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EWG's Tap Water Database — 2019 UPDATE

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N-Nitrosopyrrolidine

Sacramento Suburban Water District

N-nitrosopyrrolidine 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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013ND40ND
2014ND90ND
2015ND70ND
2016ND50ND
2017ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-119588-240-1330ND
2012-04-119588-240-1330ND
2012-05-109588-065-1135ND
2012-05-109588-025-1120ND
2012-05-109588-092-1240ND
2012-05-109588-085-1040ND
2012-05-109588-019-1105ND
2012-07-029588-240-1310ND
2012-09-179588-085-1133ND
2012-09-179588-065-1045ND
2012-09-179588-071-0945ND
2012-09-179588-035-1400ND
2012-09-179588-025-1003ND
2012-09-179588-019-1021ND
2012-09-179588-092-1158ND
2012-10-039588-240-0950ND
2013-01-109588-240-1140ND
2013-05-169588-246-1015ND
2013-07-259588-246-1050ND
2013-08-129588-071-1210ND
2014-07-089588-015-1000ND
2014-07-099588-085-1145ND
2014-07-099588-092-1130ND
2014-07-169588-035-1005ND
2014-07-169588-065-0940ND
2014-08-149588-019-1405ND
2014-08-219588-071-0930ND
2014-08-219588-244-0945ND
2014-10-099588-025-1115ND
2015-05-139588-071-1028ND
2015-07-159588-092-1105ND
2015-07-159588-085-1010ND
2015-07-229588-035-1110ND
2015-08-049588-077-0955ND
2015-10-069588-103-1140ND
2015-10-069588-092-1200ND
2016-08-109588-025-1200ND
2016-08-109588-035-1030ND
2016-08-109588-065-1100ND
2016-08-119588-071-1210ND
2016-08-119588-019-1045ND
2017-09-269590-071-1315ND