Arches National Park Hq, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.71 ppb (monitoring period 2024-2026). 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.
Arches National Park Hq at a glance
Arches National Park Hq serves about 116 people through 10 service connections, which makes it a very small system under EPA's size classes. It is federally owned and draws groundwater, in Grand County, Utah. EPA system ID: UTAH10021; phone on file: 435-259-4712. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Arches National Park Hq's lead record
Against the period ending 2024 (1.71 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Arches National Park Hq is 1.71 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.71 ppb |
| 2024 | 1.71 ppb |
How Arches National Park Hq 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. Arches National Park Hq's 1.71 ppb sits at the 50th percentile in Utah and the 67th nationally (higher means more lead).
Nearby utilities
5 other systems share Grand County; 1 of them has a higher latest lead result than Arches National Park Hq. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Moab City | 9,000 | 3.1 ppb |
| Grand Water And Sewer Agency | 4,099 | 0.6 ppb |
| Sorrel River Ranch Water | 260 | 0 (not detected) |
| Thompson Special Services District | 85 | 0 (not detected) |
| Day Star Adventist Academy | 35 | 1.1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Moab, 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 Arches National Park Hq 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. Systems that went over once often dip back under; here is what that means.