Lake Quinault, WA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 10.5 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Lake Quinault at a glance
Lake Quinault serves about 1,003 people through 110 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Grays Harbor County, Washington. EPA system ID: WA5370350. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is up 7.5 ppb from 3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Lake Quinault is 10.5 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 10.5 ppb over 10 |
| 2022 | 3 ppb |
| 2019 | 3 ppb |
| 2016 | 4.1 ppb |
Against other Washington systems
Of the 2,218 Washington systems with a lead result, the median latest reading is 1 ppb; 18 are over 15 ppb right now and 62 have gone over at some point. Lake Quinault's 10.5 ppb sits at the 98th percentile in Washington and the 97th nationally (higher means more lead).
Neighbouring systems
34 other systems share Grays Harbor County; 0 of them have a higher latest lead result than Lake Quinault. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aberdeen City Of | 22,867 | 0 (not detected) |
| Hoquiam Water Department | 11,456 | 1.2 ppb |
| Ocean Shores Water Dept | 9,347 | 0 (not detected) |
| Elma City Of | 6,638 | 1.4 ppb |
| Montesano City Of | 6,204 | 3.6 ppb |
| Westport Water Department | 5,346 | 2.9 ppb |
| Grays Harbor Co Water Dist 2 | 5,112 | 6.4 ppb |
| Mccleary City Of | 2,753 | 2 ppb |
| Pacific Beach/Moclips | 2,372 | 2.1 ppb |
| Cosmopolis Water Department | 1,812 | 1.2 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Port Orchard, WA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Lake Quinault whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. What a 90th-percentile result does and does not tell you: how to read a lead result. See what changes at 10 ppb in 2027.