Chlorine disinfection: wastewater treatment plants in Alaska
6 plants · 16% of the state · 7 MGD combined
Klarifi identifies 6 publicly owned wastewater treatment plants with chlorine disinfection in Alaska, 16% of the 38 plants in the state (7 MGD combined). The largest is Charcoal Point WWTP in Ketchikan at 5.09 MGD.
Chlorine or chloramine disinfection, often followed by dechlorination before discharge, remains the most common effluent disinfection in the United States. Plants on gas chlorine are candidates for conversion to hypochlorite or UV, a recurring capital project driven by safety rules and permit limits on residual chlorine.
The largest plants with chlorine disinfection in Alaska
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Charcoal Point WWTP | Ketchikan | 5.09 | AK0021440 | Oct 2030 | 10 |
| 2 | Mountain Point Wastewater Treatment Plant | Ketchikan | 0.55 | AKG572028 | Dec 2027 | 21 |
| 3 | Kenai STP | Kenai | 0.43 | AK0021377 | May 2026 | 1 |
| 4 | Girdwood WWTP | Girdwood | 0.39 | AK0047856 | Oct 2005 | 6 |
| 5 | North Pole WWTP | North Pole | 0.16 | AK0021393 | May 2013 | 4 |
| 6 | Auke Bay Wastewater Treatment Facility | Juneau | 0.08 | AKG572004 | Dec 2027 | 12 |
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 Alaska
Chlorine disinfection in other states
Chlorine disinfection in Alaska: 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.