Avalon Gardens Water System, AZ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
About Avalon Gardens Water System
Avalon Gardens Water System serves about 100 people through 8 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Santa Cruz County, Arizona. EPA system ID: AZ0412044; phone on file: 928-300-1311. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Avalon Gardens Water System is 6.6 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2023 | 0.56 ppb |
| 2020 | 0.9 ppb |
| 2020 | 0.9 ppb |
| 2017 | 6.6 ppb |
| 2017 | 6.6 ppb |
How Avalon Gardens 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. Avalon Gardens Water System's reported as 0 (not detected) sits at the 12th percentile in Arizona and the 9th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
15 other systems share Santa Cruz County; 4 of them have a higher latest lead result than Avalon Gardens Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Nogales City Of | 22,000 | 0 (not detected) |
| Liberty Water Rio Rico | 17,960 | 0 (not detected) |
| Valle Verde Water Company - East | 2,397 | 0 (not detected) |
| Epcor - Tubac | 2,076 | 0 (not detected) |
| Baca Float Water Company | 1,162 | 0 (not detected) |
| Patagonia Water Department | 819 | 0 (not detected) |
| Town & Country - Preston | 430 | 0 (not detected) |
| Kino Ranch 2 | 173 | 0 (not detected) |
| Sonoita Valley (South) Water Company | 172 | 8 ppb |
| The Grand Acres | 153 | 0 (not detected) |
What to do in your house
Look up your address in Avalon Gardens Water System'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 Avalon Gardens 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.