Aspc Lewis Complex Water System, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: 5.1 ppb (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.
About Aspc Lewis Complex Water System
Aspc Lewis Complex Water System serves about 4,300 people through 11 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by the state and draws groundwater, in Maricopa County, Arizona. EPA system ID: AZ0407555; phone on file: 623-386-6160. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 2.8 ppb from 2.3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Aspc Lewis Complex Water System is 83 ppb across 15 monitoring periods, 3 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.1 ppb |
| 2025 | 2.3 ppb |
| 2024 | 3 ppb |
| 2024 | 1.5 ppb |
| 2023 | 2.7 ppb |
| 2023 | 23 ppb over 15 |
| 2022 | 0 (not detected) |
| 2022 | 83 ppb over 15 |
| 2022 | 12 ppb over 10 |
| 2021 | 5.7 ppb |
| 2021 | 1.5 ppb |
| 2020 | 83 ppb over 15 |
| 2019 | 13.96 ppb over 10 |
| 2017 | 13.96 ppb over 10 |
| 2016 | 0 (not detected) |
How Aspc Lewis Complex Water System 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. Aspc Lewis Complex Water System's 5.1 ppb sits at the 90th percentile in Arizona and the 91st nationally (higher means more lead).
Neighbouring systems
99 other systems share Maricopa County; 5 of them have a higher latest lead result than Aspc Lewis Complex Water System. 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) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Buckeye, 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 Aspc Lewis Complex Water System 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. Why an old exceedance still matters: over the limit before, under it now.