Chlorine disinfection: wastewater treatment plants in Texas
14 plants · 1% of the state · 24 MGD reported by 13 plants
Klarifi identifies 14 publicly owned wastewater treatment plants with chlorine disinfection in Texas, 1% of the 1,244 plants in the state (24 MGD reported by 13 plants). The largest is West District Wastewater Treatment Plant in Baytown at 6.53 MGD.
Chlorine or chloramine disinfection, often followed by dechlorination before discharge, remains the most common effluent disinfection in the United States. Plants on gas chlorine are candidates for conversion to hypochlorite or UV, a recurring capital project driven by safety rules and permit limits on residual chlorine.
The largest plants with chlorine disinfection in Texas
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | West District Wastewater Treatment Plant | Baytown | 6.53 | TX0072834 | Oct 2029 | 4 |
| 2 | Central District Wastewater Treatment Plant | Baytown | 6.24 | TX0020109 | Jun 2029 | 54 |
| 3 | City Of Ennis Wastewater Treatment Plant | Ennis | 3.87 | TX0047261 | Jul 2028 | 3 |
| 4 | City Of Cotulla WWTP | Cotulla | 1.71 | TX0027499 | Jan 2031 | 7 |
| 5 | City Of Alamo WWTP | Alamo | 1.49 | TX0057622 | Dec 2030 | 179 |
| 6 | Southside WWTP | Crockett | 1.07 | TX0025895 | Mar 2028 | 6 |
| 7 | Athens West WWTP | Athens | 0.83 | TX0025364 | May 2027 | 3 |
| 8 | El Paso County Wcid 4 WWTP | Fabens | 0.63 | TX0065013 | Feb 2030 | 7 |
| 9 | City Of Daingerfield WWTF | Daingerfield | 0.61 | TX0027031 | May 2026 | 106 |
| 10 | City Of Breckenridge WWTF | Breckenridge | 0.58 | TX0023213 | Aug 2029 | 30 |
Contacts and project signals for every plant on this list
Klarifi adds verified decision-maker contacts, permit limits, discharge monitoring data and the capital projects planned in each city, filterable by technology, size and compliance record.
Other technologies in Texas
Chlorine disinfection in other states
Chlorine disinfection in Texas: questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026.
Wastewater terms: Tertiary treatment · Ozonation · WWTP · Significant industrial user · Biosolids · all terms