North Bay Estates, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: 5.5 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.
Who runs the water here
North Bay Estates serves about 156 people through 67 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Gila County, Arizona. EPA system ID: AZ0404049; phone on file: 928-478-6516. They can tell you what your service line is made of and whether they pay to replace it.
North Bay Estates's lead record
That is down 10.5 ppb from 16 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for North Bay Estates is 16 ppb across 8 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.5 ppb |
| 2025 | 16 ppb over 15 |
| 2024 | 0 (not detected) |
| 2023 | 7.4 ppb |
| 2021 | 14 ppb over 10 |
| 2020 | 14 ppb over 10 |
| 2018 | 3.1 ppb |
| 2017 | 3.1 ppb |
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. North Bay Estates's 5.5 ppb sits at the 91st percentile in Arizona and the 92nd nationally (higher means more lead).
Nearby utilities
37 other systems share Gila County; 7 of them have a higher latest lead result than North Bay Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Payson Town Of | 17,682 | 3.5 ppb |
| Arizona Water Co - Miami Claypool | 8,616 | 0 (not detected) |
| Pine Strawberry Wid | 8,013 | 13 ppb |
| Globe City Of | 7,536 | 0.68 ppb |
| Tonto Basin Water - Lr Gardens West | 1,172 | 8.5 ppb |
| Town Of Star Valley Water Department | 1,157 | 0 (not detected) |
| Payson Water - Mesa De Caballo | 976 | 0 (not detected) |
| Hayden Town Of | 517 | 0 (not detected) |
| Tonto Basin Water Roosevelt Lake Estates | 508 | 7.5 ppb |
| Gisela | 508 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Payson, 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 North Bay Estates 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. More in what a past exceedance means today.