Know Your Environment. Protect Your Health.

Nitrate

Prineville, City of

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.

 

49

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.32 ppm87ND - 5.29 ppm
20191.20 ppm86ND - 5.33 ppm
20201.47 ppm98ND - 4.26 ppm
20211.04 ppm98ND - 4.76 ppm
20221.20 ppm87ND - 4.73 ppm
20231.02 ppm770.350 ppm - 1.42 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
2018-08-2118-62841-I0.01000 ppm
2018-08-2118-62842-I5.29 ppm
2018-08-2118-62843-I2.34 ppm
2018-08-2118-62844-IND
2018-08-2118-62845-I0.460 ppm
2018-08-2118-62846-I0.840 ppm
2018-08-2118-62840-I0.710 ppm
2018-11-061884729-I0.890 ppm
2019-05-201935387-I1.65 ppm
2019-05-201935398-I0.750 ppm
2019-05-201935400-I0.400 ppm
2019-05-201935389-I0.870 ppm
2019-05-201935401-IND
2019-05-201935392-I5.33 ppm
2019-05-201935399-IND
2019-05-201935386-I0.610 ppm
2020-03-19X0407794.26 ppm
2020-08-252055580-I0.730 ppm
2020-08-252055575-I4.06 ppm
2020-08-252055574-I0.01000 ppm
2020-08-252055579-I0.380 ppm
2020-08-252055573-I0.680 ppm
2020-08-252055576-I2.13 ppm
2020-08-252055577-IND
2020-08-252055578-I1.01 ppm
2021-02-08X044752-IND
2021-09-142167084-I0.940 ppm
2021-09-142167083-I0.600 ppm
2021-09-142167085-I0.470 ppm
2021-09-142167086-I0.780 ppm
2021-11-302186518-I0.01000 ppm
2021-11-302186519-I4.76 ppm
2021-11-302186521-I0.01000 ppm
2021-11-302186520-I1.83 ppm
2022-05-12X050385-I0.887 ppm
2022-05-2422-33318-I1.27 ppm
2022-05-2422-33327-I0.750 ppm
2022-05-2422-33319-I0.970 ppm
2022-09-2722-59181-I4.73 ppm
2022-09-2722-59184-I0.590 ppm
2022-11-1522-73950-I0.380 ppm
2022-11-1522-73949-IND
2023-12-0523-73205-I0.350 ppm
2023-12-0523-73203-I1.37 ppm
2023-12-0523-73204-I0.610 ppm
2023-12-0523-73183-I1.41 ppm
2023-12-0523-73202-I1.37 ppm
2023-12-0523-73179-I1.42 ppm
2023-12-0523-73201-I0.610 ppm