Know Your Environment. Protect Your Health.

Nitrate

Cws - Lower Bodfish Water System

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

26

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.25 ppm32ND - 2.84 ppm
20191.47 ppm660.456 ppm - 2.59 ppm
20201.13 ppm65ND - 2.59 ppm
20211.07 ppm330.710 ppm - 1.70 ppm
20221.40 ppm330.900 ppm - 2.20 ppm
20231.25 ppm550.370 ppm - 2.10 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL): 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2018-03-26CA1510056_008_008-2018032609002.84 ppm
2018-03-26CA1510056_010_010-201803260908ND
2018-04-11CA1510056_022_022-2018041112570.912 ppm
2019-04-09CA1510056_008_008-2019040909432.40 ppm
2019-04-09CA1510056_022_022-2019040909161.000 ppm
2019-04-09CA1510056_010_010-2019040911101.30 ppm
2019-11-06CA1510056_008_008-2019110609392.59 ppm
2019-11-06CA1510056_010_010-2019110609500.456 ppm
2019-11-13CA1510056_022_022-2019111311061.05 ppm
2020-01-22CA1510056_010_010-2020012210210.700 ppm
2020-01-22CA1510056_008_008-2020012210102.00 ppm
2020-03-17CA1510056_013_013-2020031711000.880 ppm
2020-03-23CA1510056_022_022-202003231058ND
2020-04-15CA1510056_010_010-2020041511360.633 ppm
2020-04-15CA1510056_008_008-2020041511312.59 ppm
2021-04-20CA1510056_010_010-2021042010060.710 ppm
2021-04-20CA1510056_022_022-2021042009410.800 ppm
2021-04-20CA1510056_008_008-2021042010001.70 ppm
2022-04-12CA1510056_010_010-2022041210370.900 ppm
2022-04-12CA1510056_022_022-2022041210091.10 ppm
2022-04-12CA1510056_008_008-2022041210312.20 ppm
2023-01-12CA1510056_008_008-2023011210311.60 ppm
2023-01-12CA1510056_010_010-2023011210510.370 ppm
2023-03-09CA1510056_013_013-2023030911231.40 ppm
2023-04-13CA1510056_010_010-2023041312190.790 ppm
2023-04-13CA1510056_008_008-2023041312122.10 ppm