Katherine Heights, UT
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
About Katherine Heights
Katherine Heights serves about 415 people through 166 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Mohave County, Utah. EPA system ID: AZ0408174; phone on file: 435-627-1785. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 10 ppb from 10 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Katherine Heights is 16 ppb across 12 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 10 ppb |
| 2023 | 1.2 ppb |
| 2022 | 0.55 ppb |
| 2022 | 0.7 ppb |
| 2020 | 0.89 ppb |
| 2019 | 1.7 ppb |
| 2018 | 5.1 ppb |
| 2018 | 5.1 ppb |
| 2017 | 0.95 ppb |
| 2017 | 0 (not detected) |
| 2016 | 16 ppb over 15 |
How Katherine Heights 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. Katherine Heights's reported as 0 (not detected) sits at the 7th percentile in Utah and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
1 other system shares Mohave County; 1 of them has a higher latest lead result than Katherine Heights. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Chief Sleep Easy Tp | 124 | 4 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Washington, 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 Katherine Heights 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. More in what a past exceedance means today.