Ntm Aviation, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: 0.48 ppb (monitoring period 2024-2024). 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.
Ntm Aviation at a glance
Ntm Aviation serves about 47 people through 39 service connections, which makes it a very small system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Cochise County, Arizona. EPA system ID: AZ0402401; phone on file: 520-642-9280. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2023 (0.53 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ntm Aviation is 33 ppb across 10 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.48 ppb |
| 2023 | 0.53 ppb |
| 2022 | 0.84 ppb |
| 2022 | 33 ppb over 15 |
| 2021 | 0.66 ppb |
| 2021 | 0.66 ppb |
| 2020 | 33 ppb over 15 |
| 2019 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 5.9 ppb |
Where this result ranks
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. Ntm Aviation's 0.48 ppb sits at the 69th percentile in Arizona and the 42nd nationally (higher means more lead).
Nearby utilities
49 other systems share Cochise County; 17 of them have a higher latest lead result than Ntm Aviation. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bella Vista City Water System | 20,045 | 0 (not detected) |
| Douglas City Of | 16,656 | 0 (not detected) |
| Us Army Fort Huachuca | 15,603 | 0 (not detected) |
| Pueblo Del Sol Water Company | 12,804 | 0 (not detected) |
| Arizona Water Co - Sierra Vista | 9,233 | 0 (not detected) |
| Arizona Water Co - Bisbee | 8,590 | 0 (not detected) |
| Benson, City Of Water System | 5,355 | 0 (not detected) |
| City Of Willcox | 3,236 | 0 (not detected) |
| St David Dwid | 2,192 | 0 (not detected) |
| Bella Vista Water South | 2,178 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Mcneal, 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 Ntm Aviation 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. Why an old exceedance still matters: over the limit before, under it now.