Nitrite
De Land
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.
18
Samples
1
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | 0.384 ppm | 5 | 5 | 0.111 ppm - 1.01 ppm |
| 2016 | 0.274 ppm | 4 | 4 | 0.178 ppm - 0.401 ppm |
| 2017 | 0.220 ppm | 4 | 4 | 0.135 ppm - 0.309 ppm |
| 2018 | 0.0767 ppm | 3 | 1 | ND - 0.230 ppm |
| 2019 | 0.150 ppm | 1 | 1 | 0.150 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-03-24 | SC40634-01_01 | ND |
| 2015-03-09 | SC50172-01_01 | 1.01 ppm |
| 2015-03-17 | SC50369-01_01 | 0.111 ppm |
| 2015-05-05 | SE50109-01_01 | 0.223 ppm |
| 2015-08-10 | SH50465-01_01 | 0.327 ppm |
| 2015-12-14 | SL50442-01_01 | 0.250 ppm |
| 2016-02-02 | 16B0039-01_01 | 0.178 ppm |
| 2016-06-07 | 16F0284-01_01 | 0.280 ppm |
| 2016-09-13 | 16I0429-01_01 | 0.401 ppm |
| 2016-12-07 | 16L0170-01_01 | 0.235 ppm |
| 2017-03-07 | 17C0151-01_01 | 0.135 ppm |
| 2017-05-09 | 17E0349-01_01 | 0.165 ppm |
| 2017-09-12 | 17I0283-01_01 | 0.309 ppm |
| 2017-12-11 | 17L0229-01_01 | 0.272 ppm |
| 2018-03-01 | 3882122 | ND |
| 2018-03-01 | 3882130 | ND |
| 2018-03-07 | 18C0155-01_01 | 0.230 ppm |
| 2019-02-13 | 19B0234-01 | 0.150 ppm |