N-Nitrosodimethylamine (NDMA)
EWG Health Guideline
3 ppb
National Average
0.644 ppb
Detected In
16 utilities
Health Risks
The EWG Health Guideline of 3 ppt for n-nitrosodimethylamine was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
Filtration Methods
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
no
Utilities That Detected This Contaminant
| Utility Name | State | Level Detected | Status | |
|---|---|---|---|---|
| California Water Service - Livermore | CA | 3.1 ppt | Detected | View |
| City of Livermore | CA | 3.1 ppt | Detected | View |
| City of Pleasanton | CA | 3.1 ppt | Detected | View |
| Dublin San Ramon Services District | CA | 3.1 ppt | Detected | View |
| California Domestic Water Company | CA | 2.18 ppt | Detected | View |
| Long Beach UtilitiesDepartment | CA | 2.1 ppt | Detected | View |
| California Water Service Company - Palos Verde | CA | 2.01 ppt | Detected | View |
| Golden State Water Company (GSWC) - Claremont | CA | 0.5 ppt | Detected | View |
| La Verne WD | CA | 0.5 ppt | Detected | View |
| Three Valleys Municipal Water District | CA | 0.5 ppt | Detected | View |
| California Water Service Company - East Los Angeles | CA | 0.386 ppt | Detected | View |
| Suburban Water Systems - San Jose Hills | CA | 0.164 ppt | Detected | View |
| California Water Service (CWS) - Los Altos Suburban | CA | 0.047 ppt | Detected | View |
| City of Cupertino | CA | 0.047 ppt | Detected | View |
| City of San Jose - EVG/EDV/COY | CA | 0.047 ppt | Detected | View |
| Santa Clara Valley Water District | CA | 0.047 ppt | Detected | View |