Shepard Water Company, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: 5.3 ppb (monitoring period 2025-2025). 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.
Shepard Water Company at a glance
Shepard Water Company serves about 430 people through 163 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yuma County, Arizona. EPA system ID: AZ0414014; phone on file: 928-592-2579. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 1.2 ppb from 6.5 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Shepard Water Company is 25 ppb across 10 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 5.3 ppb |
| 2024 | 6.5 ppb |
| 2023 | 6.4 ppb |
| 2022 | 6.2 ppb |
| 2022 | 7.9 ppb |
| 2021 | 25 ppb over 15 |
| 2021 | 9 ppb |
| 2021 | 11 ppb over 10 |
| 2020 | 9 ppb |
| 2017 | 14.9 ppb over 10 |
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. Shepard Water Company's 5.3 ppb sits at the 91st percentile in Arizona and the 92nd nationally (higher means more lead).
Neighbouring systems
18 other systems share Yuma County; 0 of them have a higher latest lead result than Shepard Water Company. 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 |
| Howard Cantonment Area | 1,500 | 1.1 ppb |
| Sierra Pacific Mobile Manor | 816 | 0.54 ppb |
| Tacna Water Improvement District | 500 | 0 (not detected) |
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 Shepard Water Company 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.