Nitrite
Mondamin Water Supply
Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.
49
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.120 ppm | 9 | 3 | ND - 0.400 ppm |
| 2019 | 0.0113 ppm | 8 | 2 | ND - 0.0600 ppm |
| 2020 | 0.0413 ppm | 8 | 4 | ND - 0.140 ppm |
| 2021 | 0.00250 ppm | 8 | 1 | ND - 0.0200 ppm |
| 2022 | 0.0125 ppm | 8 | 1 | ND - 0.1000 ppm |
| 2023 | ND | 8 | 0 | ND |
ppm = parts per million
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 1 ppm
The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-28 | 1C82082-02 | ND |
| 2018-03-28 | 1C82082-01 | ND |
| 2018-06-27 | 1F82304-02 | 0.320 ppm |
| 2018-06-27 | 1F82318-01 | 0.360 ppm |
| 2018-06-27 | 1F82304-01 | 0.400 ppm |
| 2018-09-12 | 1I80891-01 | ND |
| 2018-09-12 | 1I80891-02 | ND |
| 2018-12-31 | 1545200-01 | ND |
| 2018-12-31 | 1545200-02 | ND |
| 2019-02-27 | 1B91791-01 | ND |
| 2019-02-27 | 1B91791-02 | ND |
| 2019-05-21 | 1E91806-01 | ND |
| 2019-05-21 | 1E91806-02 | ND |
| 2019-08-26 | 1H92217-01 | ND |
| 2019-08-26 | 1H92217-02 | 0.0600 ppm |
| 2019-12-10 | 1L90829-01 | 0.0300 ppm |
| 2019-12-10 | 1L90829-02 | ND |
| 2020-01-21 | 1A01424-01 | 0.130 ppm |
| 2020-01-21 | 1A01424-02 | 0.140 ppm |
| 2020-04-29 | 1D02293-01 | ND |
| 2020-04-29 | 1D02293-02 | ND |
| 2020-07-20 | 1G01730-01 | ND |
| 2020-07-20 | 1G01730-02 | ND |
| 2020-10-13 | 1J01283-02 | 0.0300 ppm |
| 2020-10-13 | 1J01283-01 | 0.0300 ppm |
| 2021-01-26 | 1EA1901-01 | ND |
| 2021-01-26 | 1EA1901-02 | ND |
| 2021-04-21 | 1ED2208-01 | 0.0200 ppm |
| 2021-04-21 | 1ED2208-02 | ND |
| 2021-09-09 | 1EI1001-01 | ND |
| 2021-09-09 | 1EI1001-02 | ND |
| 2021-11-10 | 1EK1139-01 | ND |
| 2021-11-10 | 1EK1139-02 | ND |
| 2022-02-09 | 1FB1012-01 | ND |
| 2022-02-09 | 1FB1012-02 | ND |
| 2022-05-04 | 1FE0551-02 | ND |
| 2022-05-04 | 1FE0551-01 | ND |
| 2022-11-02 | 1FK0287-01 | ND |
| 2022-11-02 | 1FK0287-02 | ND |
| 2022-12-20 | 1FL1907-01 | 0.1000 ppm |
| 2022-12-20 | 1FL1907-02 | ND |
| 2023-01-25 | 1GA2223-01 | ND |
| 2023-01-25 | 1GA2223-02 | ND |
| 2023-04-24 | 1GD2461-01 | ND |
| 2023-04-24 | 1GD2461-02 | ND |
| 2023-07-24 | 1GG2240-01 | ND |
| 2023-07-24 | 1GG2240-02 | ND |
| 2023-11-01 | 1GK0177-01 | ND |
| 2023-11-01 | 1GK0177-02 | ND |