Barium in California Drinking Water
25 public water systems in California have historical EPA violation records associated with barium in the Q2 2026 snapshot.
27
Historical Records in California
25
Systems With Records
About Barium
- EPA Limit
- 2000 ppb
- Category
- Inorganic
- Health Effects
- Increase in blood pressure
- Common Treatment Approaches
- Ion exchange, reverse osmosis
California Systems With the Most Barium Records
Santa Ana Eastside
759 served1 historical record
A
Laguna Paguate
757 served1 historical record
A
Laguna Valley
4,500 served1 historical record
A
San Felipe Pueblo
4,335 served1 historical record
A
These counts describe historical compliance records, not present concentrations or household test results. Confirm current conditions with the utility's latest Consumer Confidence Report.