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Aqua-Zyme Services Inc

Sewerage Systems, Van Vleck, Texas. NPDES permit TX0070297, in force until Jun 13, 2030. Last 12 months: over a limit 14 times (last July 2026), 2 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values), form Q quarterly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
46 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], monthly minimum5.23 mg/L≥ 6 mg/L13%
November 2025Oxygen, dissolved [DO], monthly minimum5.82 mg/L≥ 6 mg/L3%
December 2025Oxygen, dissolved [DO], monthly minimum5.75 mg/L≥ 6 mg/L4%
December 2025Solids, total suspended, daily average29.2 mg/L≤ 20 mg/L46%
December 2025Solids, total suspended, single grab sample76.7 mg/L≤ 65 mg/L18%
January 2026Oxygen, dissolved [DO], monthly minimum5.71 mg/L≥ 6 mg/L5%
January 2026Solids, total suspended, daily average29.5 mg/L≤ 20 mg/L48%
February 2026Oxygen, dissolved [DO], monthly minimum5.94 mg/L≥ 6 mg/L1%
March 2026Oxygen, dissolved [DO], monthly minimum5.77 mg/L≥ 6 mg/L4%
March 2026Solids, total suspended, daily average32.3 mg/L≤ 20 mg/L62%
April 2026Oxygen, dissolved [DO], monthly minimum5.62 mg/L≥ 6 mg/L6%
May 2026Oxygen, dissolved [DO], monthly minimum5.5 mg/L≥ 6 mg/L8%
May 2026Solids, total suspended, daily average22.6 mg/L≤ 20 mg/L13%
July 2026Solids, total suspended, daily average26.6 mg/L≤ 20 mg/L33%

Limits in force (20)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. Csingle grab sample≤ 65 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 1.7 lb/dall year
Oxygen demand, chem. [high level] [COD]daily average≤ 200 mg/Lall year
Oxygen demand, chem. [high level] [COD]daily average≤ 17 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 20 mg/Lall year
Solids, total suspendedsingle grab sample≤ 65 mg/Lall year
Solids, total suspendeddaily average≤ 1.7 lb/dall year
Oil & Greasedaily average≤ 15 mg/Lall year
Oil & Greasesingle grab sample≤ 20 mg/Lall year
Oil & Greasedaily average≤ 1.3 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .01 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 399 CFU/100mLall year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0070297 · MCP: https://passage-data.com/mcp