Arcosanti Camp, AZ
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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.
Arcosanti Camp at a glance
Arcosanti Camp serves about 115 people through 28 service connections, which makes it a very small system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Yavapai County, Arizona. EPA system ID: AZ0413341; phone on file: 602-359-2008. They can tell you what your service line is made of and whether they pay to replace it.
Arcosanti Camp's lead record
That is up 2.4 ppb from 0.6 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Arcosanti Camp is 8 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2025 | 0.6 ppb |
| 2024 | 0.8 ppb |
| 2023 | 4.8 ppb |
| 2020 | 6 ppb |
| 2019 | 8 ppb |
| 2018 | 4.4 ppb |
| 2017 | 6.1 ppb |
| 2016 | 3.2 ppb |
How Arcosanti Camp compares
Of the 730 Arizona systems with a lead result, the median latest reading is 0 ppb; 9 are over 15 ppb right now and 58 have gone over at some point. Arcosanti Camp's 3 ppb sits at the 85th percentile in Arizona and the 81st nationally (higher means more lead).
Other water systems in Yavapai County
100 other systems share Yavapai County; 15 of them have a higher latest lead result than Arcosanti Camp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Town Of Prescott Valley | 57,048 | 0 (not detected) |
| Prescott City Of | 42,217 | 0 (not detected) |
| Cottonwood Municipal Water Cw1 | 11,288 | 0 (not detected) |
| Big Park Water Company | 7,392 | 0 (not detected) |
| Town Of Camp Verde Utilities | 5,380 | 0 (not detected) |
| Clarkdale Municipal Water System | 5,201 | 0 (not detected) |
| Cottonwood Municipal Water Vv6 | 4,518 | 18 ppb |
| Cordes Lakes Water Company | 4,425 | 4.1 ppb |
| Arizona Water Co - Rimrock | 3,532 | 0 (not detected) |
| Freeport Mcmoran Bagdad Town | 3,200 | 0 (not detected) |
Next steps for Mayer, AZ
Test your own tap with a certified lab first-draw sample; Mayer, AZ 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 Arcosanti Camp 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. The action level is dropping - the 10 ppb rule from 2027.