Zion Canyon Water System, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 3.15 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Zion Canyon Water System
Zion Canyon Water System serves about 3,380 people through 47 service connections, which makes it a medium-sized system under EPA's size classes. It is federally owned and draws groundwater, in Washington County, Utah. EPA system ID: UTAH27051; phone on file: 435-772-0207. They can tell you what your service line is made of and whether they pay to replace it.
Zion Canyon Water System's lead record
Against the period ending 2024 (3.15 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Zion Canyon Water System is 8.4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.15 ppb |
| 2024 | 3.15 ppb |
| 2022 | 8.4 ppb |
| 2021 | 8.4 ppb |
| 2018 | 1.91 ppb |
Against other Utah systems
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. Zion Canyon Water System's 3.15 ppb sits at the 76th percentile in Utah and the 84th nationally (higher means more lead).
Nearby utilities
37 other systems share Washington County; 8 of them have a higher latest lead result than Zion Canyon Water System. 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 |
| Enterprise Town Water System | 2,200 | 1.6 ppb |
| Toquerville Town Water System | 1,931 | 0 (not detected) |
| Virgin | 1,512 | 3.4 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Hurricane, UT 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 Zion Canyon Water System 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. Systems that went over once often dip back under; here is what that means.