Cleanest Lakes in Mason County, Washington
Nla Lake in Mason County leads the rankings with a water quality grade of A. Below are the top 2 cleanest monitored lakes in Mason County, Washington, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Nla Lake | Mason | A | - | 14.1 µg/L | 8 µg/L |
| 2 | Nla Lake | Mason | C | - | 12509.4 µg/L | 1.7 µg/L |