Richland City Wastewater Lab
555 Lacy Rd, Richland, WA 99352 · Benton County · Publicly Owned Treatment Works
- Average flow
- 5.91 MGD
- Design flow
- 22.8 MGD
- NPDES permit
- WA0020419
- Administratively continued
- Permit expires
- September 2021
- Population served
- 56,193
- CWNS 2022
Richland City Wastewater Lab is a publicly owned wastewater treatment works in Richland, Benton County, Washington treating an average of 5.91 million gallons per day against a permitted design capacity of 22.8 MGD, serving about 56,193 residents. It discharges under NPDES permit WA0020419 (administratively continued), which expires in September 2021, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in May 2014.
Treatment technology
2 treatment structures and unit processes identified at Richland City Wastewater Lab.
Available with a free Klarifi account
See the full treatment train at Richland City Wastewater Lab: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
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 Richland City Wastewater Lab in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $6,180
- all cases
- Compliance actions
- $6,787
- required by EPA orders
- EPA inspections
- 3
- latest Aug 2013
Latest case · May 2014
CITY OF RICHLAND WASTEWATER TREATMENT FACILITY
Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $6,180 · Compliance actions $6,787
EPA's description of the case:
“On May 1, 2014, Region 10 filed an expedited settlement agreement which both initiated and concluded an administrative action against the City of Richland Wastewater Treatment facility for violations…”
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Source: EPA ECHO, civil enforcement case 10-2014-0074.
Full case history with a free Klarifi account
Every action against Richland City Wastewater Lab with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Richland
Richland's capital improvement plan lists 19 water, sewer and wastewater line items worth $83M starting 2025–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Richland →
| Project | Budget | Years |
|---|---|---|
| Downtown Connectivity Transportation Improvements | $23,550,000 | 2025–2026 |
| Wastewater Treatment Plant Anaerobic Digester Improvements | $11,370,000 | 2025–2027 |
| Wastewater Collection System Rehabilitation and Replacement Program | $8,120,000 | 2025–2028 |
| Horn Rapids Irrigation Water System Upgrades | $6,325,000 | 2025–2026 |
| Water Distribution System Repairs and Replacements | $6,200,000 | 2025–2028 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
1 verified contact for Richland City Wastewater Lab, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Richland City Wastewater Lab, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Pasco · 9 mi away
—
Benton City · 10 mi away
0.23 MGD
Prosser · 23 mi away
0.74 MGD
Grandview · 31 mi away
0.93 MGD
Mabton · 34 mi away
0.15 MGD
Sunnyside · 36 mi away
1.64 MGD
Sunnyside · 36 mi away
1.34 MGD
Othello · 39 mi away
0.89 MGD
Richland City Wastewater Lab: 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 13, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms