Hildale - Colorado City, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2021-2023). 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.
Hildale - Colorado City at a glance
Hildale - Colorado City serves about 6,100 people through 1,214 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Washington County, Utah. EPA system ID: UTAH27006; phone on file: 602-614-6912. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Hildale - Colorado City's lead record
That is down 2.7 ppb from 3.7 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Hildale - Colorado City is 4.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1 ppb |
| 2020 | 3.7 ppb |
| 2017 | 4.2 ppb |
How Hildale - Colorado City compares
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. Hildale - Colorado City's 1 ppb sits at the 31st percentile in Utah and the 55th nationally (higher means more lead).
Other water systems in Washington County
37 other systems share Washington County; 22 of them have a higher latest lead result than Hildale - Colorado City. 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 |
| 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) |
| Virgin | 1,512 | 3.4 ppb |
Next steps for Hildale, UT
Test your own tap with a certified lab first-draw sample; Hildale, 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 Hildale - Colorado City 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.