Country Club Subdivisions Water Assn, ID
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 14 ppb (monitoring period 2024-2026). 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.
Who runs the water here
Country Club Subdivisions Water Assn serves about 120 people through 27 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Canyon County, Idaho. EPA system ID: ID3140022; phone on file: 208-283-4499. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 14 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Country Club Subdivisions Water Assn is 14 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 14 ppb over 10 |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Idaho systems
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. Country Club Subdivisions Water Assn's 14 ppb sits at the 99th percentile in Idaho and the 99th nationally (higher means more lead).
Other water systems in Canyon County
82 other systems share Canyon County; 0 of them have a higher latest lead result than Country Club Subdivisions Water Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Nampa City Of | 100,200 | 1 ppb |
| Caldwell City Of | 78,740 | 0 (not detected) |
| Middleton City Of | 13,190 | 2 ppb |
| Parma City Of | 2,250 | 1 ppb |
| Wilder City Of | 1,690 | 5 ppb |
| Caldwell Housing Authority | 1,100 | 9 ppb |
| Greenleaf City Of | 846 | 2 ppb |
| Melba City Of | 648 | 3 ppb |
| Notus City Of | 539 | 2 ppb |
| Shalimar Subd | 370 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Caldwell, ID 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 Country Club Subdivisions Water 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. See what changes at 10 ppb in 2027.