Nitrite
Chrisman
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.
45
Samples
16
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 | 1.12 ppm | 8 | 4 | ND - 3.10 ppm |
| 2019 | 1.59 ppm | 14 | 13 | ND - 2.60 ppm |
| 2020 | 0.824 ppm | 13 | 12 | ND - 1.60 ppm |
| 2021 | 0.868 ppm | 9 | 9 | 0.630 ppm - 1.30 ppm |
| 2022 | ND | 1 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-02-26 | 8024056-01 | 0.330 ppm |
| 2018-06-14 | 8062928-01 | ND |
| 2018-10-03 | 8101159-01 | 3.10 ppm |
| 2018-10-09 | 8102149-01 | 3.10 ppm |
| 2018-10-30 | 8105777-01 | 2.40 ppm |
| 2018-12-03 | 8120260-03 | ND |
| 2018-12-03 | 8120260-04 | ND |
| 2018-12-03 | 8120260-02 | ND |
| 2019-01-10 | 9012130-01 | 0.690 ppm |
| 2019-01-29 | 9014520-01 | 2.40 ppm |
| 2019-02-07 | 9021453-01 | 2.40 ppm |
| 2019-02-19 | 9023324-01 | 0.590 ppm |
| 2019-03-05 | 9030715-01 | 2.00 ppm |
| 2019-04-15 | 9043510-01 | 2.60 ppm |
| 2019-05-20 | 9054140-01 | 2.20 ppm |
| 2019-06-12 | 9062530-01 | 1.90 ppm |
| 2019-07-02 | 9070787-01 | 2.10 ppm |
| 2019-08-15 | 9083592-01 | 2.10 ppm |
| 2019-08-20 | 9084788-01 | 2.20 ppm |
| 2019-09-23 | 9094554-01 | 0.420 ppm |
| 2019-10-17 | 9103985-01 | ND |
| 2019-11-19 | 9113516-01 | 0.720 ppm |
| 2020-01-23 | 0014338-02 | 0.780 ppm |
| 2020-03-17 | 0033277-01 | 0.900 ppm |
| 2020-03-24 | 0034305-01 | 0.810 ppm |
| 2020-04-22 | 0044224-01 | ND |
| 2020-05-05 | 0050867-01 | 0.760 ppm |
| 2020-06-03 | 0061127-01 | 0.590 ppm |
| 2020-07-21 | 0074482-01 | 1.10 ppm |
| 2020-08-03 | 0080365-01 | 0.910 ppm |
| 2020-09-15 | 0093457-01 | 0.690 ppm |
| 2020-10-07 | 0101758-01 | 0.660 ppm |
| 2020-11-04 | 0111114-01 | 1.000 ppm |
| 2020-12-02 | 0120768-01 | 1.60 ppm |
| 2020-12-04 | 0121170-01 | 0.910 ppm |
| 2021-01-12 | EA02046-01 | 0.670 ppm |
| 2021-02-22 | EB03601-01 | 0.720 ppm |
| 2021-03-31 | ED00026-01 | 0.780 ppm |
| 2021-04-12 | ED02349-01 | 0.790 ppm |
| 2021-05-19 | EE03985-01 | 0.920 ppm |
| 2021-06-17 | EF03855-01 | 1.30 ppm |
| 2021-07-07 | EG01353-01 | 1.30 ppm |
| 2021-08-18 | EH04143-01 | 0.630 ppm |
| 2021-09-08 | EI01496-01 | 0.700 ppm |
| 2022-12-22 | FL04292-01 | ND |