Know Your Environment. Protect Your Health.

Nitrate

Woden Water Supply Corporation

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0135 ppm64ND - 0.0253 ppm
20190.00807 ppm63ND - 0.0165 ppm
20200.00860 ppm63ND - 0.0194 ppm
20210.0159 ppm65ND - 0.0281 ppm
20220.0103 ppm63ND - 0.0291 ppm
20230.0113 ppm64ND - 0.0246 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
2018-03-20Q18110910080.0253 ppm
2018-03-20Q1811091007ND
2018-03-20Q18110910240.0131 ppm
2018-03-20Q18110910230.0231 ppm
2018-03-20Q1811091022ND
2018-03-20Q18110910210.0193 ppm
2019-01-16Q19023430010.0157 ppm
2019-01-16Q19023430020.0162 ppm
2019-01-16Q1902343003ND
2019-01-16Q19023430150.0165 ppm
2019-01-16Q1902343016ND
2019-10-08Q1972051004ND
2020-04-07Q20140040180.0162 ppm
2020-04-07Q2014004019ND
2020-04-07Q2014004020ND
2020-11-04Q2042876017ND
2020-11-04Q20428760180.0160 ppm
2020-11-04Q20428760190.0194 ppm
2021-03-16Q21069230040.0182 ppm
2021-05-18Q21129860030.0113 ppm
2021-10-11Q21280640130.0249 ppm
2021-10-11Q2128064014ND
2021-10-11Q21280640150.0130 ppm
2021-10-11Q21280640160.0281 ppm
2022-03-03Q22073920040.0142 ppm
2022-06-15Q2216701012ND
2022-06-15Q2216701017ND
2022-06-15Q2216701016ND
2022-06-15Q22167010110.0187 ppm
2022-06-15Q22167010010.0291 ppm
2023-03-01Q2308261001ND
2023-06-27Q23246010240.0112 ppm
2023-06-27Q23246010250.0246 ppm
2023-06-27Q23246010260.0176 ppm
2023-06-27Q23246010270.0144 ppm
2023-06-27Q2324601028ND