Clean Water Act
SOUTH WASTEWATER TREATMENT PLANT
Quick Summary
- •Assessed $0 in total penalties since records began.
- Address
-
1 1/4 MILE SO. CONWAY
MISSION, TX 78572
View on map ↗ - County
- HIDALGO County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 22132
- Inspections
- 4 · last Oct 7, 2025
- Total Penalties
- $0
- Registry ID
- 110000753391
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Permit Violations - Violation Specified in Comment | Oct 7, 2025 | Oct 14, 2025 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Feb 13, 2024 | Feb 27, 2024 | Resolved |
| cwa | Schedule Event unachieved and not reported | Sep 7, 2021 | Mar 2, 2022 | Resolved |
| cwa | Schedule Event unachieved but reported | Sep 7, 2021 | Mar 2, 2022 | Resolved |
| cwa | Schedule Event achieved late but reported | Sep 7, 2021 | — | Open |
| cwa | Schedule Event reported late | Sep 7, 2021 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 17, 2007 | Dec 3, 2007 | Resolved |
| cwa | Schedule Event achieved late but reported | Jan 17, 2007 | — | Open |
| cwa | Schedule Event unachieved and not reported | Nov 24, 2003 | Jun 21, 2004 | Resolved |
| cwa | Schedule Event achieved late but reported | Nov 24, 2003 | — | Open |
| cwa | Schedule Event achieved late but reported | Jun 1, 1996 | — | Open |
| cwa | Schedule Event achieved late but reported | Jan 1, 1995 | — | Open |
| cwa | Schedule Event unachieved and not reported | Jan 1, 1995 | Jun 20, 1995 | Resolved |
| cwa | Permit Violations - Violation Specified in Comment | Sep 26, 1994 | Feb 22, 1995 | Resolved |
| cwa | Schedule Event achieved late but reported | Dec 21, 1993 | — | Open |
| cwa | Reporting Violations - Noncompliance with Section 308 Information Request | Sep 5, 1991 | — | Open |
| cwa | Schedule Event achieved late but reported | Dec 31, 1986 | — | Open |
| cwa | Schedule Event unachieved and not reported | Dec 31, 1986 | Aug 26, 1987 | Resolved |
| cwa | Schedule Event achieved late but reported | Jul 31, 1985 | — | Open |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 71.00 % | 95.00 | +25% | Dec 2022 | Open |
| Whole Effluent Toxicity [WET] - C. dubia | DMR, Limited - Numeric Violation | 71.00 % | 95.00 | +25% | Dec 2022 | Open |
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 71.00 % | 95.00 | +25% | Dec 2022 | Open |
| E. coli | DMR, Limited - Numeric Violation | 468.00 MPN/100mL | 399.00 | +17% | Feb 2021 | Open |
| E. coli | DMR, Limited - Numeric Violation | 488.00 MPN/100mL | 399.00 | +22% | Feb 2019 | Open |
| E. coli | DMR, Limited - Numeric Violation | 470.00 MPN/100mL | 399.00 | +18% | Sep 2018 | Open |
| E. coli | DMR, Limited - Numeric Violation | 550.00 MPN/100mL | 399.00 | +38% | Jun 2018 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 7.40 mg/L | 7.00 | +6% | Oct 2017 | Open |
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 0.00 % | 95.00 | +100% | Mar 2017 | Open |
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 0.00 % | 95.00 | +100% | Mar 2017 | Open |
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 93.00 % | 95.00 | +2% | Mar 2015 | Open |
| Whole effluent toxicity | DMR, Limited - Overdue | 93.00 % | 95.00 | +2% | Mar 2015 | Open |
| Whole effluent toxicity | DMR, Limited - Numeric Violation | 93.00 % | 95.00 | +2% | Mar 2015 | Open |
| Whole effluent toxicity | DMR, Limited - Overdue | 93.00 % | 95.00 | +2% | Mar 2015 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
State CWA Non Penalty AO
Clean Water Act
· Case TX-N00007196 · Nov 18, 2006
State CWA Non Penalty AO
Clean Water Act
· Case TX-N00004513 · Sep 25, 2003
State CWA Non Penalty AO
Clean Water Act
· Case TX-N00004111 · Feb 24, 2002
CWA 309A AO For Compliance
Clean Water Act
· Case 06-2002-N142 · Nov 28, 2001
CWA 309A AO For Compliance
Clean Water Act
· Case 06-2001-N610 · Jun 6, 2001
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1995-N298 · Jun 20, 1995
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1995-N214 · Feb 22, 1995
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1994-N411 · Jun 6, 1994
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1994-N291 · Feb 25, 1994
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1994-N388 · Nov 22, 1993
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1993-N485 · May 13, 1993
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1986-N151 · Dec 31, 1985
CWA 309A AO For Compliance
Clean Water Act
· Case 06-1985-N118 · May 29, 1985
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