Know Your Environment. Protect Your Health.

Nitrate

Ranch Hand Apartments

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.18 ppm220.623 ppm - 1.73 ppm
20191.87 ppm220.780 ppm - 2.96 ppm
20200.402 ppm440.174 ppm - 0.719 ppm
20212.18 ppm330.214 ppm - 5.15 ppm
20221.96 ppm330.137 ppm - 4.26 ppm
20232.08 ppm330.111 ppm - 4.59 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
2018-08-22Q18336790021.73 ppm
2018-08-22Q18336790010.623 ppm
2019-02-21Q19077080080.780 ppm
2019-02-21Q19077080202.96 ppm
2020-02-13Q20058870040.719 ppm
2020-02-13Q20058870050.534 ppm
2020-02-13Q20058870070.182 ppm
2020-02-13Q20058870160.174 ppm
2021-08-18Q21223190071.17 ppm
2021-08-18Q21223190090.214 ppm
2021-08-18Q21223190085.15 ppm
2022-06-08Q22161100131.49 ppm
2022-06-08Q22161100144.26 ppm
2022-06-08Q22161100230.137 ppm
2023-03-02Q23085780010.111 ppm
2023-03-02Q23085780121.53 ppm
2023-10-31Q23465800014.59 ppm