Roosevelt Lake Ranch, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Roosevelt Lake Ranch at a glance
Roosevelt Lake Ranch serves about 487 people through 263 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lincoln County, Washington. EPA system ID: WA5347283. Ask the utility on your bill for your address in their service line inventory.
Roosevelt Lake Ranch's lead record
That is down 1.3 ppb from 2.9 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Roosevelt Lake Ranch is 2.9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.6 ppb |
| 2022 | 2.9 ppb |
| 2019 | 1.8 ppb |
| 2016 | 1 ppb |
Where this result ranks
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. Roosevelt Lake Ranch's 1.6 ppb sits at the 62nd percentile in Washington and the 65th nationally (higher means more lead).
Other water systems in Lincoln County
14 other systems share Lincoln County; 2 of them have a higher latest lead result than Roosevelt Lake Ranch. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Davenport Water Division | 1,750 | 0 (not detected) |
| Reardan Town Of | 1,418 | 0 (not detected) |
| Wilbur Town Of | 1,040 | 1.2 ppb |
| Odessa | 986 | 0 (not detected) |
| Harrington City Of | 650 | 1.4 ppb |
| Sprague City Of | 570 | 0 (not detected) |
| Seven Bays Estates Unlimited | 431 | 0 (not detected) |
| Almira Water System | 372 | 4.8 ppb |
| Creston Public Water | 348 | 1.4 ppb |
| Deer Meadows Water Company Inc | 268 | 0 (not detected) |
Next steps for Wilbur, WA
Test your own tap with a certified lab first-draw sample; Wilbur, 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 Roosevelt Lake Ranch 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.