UV disinfection: wastewater treatment plants in Arizona
7 plants · 13% of the state · 4 MGD reported by 3 plants
Klarifi identifies 7 publicly owned wastewater treatment plants with uv disinfection in Arizona, 13% of the 53 plants in the state (4 MGD reported by 3 plants). The largest is Town Of Prescott Valley - WWTP in Prescott Valley at 2.74 MGD.
Ultraviolet disinfection destroys pathogens in the final effluent without chemicals or a chlorine residual. It has replaced chlorine at many plants since the 2000s and needs lamp, ballast and sleeve replacement on a fixed cycle, which keeps these plants in the market for UV suppliers.
The largest plants with UV disinfection in Arizona
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Town Of Prescott Valley - WWTP | Prescott Valley | 2.74 | AZ0025381 | Feb 2027 | 0 |
| 2 | American Gulch Wastewater Treatment Plant | Payson | 0.69 | AZ0020117 | Apr 2027 | 0 |
| 3 | City Of Kingman - Downtown Pond | Kingman | 0.23 | AZ0026018 | Dec 2026 | 7 |
| 4 | Pima County - Wwmd - Avra Valley WWTF | Tucson | — | AZ0024121 | May 2029 | 0 |
| 5 | Rio De Flag WWTP | Flagstaff | — | AZ0023639 | Apr 2030 | 2 |
| 6 | Town Of Florence WWTP | Florence | — | AZ0025208 | Apr 2031 | 23 |
| 7 | Town Of Marana Water Reclamation Facility | Marana | — | AZ0024520 | Aug 2027 | 0 |
Contacts and project signals for every plant on this list
Klarifi adds verified decision-maker contacts, permit limits, discharge monitoring data and the capital projects planned in each city, filterable by technology, size and compliance record.
Other technologies in Arizona
UV disinfection in other states
UV disinfection in Arizona: 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.