Desert Sky Dwid, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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.
Desert Sky Dwid at a glance
Desert Sky Dwid serves about 72 people through 33 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in La Paz County, Arizona. EPA system ID: AZ0415122; phone on file: 520-623-5172. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Desert Sky Dwid is 44 ppb across 10 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 44 ppb over 15 |
| 2021 | 0 (not detected) |
| 2021 | 2.6 ppb |
| 2019 | 0.8 ppb |
| 2019 | 0.7 ppb |
How Desert Sky Dwid 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. Desert Sky Dwid's reported as 0 (not detected) sits at the 9th percentile in Arizona and the 6th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
18 other systems share La Paz County; 5 of them have a higher latest lead result than Desert Sky Dwid. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Quartzsite Town Of | 2,761 | 9.9 ppb |
| Epcor - Lakeside | 1,775 | 0 (not detected) |
| Epcor - Moovalya Keys | 1,298 | 6.2 ppb |
| Ehrenberg Improvement District | 989 | 1.5 ppb |
| Epcor - Holiday Harbor | 559 | 0 (not detected) |
| Epcor - Marina Village | 528 | 0 (not detected) |
| 88 Shades Rv Park | 488 | 0 (not detected) |
| Hillcrest Water Company | 459 | 6 ppb |
| Q Mountain Vista Mhp | 440 | 2.9 ppb |
| Epcor - Parker Dam | 429 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Tucson, 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 Desert Sky Dwid 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.