Reservoir Hill Maintenance Assn, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Reservoir Hill Maintenance Assn serves about 34 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kittitas County, Washington. EPA system ID: WA5308401. Ask the utility on your bill for your address in their service line inventory.
Reservoir Hill Maintenance Assn's lead record
That is down 1.4 ppb from 1.4 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Reservoir Hill Maintenance Assn is 1.4 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2018 | 1.4 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. Reservoir Hill Maintenance Assn's reported as 0 (not detected) sits at the 2nd percentile in Washington and the 1st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
36 other systems share Kittitas County; 10 of them have a higher latest lead result than Reservoir Hill Maintenance Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ellensburg Water Dept | 20,900 | 1.5 ppb |
| Suncadia Resort | 2,640 | 13 ppb |
| Kittitas City Of | 2,247 | 1 ppb |
| Cle Elum Water Department | 2,213 | 0 (not detected) |
| Roslyn City Of | 2,099 | 0 (not detected) |
| Kittitas County Water District #5 | 700 | 0 (not detected) |
| South Cle Elum Water Dept | 541 | 0 (not detected) |
| Kittitas County Water District #4 | 510 | 0 (not detected) |
| Kittitas County Water District #7 | 463 | 0 (not detected) |
| Vantage Water System | 405 | 0 (not detected) |
Your move
Look up your address in Reservoir Hill Maintenance Assn's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Reservoir Hill Maintenance 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.