Aromas Water District, CA
Exceeded the action level in the past
Latest 90th-percentile lead: 1.4 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.
Who runs the water here
Aromas Water District serves about 2,988 people through 977 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in San Benito County, California. EPA system ID: CA3510004; phone on file: 831-726-5071. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 1.9 ppb from 3.3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Aromas Water District is 26 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.4 ppb |
| 2024 | 3.3 ppb |
| 2022 | 26 ppb over 15 |
| 2019 | 9.1 ppb |
| 2016 | 12 ppb over 10 |
How Aromas Water District compares
Of the 2,884 California systems with a lead result, the median latest reading is 0 ppb; 30 are over 15 ppb right now and 215 have gone over at some point. Aromas Water District's 1.4 ppb sits at the 74th percentile in California and the 62nd nationally (higher means more lead).
Nearby utilities
30 other systems share San Benito County; 5 of them have a higher latest lead result than Aromas Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hollister, City Of | 26,598 | 1.4 ppb |
| Sunnyslope County Water Dist | 25,486 | 0 (not detected) |
| San Juan Bautista, City Of | 2,335 | 0 (not detected) |
| Mission Oaks Mobile Home Park | 550 | 0 (not detected) |
| Tres Pinos Cwd | 350 | 0 (not detected) |
| Golden State Water Co - San Juan Oaks | 260 | 0 (not detected) |
| Csa No. 31 Stonegate Ws | 230 | 0.7 ppb |
| San Justo Mutual Water Company | 166 | 0 (not detected) |
| Hollister Ranch Estates | 150 | 0 (not detected) |
| Ashford Highlands Mwc | 132 | 0 (not detected) |
Next steps for Aromas, CA
Test your own tap with a certified lab first-draw sample; Aromas, CA 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 Aromas Water District 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Why an old exceedance still matters: over the limit before, under it now.