Nitrite
City of San Diego
Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.
235
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 33 | 0 | ND |
2015 | ND | 37 | 0 | ND |
2016 | ND | 36 | 0 | ND |
2017 | ND | 36 | 0 | ND |
2018 | ND | 46 | 0 | ND |
2019 | ND | 47 | 0 | ND |
ppm = parts per million
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 1 ppm
The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.
ppm = parts per million
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-07 | 9437-001-0000 | ND |
2014-01-07 | 9437-006-0000 | ND |
2014-01-07 | 9437-010-0000 | ND |
2014-03-04 | 9437-001-0000 | ND |
2014-03-04 | 9437-006-0000 | ND |
2014-03-04 | 9437-010-0000 | ND |
2014-04-08 | 9437-001-0000 | ND |
2014-04-08 | 9437-006-0000 | ND |
2014-04-08 | 9437-010-0000 | ND |
2014-05-20 | 9437-001-0000 | ND |
2014-05-20 | 9437-006-0000 | ND |
2014-05-20 | 9437-010-0000 | ND |
2014-06-03 | 9437-001-0000 | ND |
2014-06-03 | 9437-006-0000 | ND |
2014-06-03 | 9437-010-0000 | ND |
2014-07-08 | 9437-001-0000 | ND |
2014-07-08 | 9437-006-0000 | ND |
2014-07-08 | 9437-010-0000 | ND |
2014-08-05 | 9437-001-0000 | ND |
2014-08-05 | 9437-006-0000 | ND |
2014-08-05 | 9437-010-0000 | ND |
2014-09-02 | 9437-001-0000 | ND |
2014-09-02 | 9437-006-0000 | ND |
2014-09-02 | 9437-010-0000 | ND |
2014-10-07 | 9437-001-0000 | ND |
2014-10-07 | 9437-006-0000 | ND |
2014-10-07 | 9437-010-0000 | ND |
2014-11-04 | 9437-001-0000 | ND |
2014-11-04 | 9437-006-0000 | ND |
2014-11-04 | 9437-010-0000 | ND |
2014-12-02 | 9437-001-0000 | ND |
2014-12-02 | 9437-010-0000 | ND |
2014-12-09 | 9437-006-0000 | ND |
2015-01-06 | 9437-001-0000 | ND |
2015-01-06 | 9437-006-0000 | ND |
2015-01-06 | 9437-010-0000 | ND |
2015-02-03 | 9437-001-0000 | ND |
2015-02-03 | 9437-006-0000 | ND |
2015-02-03 | 9437-010-0000 | ND |
2015-03-03 | 9437-001-0000 | ND |
2015-03-03 | 9437-006-0000 | ND |
2015-03-03 | 9437-010-0000 | ND |
2015-03-17 | 9437-006-0000 | ND |
2015-04-07 | 9437-001-0000 | ND |
2015-04-07 | 9437-006-0000 | ND |
2015-04-07 | 9437-010-0000 | ND |
2015-05-05 | 9437-001-0000 | ND |
2015-05-05 | 9437-006-0000 | ND |
2015-05-05 | 9437-010-0000 | ND |
2015-06-02 | 9437-001-0000 | ND |
2015-06-02 | 9437-006-0000 | ND |
2015-06-02 | 9437-010-0000 | ND |
2015-07-07 | 9437-001-0000 | ND |
2015-07-07 | 9437-006-0000 | ND |
2015-07-07 | 9437-010-0000 | ND |
2015-08-04 | 9437-001-0000 | ND |
2015-08-04 | 9437-006-0000 | ND |
2015-08-04 | 9437-010-0000 | ND |
2015-09-08 | 9437-001-0000 | ND |
2015-09-08 | 9437-006-0000 | ND |
2015-09-08 | 9437-010-0000 | ND |
2015-10-06 | 9437-001-0000 | ND |
2015-10-06 | 9437-006-0000 | ND |
2015-10-06 | 9437-010-0000 | ND |
2015-11-03 | 9437-001-0000 | ND |
2015-11-03 | 9437-006-0000 | ND |
2015-11-03 | 9437-010-0000 | ND |
2015-12-08 | 9437-001-0000 | ND |
2015-12-08 | 9437-006-0000 | ND |
