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Sewage treatment plant, major discharger, Port Lavaca, Texas. NPDES permit TX0047562, in force until Aug 27, 2031. Last 12 months: over a limit 2 times (last April 2026), 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| March 2026 | Enterococci, daily maximum | 2419.6 MPN/100mL | ≤ 104 CFU/100mL | 2227% |
| April 2026 | Enterococci, daily maximum | 202.9 CFU/100mL | ≤ 104 CFU/100mL | 95% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | monthly minimum | ≥ 2 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 20 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily average | ≤ 334 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | daily average | ≤ 334 lb/d | all year | 001 |
| Copper, total [as Cu] | daily average | ≤ 11.1 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 23.5 ug/L | all year | 001 |
| Copper, total [as Cu] | daily average | ≤ .185 lb/d | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ 75.19 ug/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 159.07 ug/L | all year | 001 |
| Zinc, total [as Zn] | daily average | ≤ 1.25 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | 2-hour peak | ≤ 5319 gal/min | all year | 001 |
| Flow, in conduit or thru treatment plant | annual average | ≤ 2 MGD | all year | 001 |
| Enterococci | daily average | ≤ 35 CFU/100mL | all year | 001 |
| Enterococci | daily maximum | ≤ 104 CFU/100mL | all year | 001 |
| Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | ≥ 55 % | all year | TX1 |
| Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | ≥ 55 % | all year | TX1 |
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia) | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (pass=0;fail=1) | all year | TX1 |
| IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 7-day minimum | report only (%) | all year | TX1 |
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | report only (%) | all year | TX1 |
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 7-day minimum | report only (%) | all year | TX1 |
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | monthly average minimum | report only (%) | all year | TX1 |
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | single sample | report only (pass=0;fail=1) | all year | TXA |
| LC50 Pass/Fail Static 24Hr Acute Menidia beryllina | single grab sample | report only (pass=0;fail=1) | all year | TXA |
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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