Know Your Environment. Protect Your Health.

Nitrate

Jacobs Water Supply Corporation Plants 1 & 2

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)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0443 ppm220.0268 ppm - 0.0618 ppm
20190.0258 ppm220.0241 ppm - 0.0274 ppm
20200.259 ppm220.0264 ppm - 0.492 ppm
20210.0236 ppm220.0189 ppm - 0.0282 ppm
20220.0268 ppm220.0254 ppm - 0.0282 ppm
20230.0267 ppm220.0245 ppm - 0.0288 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
2018-03-26Q18120370030.0618 ppm
2018-03-26Q18120370100.0268 ppm
2019-01-03Q19001750060.0241 ppm
2019-01-03Q19001750130.0274 ppm
2020-05-21Q20203660090.492 ppm
2020-05-21Q20203660100.0264 ppm
2021-11-30Q21330110090.0189 ppm
2021-11-30Q21330110120.0282 ppm
2022-03-10Q22083420110.0282 ppm
2022-03-10Q22083420120.0254 ppm
2023-07-20Q23287460050.0288 ppm
2023-10-19Q23449640050.0245 ppm