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Sewerage Systems, Alvarado, Texas. NPDES permit TX0137987, in force until Jul 17, 2028. Last 12 months: over a limit 24 times (last August 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | BOD, 5-day, 20 deg. C, daily average | 110.6 mg/L | ≤ 20 mg/L | 453% |
| October 2025 | BOD, 5-day, 20 deg. C, single grab sample | 142 mg/L | ≤ 65 mg/L | 118% |
| October 2025 | E. coli, daily average | 1046 CFU/100mL | ≤ 126 CFU/100mL | 730% |
| October 2025 | E. coli, single grab sample | 1046 CFU/100mL | ≤ 399 CFU/100mL | 162% |
| October 2025 | Solids, total suspended, daily average | 33.6 mg/L | ≤ 20 mg/L | 68% |
| November 2025 | BOD, 5-day, 20 deg. C, daily average | 89.75 mg/L | ≤ 20 mg/L | 349% |
| November 2025 | BOD, 5-day, 20 deg. C, single grab sample | 124 mg/L | ≤ 65 mg/L | 91% |
| November 2025 | Solids, total suspended, daily average | 24.75 mg/L | ≤ 20 mg/L | 24% |
| December 2025 | BOD, 5-day, 20 deg. C, daily average | 43.33 mg/L | ≤ 20 mg/L | 117% |
| February 2026 | BOD, 5-day, 20 deg. C, daily average | 27 mg/L | ≤ 20 mg/L | 35% |
| April 2026 | BOD, 5-day, 20 deg. C, daily average | 35.6 mg/L | ≤ 20 mg/L | 78% |
| April 2026 | BOD, 5-day, 20 deg. C, single grab sample | 91 mg/L | ≤ 65 mg/L | 40% |
| April 2026 | Solids, total suspended, daily average | 34.6 mg/L | ≤ 20 mg/L | 73% |
| April 2026 | Solids, total suspended, single grab sample | 80 mg/L | ≤ 65 mg/L | 23% |
| May 2026 | BOD, 5-day, 20 deg. C, daily average | 30.5 mg/L | ≤ 20 mg/L | 53% |
| May 2026 | Solids, total suspended, daily average | 24.25 mg/L | ≤ 20 mg/L | 21% |
| June 2026 | BOD, 5-day, 20 deg. C, daily average | 33.6 mg/L | ≤ 20 mg/L | 68% |
| June 2026 | BOD, 5-day, 20 deg. C, single grab sample | 73 mg/L | ≤ 65 mg/L | 12% |
| June 2026 | Solids, total suspended, daily average | 27.8 mg/L | ≤ 20 mg/L | 39% |
| July 2026 | BOD, 5-day, 20 deg. C, daily average | 35.25 mg/L | ≤ 20 mg/L | 76% |
| July 2026 | BOD, 5-day, 20 deg. C, single grab sample | 97 mg/L | ≤ 65 mg/L | 49% |
| July 2026 | Solids, total suspended, daily average | 33.25 mg/L | ≤ 20 mg/L | 66% |
| July 2026 | Solids, total suspended, single grab sample | 104 mg/L | ≤ 65 mg/L | 60% |
| August 2026 | BOD, 5-day, 20 deg. C, daily average | 25 mg/L | ≤ 20 mg/L | 25% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 2 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily average | ≤ 20 mg/L | all year |
| BOD, 5-day, 20 deg. C | single grab sample | ≤ 65 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily average | ≤ 5 lb/d | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | daily average | ≤ 20 mg/L | all year |
| Solids, total suspended | single grab sample | ≤ 65 mg/L | all year |
| Solids, total suspended | daily average | ≤ 5 lb/d | all year |
| Flow, in conduit or thru treatment plant | daily average | ≤ .03 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | monthly minimum | ≥ 1 mg/L | all year |
| Chlorine, total residual | monthly maximum | ≤ 4 mg/L | all year |
| E. coli | daily average | ≤ 126 CFU/100mL | all year |
| E. coli | single grab sample | ≤ 399 CFU/100mL | all year |
Cited limits by parameter: Texas's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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