2015-12-08 | 9437-010-0000 | ND |
2016-01-05 | 9437-001-0000 | ND |
2016-01-05 | 9437-006-0000 | ND |
2016-01-05 | 9437-010-0000 | ND |
2016-02-02 | 9437-001-0000 | ND |
2016-02-02 | 9437-006-0000 | ND |
2016-02-02 | 9437-010-0000 | ND |
2016-03-08 | 9437-001-0000 | ND |
2016-03-08 | 9437-006-0000 | ND |
2016-03-22 | 9437-010-0000 | ND |
2016-04-05 | 9437-001-0000 | ND |
2016-04-05 | 9437-006-0000 | ND |
2016-04-05 | 9437-010-0000 | ND |
2016-05-03 | 9437-001-0000 | ND |
2016-05-03 | 9437-006-0000 | ND |
2016-05-10 | 9437-010-0000 | ND |
2016-06-07 | 9437-001-0000 | ND |
2016-06-07 | 9437-006-0000 | ND |
2016-06-07 | 9437-010-0000 | ND |
2016-07-05 | 9437-001-0000 | ND |
2016-07-05 | 9437-006-0000 | ND |
2016-07-05 | 9437-010-0000 | ND |
2016-08-02 | 9437-001-0000 | ND |
2016-08-02 | 9437-006-0000 | ND |
2016-08-02 | 9437-010-0000 | ND |
2016-09-13 | 9437-001-0000 | ND |
2016-09-13 | 9437-006-0000 | ND |
2016-09-13 | 9437-010-0000 | ND |
2016-10-04 | 9437-001-0000 | ND |
2016-10-04 | 9437-006-0000 | ND |
2016-10-11 | 9437-010-0000 | ND |
2016-11-08 | 9437-001-0000 | ND |
2016-11-08 | 9437-006-0000 | ND |
2016-11-08 | 9437-010-0000 | ND |
2016-12-06 | 9437-001-0000 | ND |
2016-12-06 | 9437-006-0000 | ND |
2016-12-06 | 9437-010-0000 | ND |
2017-01-03 | 9437-001-0000 | ND |
2017-01-03 | 9437-006-0000 | ND |
2017-01-10 | 9437-010-0000 | ND |
2017-02-07 | 9437-001-0000 | ND |
2017-02-07 | 9437-006-0000 | ND |
2017-02-07 | 9437-010-0000 | ND |
2017-03-07 | 9437-001-0000 | ND |
2017-03-07 | 9437-006-0000 | ND |
2017-03-07 | 9437-010-0000 | ND |
2017-04-04 | 9437-001-0000 | ND |
2017-04-04 | 9437-006-0000 | ND |
2017-04-04 | 9437-010-0000 | ND |
2017-05-02 | 9437-001-0000 | ND |
2017-05-02 | 9437-006-0000 | ND |
2017-05-02 | 9437-010-0000 | ND |
2017-06-06 | 9437-001-0000 | ND |
2017-06-06 | 9437-006-0000 | ND |
2017-06-06 | 9437-010-0000 | ND |
2017-07-11 | 9437-001-0000 | ND |
2017-07-11 | 9437-006-0000 | ND |
2017-07-11 | 9437-010-0000 | ND |
2017-08-08 | 9437-001-0000 | ND |
2017-08-08 | 9437-006-0000 | ND |
2017-08-08 | 9437-010-0000 | ND |
2017-09-12 | 9437-001-0000 | ND |
2017-09-12 | 9437-006-0000 | ND |
2017-09-12 | 9437-010-0000 | ND |
2017-10-03 | 9437-001-0000 | ND |
2017-10-03 | 9437-006-0000 | ND |
2017-10-03 | 9437-010-0000 | ND |
2017-11-07 | 9437-001-0000 | ND |
2017-11-07 | 9437-006-0000 | ND |
2017-11-07 | 9437-010-0000 | ND |
2017-12-05 | 9437-001-0000 | ND |
2017-12-05 | 9437-006-0000 | ND |
2017-12-05 | 9437-010-0000 | ND |
2018-01-09 | 9437-001-0000 | ND |
2018-01-09 | 9437-006-0000 | ND |
2018-01-09 | 9437-010-0000 | ND |
2018-01-24 | 9437-030-0000 | ND |
2018-02-06 | 9437-001-0000 | ND |
2018-02-06 | 9437-006-0000 | ND |
2018-02-06 | 9437-010-0000 | ND |
2018-03-06 | 9437-001-0000 | ND |
2018-03-06 | 9437-006-0000 | ND |
2018-03-06 | 9437-010-0000 | ND |
