Hill Air Force Base, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 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.
Who runs the water here
Hill Air Force Base serves about 25,625 people through 6,636 service connections, which makes it a large system under EPA's size classes. It is federally owned and draws surface water, in Davis County, Utah. EPA system ID: UTAH06024; phone on file: 385-245-3297. They can tell you what your service line is made of and whether they pay to replace it.
Hill Air Force Base's lead record
Against the period ending 2021 (1.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hill Air Force Base is 4.2 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.2 ppb |
| 2021 | 1.8 ppb |
| 2020 | 0.79 ppb |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2018 | 0.45 ppb |
| 2017 | 0.42 ppb |
| 2017 | 1.41 ppb |
| 2016 | 4.2 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. Hill Air Force Base's 1.2 ppb sits at the 37th percentile in Utah and the 59th nationally (higher means more lead).
Nearby utilities
19 other systems share Davis County; 17 of them have a higher latest lead result than Hill Air Force Base. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Layton City Water System | 82,000 | 4.08 ppb |
| 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 |
| 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; Elwood, 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 Hill Air Force Base whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1413.3 ppb (copper action level 1,300 ppb).
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. Size matters more than most people expect: small vs large water systems.