Usmc Yuma Main System, AZ
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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.
Usmc Yuma Main System at a glance
Usmc Yuma Main System serves about 8,353 people through 1,000 service connections, which makes it a medium-sized system under EPA's size classes. It is federally owned and draws surface water, in Yuma County, Arizona. EPA system ID: AZ0414082; phone on file: 928-269-2809. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Usmc Yuma Main System's lead record
Against the period ending 2021 (2.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Usmc Yuma Main System is 4.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 3 ppb |
| 2021 | 2.4 ppb |
| 2018 | 4.1 ppb |
How Usmc Yuma Main 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. Usmc Yuma Main System's 3 ppb sits at the 85th percentile in Arizona and the 83rd nationally (higher means more lead).
Nearby utilities
18 other systems share Yuma County; 1 of them has a higher latest lead result than Usmc Yuma Main System. 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 |
| Aspc Yuma | 4,197 | 0.93 ppb |
| Wellton Town Of | 3,000 | 0.52 ppb |
| Howard Cantonment Area | 1,500 | 1.1 ppb |
| Sierra Pacific Mobile Manor | 816 | 0.54 ppb |
| Tacna Water Improvement District | 500 | 0 (not detected) |
| Shepard Water Company | 430 | 5.3 ppb |
What to do in your house
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 Usmc Yuma Main 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. The action level is dropping - the 10 ppb rule from 2027.