Layton City Water System, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 4.08 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.
Layton City Water System at a glance
Layton City Water System serves about 82,000 people through 20,976 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Davis County, Utah. EPA system ID: UTAH06018; phone on file: 801-336-3720. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (4.08 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Layton City Water System is 4.33 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4.08 ppb |
| 2023 | 4.08 ppb |
| 2020 | 1.1 ppb |
| 2020 | 1.1 ppb |
| 2017 | 1.68 ppb |
| 2016 | 4.33 ppb |
How Layton City Water System 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. Layton City Water System's 4.08 ppb sits at the 83rd percentile in Utah and the 88th nationally (higher means more lead).
Nearby utilities
19 other systems share Davis County; 7 of them have a higher latest lead result than Layton City Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bountiful City Water System | 37,500 | 7.2 ppb |
| Syracuse City Water System | 35,561 | 2.6 ppb |
| Clearfield City Water System | 33,540 | 2.8 ppb |
| Kaysville City Water System | 32,976 | 2.4 ppb |
| Farmington City Water System | 27,860 | 3 ppb |
| Hill Air Force Base | 25,625 | 1.2 ppb |
| Clinton City Water System | 23,000 | 2.2 ppb |
| North Salt Lake City Water System | 18,655 | 16 ppb |
| Centerville City Water System | 17,155 | 3 ppb |
| Woods Cross City Water System | 13,110 | 13.5 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Layton, 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 Layton 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. 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.