Cyanide in California Drinking Water
7 public water systems in California have historical EPA violation records associated with cyanide in the Q2 2026 snapshot.
7
Historical Records in California
7
Systems With Records
About Cyanide
- EPA Limit
- 200 ppb
- Category
- Inorganic
- Health Effects
- Nerve damage, thyroid problems
- Common Treatment Approaches
- Reverse osmosis, ion exchange
California Systems With the Most Cyanide Records
Santa Ana Eastside
759 served1 historical record
A
Laguna Paguate
757 served1 historical record
A
San Felipe Pueblo
4,335 served1 historical record
A
Pottawatomie Co. Rwd #3 (dale Plant)
5,780 served1 historical record
B
These counts describe historical compliance records, not present concentrations or household test results. Confirm current conditions with the utility's latest Consumer Confidence Report.