2018-03-07 | 9437-030-0000 | ND |
2018-04-10 | 9437-001-0000 | ND |
2018-04-10 | 9437-006-0000 | ND |
2018-04-10 | 9437-010-0000 | ND |
2018-05-08 | 9437-001-0000 | ND |
2018-05-08 | 9437-006-0000 | ND |
2018-05-08 | 9437-010-0000 | ND |
2018-05-09 | 9437-030-0000 | ND |
2018-06-05 | 9437-001-0000 | ND |
2018-06-05 | 9437-006-0000 | ND |
2018-06-06 | 9437-030-0000 | ND |
2018-06-12 | 9437-010-0000 | ND |
2018-07-03 | 9437-001-0000 | ND |
2018-07-03 | 9437-006-0000 | ND |
2018-07-03 | 9437-010-0000 | ND |
2018-07-11 | 9437-030-0000 | ND |
2018-08-07 | 9437-001-0000 | ND |
2018-08-07 | 9437-006-0000 | ND |
2018-08-07 | 9437-010-0000 | ND |
2018-08-08 | 9437-030-0000 | ND |
2018-09-04 | 9437-001-0000 | ND |
2018-09-04 | 9437-006-0000 | ND |
2018-09-04 | 9437-010-0000 | ND |
2018-09-05 | 9437-030-0000 | ND |
2018-10-02 | 9437-001-0000 | ND |
2018-10-02 | 9437-006-0000 | ND |
2018-10-02 | 9437-010-0000 | ND |
2018-10-03 | 9437-030-0000 | ND |
2018-11-07 | 9437-030-0000 | ND |
2018-11-13 | 9437-001-0000 | ND |
2018-11-13 | 9437-006-0000 | ND |
2018-11-13 | 9437-010-0000 | ND |
2018-12-04 | 9437-001-0000 | ND |
2018-12-04 | 9437-006-0000 | ND |
2018-12-04 | 9437-010-0000 | ND |
2018-12-05 | 9437-030-0000 | ND |
2019-01-02 | 9437-001-0000 | ND |
2019-01-02 | 9437-006-0000 | ND |
2019-01-02 | 9437-010-0000 | ND |
2019-01-09 | 9437-030-0000 | ND |
2019-02-06 | 9437-030-0000 | ND |
2019-02-19 | 9437-001-0000 | ND |
2019-02-19 | 9437-006-0000 | ND |
2019-02-19 | 9437-010-0000 | ND |
2019-03-05 | 9437-001-0000 | ND |
2019-03-05 | 9437-010-0000 | ND |
2019-03-06 | 9437-030-0000 | ND |
2019-03-19 | 9437-006-0000 | ND |
2019-04-02 | 9437-001-0000 | ND |
2019-04-02 | 9437-006-0000 | ND |
2019-04-02 | 9437-010-0000 | ND |
2019-04-10 | 9437-030-0000 | ND |
2019-05-07 | 9437-001-0000 | ND |
2019-05-07 | 9437-006-0000 | ND |
2019-05-07 | 9437-010-0000 | ND |
2019-05-08 | 9437-030-0000 | ND |
2019-06-04 | 9437-001-0000 | ND |
2019-06-04 | 9437-006-0000 | ND |
2019-06-04 | 9437-010-0000 | ND |
2019-06-05 | 9437-030-0000 | ND |
2019-07-02 | 9437-001-0000 | ND |
2019-07-02 | 9437-006-0000 | ND |
2019-07-02 | 9437-010-0000 | ND |
2019-07-17 | 9437-030-0000 | ND |
2019-08-06 | 9437-001-0000 | ND |
2019-08-06 | 9437-006-0000 | ND |
2019-08-06 | 9437-010-0000 | ND |
2019-08-15 | 9437-030-0000 | ND |
2019-09-03 | 9437-001-0000 | ND |
2019-09-03 | 9437-006-0000 | ND |
2019-09-03 | 9437-010-0000 | ND |
2019-09-05 | 9437-030-0000 | ND |
2019-10-02 | 9437-030-0000 | ND |
2019-10-08 | 9437-001-0000 | ND |
2019-10-08 | 9437-006-0000 | ND |
2019-10-08 | 9437-010-0000 | ND |
2019-11-05 | 9437-001-0000 | ND |
2019-11-05 | 9437-006-0000 | ND |
2019-11-05 | 9437-010-0000 | ND |
2019-11-19 | 9437-030-0000 | ND |
2019-12-03 | 9437-001-0000 | ND |
2019-12-03 | 9437-006-0000 | ND |
2019-12-03 | 9437-010-0000 | ND |