Biasi Water Company, AZ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Biasi Water Company serves about 284 people through 284 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 Mohave County, Arizona. EPA system ID: AZ0408138; phone on file: 702-524-6505. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (0.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Biasi Water Company is 1.4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0.8 ppb |
| 2019 | 1.4 ppb |
| 2018 | 0.6 ppb |
| 2017 | 1.1 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. Biasi Water Company's reported as 0 (not detected) sits at the 27th percentile in Arizona and the 18th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
49 other systems share Mohave County; 27 of them have a higher latest lead result than Biasi Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lake Havasu City Of | 54,610 | 3.1 ppb |
| Kingman Municipal Water | 45,000 | 0 (not detected) |
| Bullhead City Mohave | 36,330 | 0 (not detected) |
| Bermuda Water Company Inc | 25,000 | 5.6 ppb |
| Valley Pioneers Water Company Inc | 6,263 | 1.5 ppb |
| North Mohave Valley | 5,190 | 22 ppb |
| Epcor - Lake Havasu | 4,712 | 0 (not detected) |
| Golden Shores Water Company | 3,970 | 1.7 ppb |
| Golden Valley Improvement District | 3,950 | 0 (not detected) |
| Epcor - Willow Valley/King Street | 3,566 | 0 (not detected) |
Your move
Look up your address in Biasi Water Company's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Biasi 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.