Know Your Environment. Protect Your Health.

Nitrate

City of Westworth Village

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)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.235 ppm330.191 ppm - 0.304 ppm
20190.277 ppm330.203 ppm - 0.317 ppm
20200.282 ppm330.247 ppm - 0.346 ppm
20210.166 ppm330.125 ppm - 0.247 ppm
20220.143 ppm330.140 ppm - 0.150 ppm
20230.327 ppm330.315 ppm - 0.344 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
2018-01-22Q18022930020.304 ppm
2018-01-22Q18022930030.210 ppm
2018-01-22Q18022930010.191 ppm
2019-02-06Q19054980010.311 ppm
2019-02-06Q19054980020.317 ppm
2019-02-06Q19054980030.203 ppm
2020-11-23Q20469480020.252 ppm
2020-11-23Q20469480030.247 ppm
2020-11-23Q20469480040.346 ppm
2021-04-28Q21107460020.126 ppm
2021-04-28Q21107460040.247 ppm
2021-04-28Q21107460030.125 ppm
2022-02-09Q22047330010.140 ppm
2022-02-09Q22047330020.140 ppm
2022-02-09Q22047330030.150 ppm
2023-04-13Q23137150020.323 ppm
2023-04-13Q23137150030.315 ppm
2023-04-13Q23137150040.344 ppm