Know Your Environment. Protect Your Health.

Nitrate

Washington Ridge C.c.

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020ND50ND
2021ND30ND
2022ND30ND
2023ND30ND

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
2018-08-22CA2910013_002_002-201808221140ND
2018-08-22CA2910013_003_003-201808221130ND
2019-03-27CA2910013_002_002-201903270830ND
2019-03-27CA2910013_003_003-201903270845ND
2019-03-27CA2910013_005_005-201903270900ND
2020-03-11CA2910013_002_002-202003111100ND
2020-03-11CA2910013_003_003-202003111110ND
2020-05-13CA2910013_005_005-202005131600ND
2020-06-16CA2910013_002_002-202006161340ND
2020-06-16CA2910013_003_003-202006161335ND
2021-06-24CA2910013_003_003-202106240900ND
2021-06-24CA2910013_005_005-202106240915ND
2021-06-24CA2910013_002_002-202106240855ND
2022-03-08CA2910013_005_005-202203081138ND
2022-03-08CA2910013_002_002-202203081033ND
2022-03-08CA2910013_003_003-202203081111ND
2023-03-17CA2910013_005_005-202303171030ND
2023-03-17CA2910013_002_002-202303171015ND
2023-03-17CA2910013_003_003-202303171020ND