HRSD - Onancock WWTP
23656 North St, Onancock, VA 23417 · Accomack County · Publicly Owned Treatment Works
- Average flow
- 0.26 MGD
- Design flow
- 0.75 MGD
- NPDES permit
- VA0021253
- Effective
- Permit expires
- August 2031
- Population served
- 1,700
- CWNS 2022
HRSD - Onancock WWTP is a publicly owned wastewater treatment works in Onancock, Accomack County, Virginia treating an average of 0.26 million gallons per day against a permitted design capacity of 0.75 MGD, serving about 1,700 residents. It discharges under NPDES permit VA0021253 (effective), which expires in August 2031, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at HRSD - Onancock WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for HRSD - Onancock WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at HRSD - Onancock WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Virginia
Tangier · 16 mi away
0.04 MGD
Reedville · 30 mi away
0.05 MGD
Callao · 48 mi away
0.03 MGD
Warsaw · 56 mi away
0.16 MGD
West Point · 62 mi away
0.53 MGD
Tappahannock · 63 mi away
0.34 MGD
Montross · 64 mi away
0.06 MGD
Charles City · 69 mi away
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HRSD - Onancock WWTP: 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 September 3, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms