Know Your Environment. Protect Your Health.

Nitrate

Rocky Knoll Mobile Home Park

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.190 ppm220.155 ppm - 0.225 ppm
20190.0660 ppm220.0640 ppm - 0.0680 ppm
20200.0870 ppm220.0850 ppm - 0.0890 ppm
20210.0640 ppm220.0600 ppm - 0.0680 ppm
20220.112 ppm220.0902 ppm - 0.133 ppm
2023ND20ND

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
2018-09-17BI141880.225 ppm
2018-09-17BI141890.155 ppm
2019-07-16BP170320.0680 ppm
2019-07-16BP170330.0640 ppm
2020-08-13BW208020.0850 ppm
2020-08-13BW208030.0890 ppm
2021-09-14CC949710.0680 ppm
2021-09-14CC949720.0600 ppm
2022-07-21CI523910.0902 ppm
2022-07-21CI523920.133 ppm
2023-08-17CP81192ND
2023-08-17CP81195ND