Donaldsonville, City Of
Donaldsonville, LA · Ascension County · Publicly Owned Treatment Works
- Average flow
- 1.34 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- LA0043931
- Effective
- Permit expires
- March 2029
- Population served
- 8,135
- CWNS 2022
Donaldsonville, City Of is a publicly owned wastewater treatment plant in Donaldsonville, Ascension County, Louisiana treating an average of 1.34 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 8,135 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit LA0043931 (effective), which expires in March 2029, with 18 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 16
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Donaldsonville, City Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Donaldsonville, City Of, plus the full compliance history and discharge data.
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Donaldsonville, City Of: frequently asked 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 September 11, 2026; facility record last updated April 24, 2025.