Rayville WWTF
138 Gin Rd / US Hwy 80, Rayville, LA 71269 · Richland County · Publicly Owned Treatment Works
- Average flow
- 1.29 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- LA0020559
- Effective
- Permit expires
- May 2028
- Population served
- 3,781
- CWNS 2022
Rayville WWTF is a publicly owned wastewater treatment works in Rayville, Richland County, Louisiana treating an average of 1.29 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 3,781 residents. It discharges under NPDES permit LA0020559 (effective), which expires in May 2028, with 156 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in July 2011.
Treatment technology
2 treatment structures and unit processes identified at Rayville WWTF.
Available with a free Klarifi account
See the full treatment train at Rayville WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 156
- Effluent violations
- 79
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Rayville WWTF in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Compliance actions
- $5,600
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jul 2011
Rayville, Town of
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $2,100
EPA's description of the case:
“Permittee is a Municipality, under the laws of the State of Louisiana, and operates a wastewater treatment plant, located one mile west of the Town of Rayville in Richland Parish. Permittee failed to…”
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Source: EPA ECHO, civil enforcement case 06-2007-1720.
Full case history with a free Klarifi account
Every action against Rayville WWTF with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Rayville WWTF.
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Nearby wastewater treatment plants in Louisiana
Mangham · 11 mi away
0.06 MGD
Delhi · 18 mi away
1.41 MGD
Monroe · 18 mi away
0.17 MGD
Monroe · 19 mi away
7.62 MGD
Epps · 19 mi away
0.04 MGD
Mer Rouge · 22 mi away
0.0062 MGD
Bastrop · 22 mi away
1.19 MGD
Sterlington · 22 mi away
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Rayville WWTF: 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 October 26, 2026; facility record last updated April 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms