Know Your Environment. Protect Your Health.

Nitrate

Ponderosa Community Club Inc.

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.535 ppm220.350 ppm - 0.720 ppm
20190.730 ppm220.330 ppm - 1.13 ppm
2020N/A00N/A
20210.875 ppm220.420 ppm - 1.33 ppm
20220.983 ppm880.106 ppm - 1.51 ppm
20230.922 ppm220.293 ppm - 1.55 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
2018-04-120.720 ppm
2018-12-200.350 ppm
2019-04-101.13 ppm
2019-04-100.330 ppm
2021-07-2241462630.420 ppm
2021-07-2241462641.33 ppm
2022-07-0543007570.985 ppm
2022-07-0543007550.106 ppm
2022-07-0543007581.50 ppm
2022-07-0543007591.51 ppm
2022-07-0543007601.50 ppm
2022-07-0543007560.433 ppm
2022-07-1843109021.44 ppm
2022-07-1843109130.393 ppm
2023-07-1744803551.55 ppm
2023-07-1744803560.293 ppm