average≤ 15 mg/Lall year002
Solids, total suspendeddaily maximum≤ 40 mg/Lall year002
Solids, total suspendeddaily average≤ 94 lb/dall year002
Nitrogen, ammonia total [as N]daily average≤ 5 mg/Lall year002
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year002
Nitrogen, ammonia total [as N]daily average≤ 31 lb/dall year002
Flow, in conduit or thru treatment plantdaily average≤ .75 MGDall year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year002
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year002
E. colidaily average≤ 126 CFU/100mLall year002
E. colidaily maximum≤ 399 CFU/100mLall year002
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]daily average≤ 63 lb/dall year002
Nitrogen, ammonia total [as N]daily average≤ 94 lb/dall year101
Flow, in conduit or thru treatment plantdaily average≤ .75 MGDall year101
BOD, carbonaceous [5 day, 20 C]daily average≤ 63 lb/dall year101

How strict are these limits?

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

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