Know Your Environment. Protect Your Health.

Nitrate

West View Water Authority

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.626 ppm54ND - 0.870 ppm
2019ND20ND
20200.498 ppm52ND - 1.64 ppm
20210.975 ppm220.890 ppm - 1.06 ppm
20220.935 ppm220.890 ppm - 0.980 ppm
20230.830 ppm220.750 ppm - 0.910 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
2018-01-22011826480.790 ppm
2018-03-1218C0710-010.680 ppm
2018-07-1118G0984-010.870 ppm
2018-09-2018I1839-010.790 ppm
2018-12-128121076-01ND
2019-02-119020874-01ND
2019-07-169071866-01ND
2020-01-1325198994.00ND
2020-02-1821755403.001.64 ppm
2020-05-1222313290.00ND
2020-08-1122898252.000.850 ppm
2020-11-1623448594.00ND
2021-02-0823973039.000.890 ppm
2021-02-2523973354.001.06 ppm
2022-01-2526031931.000.980 ppm
2022-01-2626031930.000.890 ppm
2023-01-2428261163.000.910 ppm
2023-01-2428261162.000.750 ppm