Mores Creek Rim Ranch Water Dist, ID
Exceeded the action level in the past
Latest 90th-percentile lead: 3 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Mores Creek Rim Ranch Water Dist at a glance
Mores Creek Rim Ranch Water Dist serves about 140 people through 68 service connections, which makes it a very small system under EPA's size classes. It is under mixed public and private ownership and draws surface water, in Boise County, Idaho. EPA system ID: ID4080029; phone on file: 208-391-2600. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 2 ppb from 1 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Mores Creek Rim Ranch Water Dist is 72 ppb across 8 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3 ppb |
| 2024 | 1 ppb |
| 2024 | 0 (not detected) |
| 2023 | 6 ppb |
| 2023 | 72 ppb over 15 |
| 2022 | 0 (not detected) |
| 2021 | 5 ppb |
| 2018 | 1 ppb |
Where this result ranks
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. Mores Creek Rim Ranch Water Dist's 3 ppb sits at the 78th percentile in Idaho and the 81st nationally (higher means more lead).
Nearby utilities
19 other systems share Boise County; 5 of them have a higher latest lead result than Mores Creek Rim Ranch Water Dist. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Horseshoe Bend Water Supply | 750 | 2 ppb |
| Idaho City Water Dept | 531 | 2 ppb |
| Wilderness Ranch Owners Association Inc | 525 | 4 ppb |
| Terrace Lakes Water Company | 475 | 4 ppb |
| Mountain View Water And Road Assn | 305 | 2 ppb |
| Castle Mountain Creeks Owners Assn | 250 | 1 ppb |
| Duquette Pines Homeowners Association | 163 | 1 ppb |
| Scriver Woods Homeowners Assn | 160 | 0 (not detected) |
| Rivers Point Property Owners Assn | 140 | 3 ppb |
| Valley Hi Estates | 140 | 8 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Boise, 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 Mores Creek Rim Ranch Water Dist whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1600 ppb (copper action level 1,300 ppb).
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. More in what a past exceedance means today.