Smithfield City, UT
Exceeded the action level in the past
Latest 90th-percentile lead: 4 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Smithfield City serves about 10,223 people through 4,347 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: UTAH03020; phone on file: 435-563-6226. They can tell you what your service line is made of and whether they pay to replace it.
Smithfield City's lead record
That is down 42 ppb from 46 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Smithfield City is 46 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 4 ppb |
| 2025 | 46 ppb over 15 |
| 2022 | 2.2 ppb |
| 2019 | 2.6 ppb |
| 2016 | 3.05 ppb |
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. Smithfield City's 4 ppb sits at the 83rd percentile in Utah and the 88th nationally (higher means more lead).
Other water systems in Cache County
21 other systems share Cache County; 4 of them have a higher latest lead result than Smithfield 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 |
| Hyrum City | 10,891 | 3.4 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 |
Next steps for Smithfield, UT
Test your own tap with a certified lab first-draw sample; Smithfield, 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 Smithfield 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Why an old exceedance still matters: over the limit before, under it now.