Arlington County Water Pollution Control Plant
Arlington, VA · Arlington County · Publicly Owned Treatment Works
- Average flow
- 20.7 MGD
- Design flow
- 40 MGD
- NPDES permit
- VA0025143
- Administratively continued
- Permit expires
- November 2024
- Population served
- 268,149
- CWNS 2022
Arlington County Water Pollution Control Plant is a publicly owned wastewater treatment works in Arlington, Arlington County, Virginia treating an average of 20.7 million gallons per day against a permitted design capacity of 40 MGD, serving about 268,149 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit VA0025143 (administratively continued), which expires in November 2024, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Arlington
Arlington's capital improvement plan lists 35 water, sewer and wastewater line items worth $883M starting 2025–2034. The largest budgeted items are shown here.
All water and sewer capital projects in Arlington →
| Project | Budget | Years |
|---|---|---|
| Re-Gen Phase III | $210,485,000 | 2025–2029 |
| Washington Aqueduct Capital | $145,760,000 | 2025–2034 |
| Finished Water Reliability & Interconnections | $94,860,000 | 2025–2031 |
| Water – Main Replacement Program | $78,820,000 | 2025–2034 |
| Regional Source Water Resiliency | $60,500,000 | 2034–2034 |
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
3 verified contacts for Arlington County Water Pollution Control Plant, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Arlington County Water Pollution Control Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Virginia
Lorton · 13 mi away
34.8 MGD
Lorton · 14 mi away
0.003 MGD
Woodbridge · 20 mi away
14.17 MGD
Aldie · 33 mi away
0.002 MGD
Warrenton · 35 mi away
0.29 MGD
Dahlgren · 35 mi away
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King George · 37 mi away
0.04 MGD
Leesburg · 37 mi away
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Arlington County Water Pollution Control Plant: 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 May 29, 2025.