Know Your Environment. Protect Your Health.

Nitrate

Concho Rural Water Grape Creek

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.

 

119

Samples

3

Samples exceeding legal limit (MCL)

119

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.39 ppm19190.373 ppm - 18.7 ppm
20195.61 ppm20200.162 ppm - 11.2 ppm
20204.28 ppm20200.162 ppm - 7.53 ppm
20213.86 ppm20200.210 ppm - 6.86 ppm
20223.64 ppm20200.232 ppm - 7.46 ppm
20233.35 ppm20200.182 ppm - 9.55 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
2018-02-21Q18072230066.55 ppm
2018-02-21Q18072230078.19 ppm
2018-02-21Q18072230146.12 ppm
2018-02-21Q18072230177.49 ppm
2018-05-10Q18193790015.90 ppm
2018-05-10Q18193790027.06 ppm
2018-05-10Q18193790048.80 ppm
2018-05-10Q18193790057.17 ppm
2018-08-09Q18320510018.52 ppm
2018-08-09Q18320510026.19 ppm
2018-08-09Q18320510037.00 ppm
2018-08-09Q18320510048.62 ppm
2018-12-05Q184976100118.7 ppm
2018-12-05Q18497610027.49 ppm
2018-12-05Q18497610038.89 ppm
2018-12-05Q184976100410.00 ppm
2018-12-05Q18497610050.373 ppm
2018-12-17Q18517570013.79 ppm
2018-12-20Q18522780013.60 ppm
2019-02-28Q19085910025.13 ppm
2019-02-28Q190859100311.2 ppm
2019-02-28Q19085910047.25 ppm
2019-02-28Q190859100510.3 ppm
2019-02-28Q19085910060.896 ppm
2019-05-16Q19265140020.838 ppm
2019-05-16Q19265140047.04 ppm
2019-05-16Q19265140058.68 ppm
2019-06-26Q19401090013.68 ppm
2019-06-26Q19401090028.28 ppm
2019-07-31Q19495350013.76 ppm
2019-07-31Q19495350026.94 ppm
2019-07-31Q19495350033.76 ppm
2019-07-31Q19495350049.32 ppm
2019-07-31Q19495350050.162 ppm
2019-11-25Q19779710013.88 ppm
2019-11-25Q19779710026.81 ppm
2019-11-25Q19779710035.19 ppm
2019-11-25Q19779710048.64 ppm
2019-11-25Q19779710050.480 ppm
2020-03-04Q20082930124.14 ppm
2020-03-04Q20082930134.24 ppm
2020-03-04Q20082930147.53 ppm
2020-03-18Q20120360053.99 ppm
2020-03-18Q20120360090.643 ppm
2020-05-20Q20201070013.99 ppm
2020-05-20Q20201070027.50 ppm
2020-05-20Q20201070033.98 ppm
2020-05-20Q20201070045.76 ppm
2020-05-20Q20201070050.597 ppm
2020-07-29Q20296590014.13 ppm
2020-07-29Q20296590026.94 ppm
2020-07-29Q20296590033.97 ppm
2020-07-29Q20296590046.04 ppm
2020-07-29Q20296590050.162 ppm
2020-11-17Q20454400014.09 ppm
2020-11-17Q20454400027.12 ppm
2020-11-17Q20454400034.12 ppm
2020-11-17Q20454400046.31 ppm
2020-11-17Q20454400050.287 ppm
2021-03-11Q21065180145.50 ppm
2021-03-11Q21065180150.308 ppm
2021-03-11Q21065180163.65 ppm
2021-03-11Q21065180176.86 ppm
2021-03-11Q21065180183.58 ppm
2021-05-19Q21131080013.58 ppm
2021-05-19Q21131080026.46 ppm
2021-05-19Q21131080033.60 ppm
2021-05-19Q21131080045.16 ppm
2021-05-19Q21131080050.294 ppm
2021-09-15Q21252520013.75 ppm
2021-09-15Q21252520026.55 ppm
2021-09-15Q21252520033.75 ppm
2021-09-15Q21252520045.10 ppm
2021-09-15Q21252520050.210 ppm
2021-11-17Q21323310014.95 ppm
2021-11-17Q21323310023.65 ppm
2021-11-17Q21323310036.33 ppm
2021-11-17Q21323310043.57 ppm
2021-11-17Q21323310050.266 ppm
2022-03-03Q22074580150.232 ppm
2022-03-03Q22074580163.67 ppm
2022-03-03Q22074580177.36 ppm
2022-03-03Q22074580183.64 ppm
2022-03-03Q22074580194.50 ppm
2022-05-19Q22148270013.55 ppm
2022-05-19Q22148270027.46 ppm
2022-05-19Q22148270033.60 ppm
2022-05-19Q22148270044.64 ppm
2022-05-19Q22148270050.294 ppm
2022-07-28Q22216860013.62 ppm
2022-07-28Q22216860023.68 ppm
2022-07-28Q22216860034.62 ppm
2022-07-28Q22216860040.328 ppm
2022-08-04Q22224850013.33 ppm
2022-11-09Q22338500013.47 ppm
2022-11-09Q22338500023.44 ppm
2022-11-09Q22338500030.256 ppm
2022-11-09Q22338500046.66 ppm
2022-11-09Q22338500054.51 ppm
2023-03-09Q23094650016.65 ppm
2023-03-09Q23094650033.29 ppm
2023-03-09Q23094650053.21 ppm
2023-03-09Q23094650074.27 ppm
2023-03-09Q23094650300.285 ppm
2023-05-18Q23187910013.24 ppm
2023-05-18Q23187910023.10 ppm
2023-05-18Q23187910033.14 ppm
2023-05-18Q23187910049.55 ppm
2023-05-18Q23187910050.316 ppm
2023-08-10Q23332140013.25 ppm
2023-08-10Q23332140023.24 ppm
2023-08-10Q23332140033.25 ppm
2023-08-10Q23332140047.34 ppm
2023-08-10Q23332140050.182 ppm
2023-11-08Q23481170010.226 ppm
2023-11-08Q23481170022.96 ppm
2023-11-08Q23481170032.94 ppm
2023-11-08Q23481170042.94 ppm
2023-11-08Q23481170053.70 ppm