St George City Water System, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 ppb (monitoring period 2022-2024). 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.
St George City Water System at a glance
St George City Water System serves about 105,240 people through 33,106 service connections, which makes it a very large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Washington County, Utah. EPA system ID: UTAH27015; phone on file: 435-627-4850. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 1.4 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for St George City Water System is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.4 ppb |
| 2021 | 0 (not detected) |
| 2018 | 2 ppb |
| 2016 | 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. St George City Water System's 1.4 ppb sits at the 43rd percentile in Utah and the 62nd nationally (higher means more lead).
Neighbouring systems
37 other systems share Washington County; 15 of them have a higher latest lead result than St George City Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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) |
| Virgin | 1,512 | 3.4 ppb |
Your move
Test your own tap with a certified lab first-draw sample; St George City, 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 St George City 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.