Know Your Environment. Protect Your Health.

Nitrate

Artondale

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.50 ppm84ND - 4.60 ppm
20191.30 ppm84ND - 4.39 ppm
2020N/A00N/A
20210.896 ppm106ND - 3.80 ppm
20221.36 ppm84ND - 4.18 ppm
20231.24 ppm84ND - 4.17 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
2018-01-24ND
2018-01-242.60 ppm
2018-01-243.00 ppm
2018-01-24ND
2018-01-24ND
2018-01-24ND
2018-01-241.80 ppm
2018-01-244.60 ppm
2019-02-01ND
2019-02-012.61 ppm
2019-02-012.52 ppm
2019-02-26ND
2019-02-26ND
2019-02-26ND
2019-02-264.39 ppm
2019-03-200.880 ppm
2021-01-294070339ND
2021-01-294070338ND
2021-01-294070337ND
2021-02-1140806503.80 ppm
2021-02-2240811510.610 ppm
2021-02-2340811480.0280 ppm
2021-02-234081067ND
2021-02-2340810662.10 ppm
2021-02-2340810652.40 ppm
2021-03-2940969930.0260 ppm
2022-03-174262946ND
2022-03-174262944ND
2022-03-174262945ND
2022-03-2142732252.72 ppm
2022-03-2842775252.77 ppm
2022-03-284277404ND
2022-03-2842682444.18 ppm
2022-03-2842682481.19 ppm
2023-03-2844346422.22 ppm
2023-03-284453519ND
2023-03-284453884ND
2023-03-284453886ND
2023-03-2844346362.39 ppm
2023-03-2944347211.16 ppm
2023-03-2944347234.17 ppm
2023-03-294434720ND