Mountain Springs Water Co, UT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About Mountain Springs Water Co
Mountain Springs Water Co serves about 660 people through 259 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Washington County, Utah. EPA system ID: UTAH27077; phone on file: 435-586-2526. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mountain Springs Water Co is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2024 | 0 (not detected) |
Where this result ranks
Of the 521 Utah systems with a lead result, the median latest reading is 1.71 ppb; 8 are over 15 ppb right now and 27 have gone over at some point. Mountain Springs Water Co's reported as 0 (not detected) sits at the 8th percentile in Utah and the 24th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Washington County
37 other systems share Washington County; 30 of them have a higher latest lead result than Mountain Springs Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| St George City Water System | 105,240 | 1.4 ppb |
| Washington City | 45,865 | 2.1 ppb |
| Hurricane City | 25,555 | 0.5 ppb |
| Ivins | 10,465 | 2.3 ppb |
| Santa Clara City | 9,000 | 0.6 ppb |
| Hildale - Colorado City | 6,100 | 1 ppb |
| La Verkin City Water System | 4,500 | 2.21 ppb |
| Zion Canyon Water System | 3,380 | 3.15 ppb |
| Enterprise Town Water System | 2,200 | 1.6 ppb |
| Toquerville Town Water System | 1,931 | 0 (not detected) |
Your move
Look up your address in Mountain Springs 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 Mountain Springs 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. A zero today does not rule out a jump later - the rules are tightening in 2027.