Know Your Environment. Protect Your Health.

Nitrate

Country Terrace 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0800 ppm220.0300 ppm - 0.130 ppm
20190.295 ppm21ND - 0.590 ppm
20200.135 ppm21ND - 0.270 ppm
2021ND30ND
2022ND30ND
20230.217 ppm32ND - 0.530 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
2018-07-25AE343930.130 ppm
2018-07-25AE344040.0300 ppm
2019-01-14AE494580.590 ppm
2019-01-14AE49459ND
2020-01-15AE935770.270 ppm
2020-01-15AE93578ND
2021-01-12AF38716ND
2021-05-04AF52191ND
2021-05-04AF52224ND
2022-01-21AF81117ND
2022-01-21AF81118ND
2022-03-08AF87923ND
2023-02-09AG281460.120 ppm
2023-02-09AG28147ND
2023-02-09AG281590.530 ppm