Know Your Environment. Protect Your Health.

Nitrate

Calera Canyon Heights Homeowners Association

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.600 ppm32ND - 1.000 ppm
20200.500 ppm21ND - 1.000 ppm
20210.700 ppm220.600 ppm - 0.800 ppm
20220.450 ppm220.200 ppm - 0.700 ppm
20230.550 ppm220.500 ppm - 0.600 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
2019-01-14CA2700523_003_003-201901141630ND
2019-01-14CA2700523_001_001-2019011416001.000 ppm
2019-11-21CA2700523_003_003-2019112107000.800 ppm
2020-02-11CA2700523_001_001-202002110730ND
2020-12-09CA2700523_003_003-2020120917151.000 ppm
2021-06-23CA2700523_001_001-2021062317150.800 ppm
2021-12-20CA2700523_003_003-2021122016150.600 ppm
2022-03-15CA2700523_001_001-2022031511000.700 ppm
2022-11-21CA2700523_003_003-2022112107000.200 ppm
2023-02-22CA2700523_001_001-2023022210450.500 ppm
2023-11-16CA2700523_003_003-2023111610000.600 ppm