Hillcrest Water Users Assn, WA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 13.1 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.
About Hillcrest Water Users Assn
Hillcrest Water Users Assn serves about 300 people through 126 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Grant County, Washington. EPA system ID: WA5333200. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 11.9 ppb from 1.2 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Hillcrest Water Users Assn is 13.1 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 13.1 ppb over 10 |
| 2022 | 1.2 ppb |
| 2019 | 1 ppb |
| 2016 | 1.5 ppb |
How Hillcrest Water Users Assn compares
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. Hillcrest Water Users Assn's 13.1 ppb sits at the 99th percentile in Washington and the 98th nationally (higher means more lead).
Other water systems in Grant County
80 other systems share Grant County; 0 of them have a higher latest lead result than Hillcrest Water Users Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Moses Lake City Of | 32,428 | 3.2 ppb |
| Ephrata Water Department | 8,718 | 0 (not detected) |
| Quincy Water Department City Of | 8,415 | 2.5 ppb |
| Mattawa City Of | 5,370 | 0 (not detected) |
| Warden City Of | 4,674 | 0 (not detected) |
| Royal City Water | 3,389 | 3 ppb |
| Desert Aire Owner Assn | 2,856 | 1 ppb |
| Soap Lake Water Dept | 2,399 | 0 (not detected) |
| Electric City City Of | 1,812 | 2.6 ppb |
| Sunland Estates Homeowners Assn | 1,480 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Moses Lake, 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 Hillcrest Water Users Assn 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. Why sampled homes are the worst-case ones is in the guide to reading the number. See what changes at 10 ppb in 2027.