Rose Lake Water Assn, ID
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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
Rose Lake Water Assn serves about 300 people through 120 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kootenai County, Idaho. EPA system ID: ID1280161; phone on file: 208-682-4451. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Rose Lake Water Assn's lead record
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rose Lake Water Assn is 5 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 3 ppb |
| 2019 | 5 ppb |
| 2018 | 1 ppb |
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. Rose Lake Water Assn's reported as 0 (not detected) sits at the 26th percentile in Idaho and the 18th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
112 other systems share Kootenai County; 75 of them have a higher latest lead result than Rose Lake Water Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Coeur D Alene City Of | 54,115 | 2 ppb |
| Post Falls City Of | 20,285 | 1 ppb |
| East Greenacres Irrigation Dist | 11,165 | 3 ppb |
| Ross Point Water Dist | 10,473 | 2 ppb |
| Rathdrum City Of | 10,358 | 0 (not detected) |
| Hayden Lake Irrigation Dist | 9,375 | 0 (not detected) |
| Avondale Irrigation Dist | 8,785 | 0 (not detected) |
| Hillside Service Area | 4,140 | 1 ppb |
| Rimrock Service Area | 3,493 | 0 (not detected) |
| Spirit Lake City Of | 2,825 | 1.6 ppb |
What to do in your house
Look up your address in Rose Lake Water 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 Rose Lake 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.