Know Your Environment. Protect Your Health.

Nitrate

Shangri La Subdivision

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)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.634 ppm330.0157 ppm - 1.79 ppm
20190.605 ppm330.0136 ppm - 1.69 ppm
20200.843 ppm330.0207 ppm - 2.46 ppm
20210.0320 ppm32ND - 0.0654 ppm
20220.811 ppm330.0146 ppm - 1.93 ppm
20230.0480 ppm31ND - 0.144 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
2018-11-12Q18454590061.79 ppm
2018-11-12Q18454590100.0966 ppm
2018-11-12Q18454590050.0157 ppm
2019-06-19Q19376630020.112 ppm
2019-06-19Q19376630030.0136 ppm
2019-06-19Q19376630041.69 ppm
2020-06-25Q20256220110.0492 ppm
2020-06-25Q20256220120.0207 ppm
2020-06-25Q20256220132.46 ppm
2021-03-16Q21068170100.0307 ppm
2021-03-16Q21068170120.0654 ppm
2021-03-16Q2106817011ND
2022-03-22Q22091790050.489 ppm
2022-03-22Q22091790060.0146 ppm
2022-03-22Q22091790071.93 ppm
2023-02-21Q2307017005ND
2023-12-04Q23512740010.144 ppm
2023-12-04Q2351274005ND