Toop Water Assn Inc, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 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.
Toop Water Assn Inc at a glance
Toop Water Assn Inc serves about 80 people through 28 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yakima County, Washington. EPA system ID: WA5388785. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 1.5 ppb from 2.1 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Toop Water Assn Inc is 2.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.6 ppb |
| 2022 | 2.1 ppb |
| 2017 | 0.7 ppb |
How Toop Water Assn Inc 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. Toop Water Assn Inc's 0.6 ppb sits at the 39th percentile in Washington and the 44th nationally (higher means more lead).
Other water systems in Yakima County
88 other systems share Yakima County; 31 of them have a higher latest lead result than Toop Water Assn Inc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Yakima Water Division City Of | 112,858 | 0 (not detected) |
| Nob Hill Water Association | 38,050 | 0 (not detected) |
| Sunnyside City Of | 17,194 | 1.4 ppb |
| Toppenish Water Department | 13,382 | 0 (not detected) |
| Grandview City Of | 11,010 | 1.2 ppb |
| Selah City Of | 9,331 | 0 (not detected) |
| Yak Co - Terrace Heights | 8,410 | 0 (not detected) |
| Union Gap Water | 6,433 | 0 (not detected) |
| Moxee Water Department | 5,599 | 2.2 ppb |
| Wapato Waterworks | 5,255 | 0 (not detected) |
Next steps for Yakima, WA
Test your own tap with a certified lab first-draw sample; Yakima, 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 Toop Water Assn Inc 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. The action level is dropping - the 10 ppb rule from 2027.