Know Your Environment. Protect Your Health.

Nitrate

Western Lake Estates

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.186 ppm330.0870 ppm - 0.375 ppm
20190.257 ppm330.0375 ppm - 0.458 ppm
20200.0988 ppm220.0246 ppm - 0.173 ppm
20210.169 ppm330.0590 ppm - 0.379 ppm
20220.0914 ppm330.0402 ppm - 0.130 ppm
20230.0592 ppm330.0383 ppm - 0.0916 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
2018-11-15Q18467660160.0956 ppm
2018-11-15Q18467660200.0870 ppm
2018-11-15Q18467660040.375 ppm
2019-09-17Q19658460100.0375 ppm
2019-09-17Q19658460130.458 ppm
2019-09-17Q19658460140.276 ppm
2020-09-03Q20351870090.0246 ppm
2020-09-03Q20351870100.173 ppm
2021-03-15Q21066110100.0695 ppm
2021-03-15Q21066110110.379 ppm
2021-11-23Q21327860090.0590 ppm
2022-08-02Q22220200010.0402 ppm
2022-10-31Q22330560030.130 ppm
2022-10-31Q22330560040.104 ppm
2023-08-23Q23357660090.0916 ppm
2023-08-23Q23357660100.0476 ppm
2023-08-23Q23357660110.0383 ppm