Henefer Town Water System, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.3 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.
About Henefer Town Water System
Henefer Town Water System serves about 882 people through 323 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Summit County, Utah. EPA system ID: UTAH22005; phone on file: 435-336-5365. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Henefer Town Water System's lead record
That is down 2 ppb from 3.3 ppb in the period ending 2016. The highest 90th-percentile result EPA holds for Henefer Town Water System is 3.3 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.3 ppb |
| 2016 | 3.3 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. Henefer Town Water System's 1.3 ppb sits at the 39th percentile in Utah and the 60th nationally (higher means more lead).
Nearby utilities
26 other systems share Summit County; 18 of them have a higher latest lead result than Henefer Town Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Park City Water System | 8,875 | 1.9 ppb |
| Mountain Regional Water Ssd | 8,245 | 4.5 ppb |
| Summit Water Distribution Company | 6,000 | 3.8 ppb |
| Gorgoza Mutual Water Co | 4,326 | 8.2 ppb |
| Kamas City Water System | 2,200 | 2 ppb |
| Oakley Town Water System | 1,800 | 1 ppb |
| Francis Town Water System | 1,700 | 2.5 ppb |
| Coalville City Water System | 1,590 | 2.1 ppb |
| Pine Meadow Mutual Water | 1,251 | 3.7 ppb |
| Summit County Service Area #3 | 1,140 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Henefer, 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 Henefer Town 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. Size matters more than most people expect: small vs large water systems.