Callao Wastewater Treatment Plant
Callao, VA · Northumberland County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.06 MGD
- NPDES permit
- VA0091421
- Effective
- Permit expires
- November 2029
- Population served
- —
- CWNS 2022
Callao Wastewater Treatment Plant is a publicly owned wastewater treatment works in Callao, Northumberland County, Virginia treating an average of 0.02 million gallons per day against a permitted design capacity of 0.06 MGD. It discharges under NPDES permit VA0091421 (effective), which expires in November 2029, with 13 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Callao Wastewater Treatment Plant.
No verified contacts on file yet
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Nearby wastewater treatment plants in Virginia
Warsaw · 11 mi away
0.15 MGD
Montross · 17 mi away
0.08 MGD
Tappahannock · 18 mi away
0.42 MGD
Reedville · 18 mi away
0.05 MGD
Tangier · 32 mi away
0.07 MGD
West Point · 36 mi away
0.57 MGD
King William · 37 mi away
0.05 MGD
Dahlgren · 37 mi away
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Callao Wastewater Treatment 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 January 25, 2025.