Rosemount Water Co, NV
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
Rosemount Water Co serves about 54 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Washoe County, Nevada. EPA system ID: NV0000767; phone on file: 775-849-1928. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rosemount Water Co is 1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 1 ppb |
| 2018 | 1 ppb |
How Rosemount Water Co compares
Of the 204 Nevada systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 13 have gone over at some point. Rosemount Water Co's reported as 0 (not detected) sits at the 4th percentile in Nevada and the 4th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Washoe County
21 other systems share Washoe County; 9 of them have a higher latest lead result than Rosemount Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Truckee Meadows Water Authority | 442,000 | 0 (not detected) |
| Sun Valley Gid | 17,000 | 2 ppb |
| Great Basin Water Co Cold Springs | 9,910 | 0 (not detected) |
| Incline Village Gid | 9,313 | 1.4 ppb |
| Great Basin Water Co Spanish Springs | 1,450 | 0 (not detected) |
| Steamboat Springs Waterworks Inc | 998 | 0 (not detected) |
| Verdi Meadows Utility Company Inc | 510 | 0 (not detected) |
| Empire Mining Company | 350 | 0 (not detected) |
| Grandview Terrace Water District | 328 | 1 ppb |
| Gerlach Gid | 180 | 2 ppb |
What to do in your house
Look up your address in Rosemount Water Co'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 Rosemount Water Co 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. Small systems behave differently: why small systems go over more often.