Grand Mesa WWTF
4828 Powderhorn Road, Mesa, CO 81643 · Mesa County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- 0.05 MGD
- NPDES permit
- CO0023485
- Administratively continued
- Permit expires
- May 2020
- Population served
- 2,000
- CWNS 2022
Grand Mesa WWTF is a publicly owned wastewater treatment works in Mesa, Mesa County, Colorado treating an average of 0.03 million gallons per day against a permitted design capacity of 0.05 MGD, serving about 2,000 residents. It discharges under NPDES permit CO0023485 (administratively continued), which expires in May 2020, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Grand Mesa WWTF.
Available with a free Klarifi account
See the full treatment train at Grand Mesa WWTF: 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.
Key contacts
Decision-makers at Grand Mesa WWTF.
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Clifton · 16 mi away
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De Beque · 18 mi away
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Delta · 22 mi away
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Grand Junction · 27 mi away
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Hotchkiss · 30 mi away
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Paonia · 32 mi away
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Grand Mesa 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 September 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms