Know Your Environment. Protect Your Health.

Nitrate and nitrite

Yuima Municipal Water District Ida

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

25

Samples

10

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.20 ppm112.20 ppm
201911.9 ppm773.70 ppm - 23.0 ppm
20201.99 ppm330.980 ppm - 2.90 ppm
202110.4 ppm550.510 ppm - 24.0 ppm
202213.0 ppm882.10 ppm - 30.0 ppm
202311.0 ppm1111.0 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

ppm = parts per million

All test results

Date Lab ID Result
2018-07-10CA3700938_004_004-2018071011052.20 ppm
2019-03-12CA3700938_048_048-2019031210453.70 ppm
2019-06-11CA3700938_005_005-20190611120016.0 ppm
2019-07-09CA3700938_006_006-2019070908006.20 ppm
2019-07-09CA3700938_031_031-20190709073021.0 ppm
2019-07-09CA3700938_012_012-2019070908455.80 ppm
2019-07-09CA3700938_047_047-20190709113023.0 ppm
2019-10-08CA3700938_011_011-2019100808207.70 ppm
2020-06-09CA3700938_037_037-2020060907202.10 ppm
2020-07-14CA3700938_020_020-2020071412002.90 ppm
2020-11-17CA3700938_025_025-2020111708300.980 ppm
2021-04-13CA3700938_005_005-20210413120018.0 ppm
2021-04-13CA3700938_025_025-2021041312450.510 ppm
2021-04-13CA3700938_031_031-20210413125024.0 ppm
2021-04-13CA3700938_006_006-2021041312156.80 ppm
2021-07-13CA3700938_004_004-2021071308452.70 ppm
2022-03-09CA3700938_048_048-2022030913202.10 ppm
2022-07-12CA3700938_012_012-2022071213307.40 ppm
2022-10-12CA3700938_011_011-20221012100011.0 ppm
2022-10-25CA3700938_005_005-20221025114517.0 ppm
2022-10-25CA3700938_012_012-2022102511006.00 ppm
2022-10-25CA3700938_031_031-20221025113024.0 ppm
2022-11-01CA3700938_006_006-2022110114006.70 ppm
2022-12-20CA3700938_047_047-20221220133030.0 ppm
2023-01-10CA3700938_011_011-20230110124011.0 ppm