Parkwood, ID
Above the federal action level
Latest 90th-percentile lead: 104.6 ppb (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. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
Parkwood at a glance
Parkwood serves about 65 people through 26 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Island County, Idaho. EPA system ID: WA5323191. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 103.5 ppb from 1.1 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Parkwood is 104.6 ppb across 3 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 104.6 ppb over 15 |
| 2021 | 1.1 ppb |
| 2018 | 2.5 ppb |
How Parkwood compares
Of the 763 Idaho systems with a lead result, the median latest reading is 1 ppb; 3 are over 15 ppb right now and 46 have gone over at some point. Parkwood's 104.6 ppb sits at the 100th percentile in Idaho and the 100th nationally (higher means more lead).
Your move
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Parkwood 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. The action level is dropping - the 10 ppb rule from 2027.