Howard Cantonment Area, AZ
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Howard Cantonment Area
Howard Cantonment Area serves about 1,500 people through 349 service connections, which makes it a small system under EPA's size classes. It is federally owned and draws groundwater, in Yuma County, Arizona. EPA system ID: AZ0414403; phone on file: 928-328-2977. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Howard Cantonment Area's lead record
Against the period ending 2021 (1.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Howard Cantonment Area is 1.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.1 ppb |
| 2021 | 1.2 ppb |
| 2018 | 0.38 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. Howard Cantonment Area's 1.1 ppb sits at the 76th percentile in Arizona and the 57th nationally (higher means more lead).
Other water systems in Yuma County
18 other systems share Yuma County; 2 of them have a higher latest lead result than Howard Cantonment Area. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Yuma | 103,264 | 1.1 ppb |
| San Luis City Of | 39,705 | 1 ppb |
| Foothills Water And Sewer Llc | 32,425 | 0 (not detected) |
| Somerton City Of | 14,197 | 1 ppb |
| Usmc Yuma Main System | 8,353 | 3 ppb |
| Aspc Yuma | 4,197 | 0.93 ppb |
| Wellton Town Of | 3,000 | 0.52 ppb |
| Sierra Pacific Mobile Manor | 816 | 0.54 ppb |
| Tacna Water Improvement District | 500 | 0 (not detected) |
| Shepard Water Company | 430 | 5.3 ppb |
Next steps for Yuma, AZ
Test your own tap with a certified lab first-draw sample; Yuma, 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 Howard Cantonment Area 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.