N-Nitrosodi-N-butylamine
Status: No national drinking water standard exists
N-Nitrosodi-N-butylamine is one of the DNA-damaging, cancer-causing contaminants called N-nitrosamines that can form during water treatment with the use of certain disinfectants, such as chloramine. Read More.
Pollution of water sources with effluent from municipal wastewater treatment plants and runoff from animal feeding operations contributes to nitrosamine formation. Fifteen different nitrosamines are listed as carcinogens in the U.S. Department of Health and Human Services National Toxicology Program Report on Carcinogens. The federal government has not set a legal limit for nitrosamines in drinking water and water utilities typically do not test for these contaminants. California has set a public health goal for one of the most common nitrosamines, N-nitrosodimethylamine or NDMA, at 0.003 parts per billion in drinking water, a concentration that corresponds to an estimated one-in-one-million cancer risk.
2017-2019:
1
states detected
5
utilities detected
372,000
people served
Health concerns for N-nitrosodi-N-butylamine
Cancer
States reporting N-nitrosodi-N-butylamine in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| California | 5 | 371,830 | |
Filtering technologies that reduce N-nitrosodi-N-butylamine
Reverse Osmosis
Utilities with the highest amounts of N-nitrosodi-N-butylamine, 2017-2019
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Golden State Water Company (GSWC) - Florence/Graham | Rancho Cordova, CA | 1 of 1 | 0.00250 ppb | 65,492 |
| Dublin San Ramon Services District | Dublin, CA | 2 of 14 | 0.000379 ppb | 75,924 |
| Zone 7 Water Agency* | Livermore, CA | 2 of 14 | 0.000379 ppb | 40 |
| City of Livermore | Livermore, CA | 2 of 14 | 0.000379 ppb | 27,000 |
| Santa Clara Valley Water District* | San Jose, CA | 2 of 20 | 0.000344 ppb | 0 |
| City of Riverside* | Riverside, CA | 2 of 23 | 0.000235 ppb | 303,871 |
| Glendale Water Department | Glendale, CA | 3 of 97 | 0 ppb | 195,799 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report N-Nitrosodi-N-butylamine, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Golden State Water Company (GSWC) - Florence/Graham | Rancho Cordova, CA | 1 of 1 | 0.00250 ppb | 65,492 |
| Dublin San Ramon Services District | Dublin, CA | 2 of 14 | 0.000379 ppb | 75,924 |
| City of Livermore | Livermore, CA | 2 of 14 | 0.000379 ppb | 27,000 |
| City of Riverside* | Riverside, CA | 2 of 23 | 0.000235 ppb | 303,871 |
| Glendale Water Department | Glendale, CA | 3 of 97 | 0 ppb | 195,799 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report N-Nitrosodi-N-butylamine, but it likely has the contaminant in its water supply.