Hyrum City, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 3.4 ppb (monitoring period 2023-2025). 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
Hyrum City serves about 10,891 people through 3,380 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 groundwater, in Cache County, Utah. EPA system ID: UTAH03008; phone on file: 435-245-6033. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2023 (3.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hyrum City is 3.4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.4 ppb |
| 2023 | 3.4 ppb |
| 2022 | 2 ppb |
| 2020 | 2 ppb |
| 2017 | 1.4 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. Hyrum City's 3.4 ppb sits at the 78th percentile in Utah and the 85th nationally (higher means more lead).
Other water systems in Cache County
21 other systems share Cache County; 7 of them have a higher latest lead result than Hyrum City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Logan City Water System | 55,540 | 2.2 ppb |
| Smithfield City | 10,223 | 4 ppb |
| Providence City Water System | 9,690 | 1.5 ppb |
| Nibley City Water | 9,200 | 1.6 ppb |
| North Logan City | 8,500 | 2.7 ppb |
| Wellsville City Water System | 4,190 | 2.8 ppb |
| River Heights City | 2,195 | 11.7 ppb |
| Lewiston City | 2,078 | 1.3 ppb |
| Millville City | 1,900 | 4 ppb |
| Mendon City | 1,640 | 2 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Wellsville, 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 Hyrum 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.