Epcor - Sun City West, AZ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Epcor - Sun City West at a glance
Epcor - Sun City West serves about 25,796 people through 15,634 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in Maricopa County, Arizona. EPA system ID: AZ0407150; phone on file: 623-445-2431. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Epcor - Sun City West's lead record
Against the period ending 2020 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Epcor - Sun City West is 0 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Arizona systems
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. Epcor - Sun City West's reported as 0 (not detected) sits at the 65th percentile in Arizona and the 39th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Maricopa County
99 other systems share Maricopa County; 24 of them have a higher latest lead result than Epcor - Sun City West. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Phoenix City Of | 1,695,000 | 2.74 ppb |
| Mesa City Of | 466,000 | 5.01 ppb |
| Gilbert, Town Of | 247,600 | 0 (not detected) |
| Chandler City Of | 247,328 | 1.4 ppb |
| Scottsdale City Of | 241,361 | 2.3 ppb |
| Glendale City Of | 234,766 | 2.11 ppb |
| Peoria City Of | 187,676 | 0 (not detected) |
| Tempe City Of | 165,000 | 4.4 ppb |
| Epcor - Agua Fria | 128,040 | 0 (not detected) |
| Avondale City Of | 96,130 | 0 (not detected) |
Your move
Look up your address in Epcor - Sun City West's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Epcor - Sun City West 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. Small systems behave differently: why small systems go over more often.