Know Your Environment. Protect Your Health.

Nitrate and nitrite

Gander Woods Pump District

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.

 

78

Samples

0

Samples exceeding legal limit (MCL)

68

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.366 ppm149ND - 1.12 ppm
20190.527 ppm1311ND - 1.21 ppm
20200.941 ppm1312ND - 2.82 ppm
20210.919 ppm1210ND - 4.74 ppm
20220.647 ppm13130.336 ppm - 1.61 ppm
20231.50 ppm13130.464 ppm - 7.55 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
2018-01-29S7574640.500 ppm
2018-02-12S7577690.600 ppm
2018-03-12S7577890.400 ppm
2018-04-17S7593350.799 ppm
2018-05-24S757794ND
2018-06-01S811935ND
2018-06-07S759480ND
2018-07-19S7578021.12 ppm
2018-08-22S7595420.491 ppm
2018-09-27S7595780.274 ppm
2018-10-01S759584ND
2018-10-10S759589ND
2018-11-13S7578110.565 ppm
2018-12-13S7596700.371 ppm
2019-01-03S7596740.800 ppm
2019-02-14S7596270.316 ppm
2019-03-20S7596830.583 ppm
2019-03-26S8170830.790 ppm
2019-04-11S7596910.953 ppm
2019-05-14S7597000.343 ppm
2019-06-10S7592860.664 ppm
2019-07-25S7597300.310 ppm
2019-08-13S759742ND
2019-09-25S7597090.564 ppm
2019-10-15S759712ND
2019-11-06S7593550.322 ppm
2019-12-10S9199891.21 ppm
2020-01-08S759364ND
2020-02-10S9229770.721 ppm
2020-02-10S9200660.723 ppm
2020-03-04S9229840.394 ppm
2020-04-06S9229892.10 ppm
2020-05-07S9230192.82 ppm
2020-06-16S9230271.51 ppm
2020-07-29S9199920.620 ppm
2020-08-10S9230331.47 ppm
2020-09-22S9920240.615 ppm
2020-10-13S9920120.271 ppm
2020-11-17S9920190.340 ppm
2020-12-07S9982710.651 ppm
2021-01-21S9920711.17 ppm
2021-02-02S10351914.74 ppm
2021-03-08S9920770.550 ppm
2021-04-14S923107ND
2021-05-10S9230790.610 ppm
2021-06-04S9230821.37 ppm
2021-07-02S9231520.252 ppm
2021-08-03S9231590.455 ppm
2021-09-03S11130690.472 ppm
2021-10-08S923202ND
2021-11-12S10735030.340 ppm
2021-12-03S10735131.06 ppm
2022-01-10S9231900.336 ppm
2022-01-21S11368090.787 ppm
2022-02-08S10737900.582 ppm
2022-03-09S10735170.803 ppm
2022-04-07S10737970.791 ppm
2022-05-06S10735670.474 ppm
2022-06-10S10735680.421 ppm
2022-07-01S10735490.510 ppm
2022-08-12S10735350.382 ppm
2022-09-02S9231730.372 ppm
2022-10-04S12230220.559 ppm
2022-11-18S10735531.61 ppm
2022-12-02S10735550.787 ppm
2023-01-10S12230500.464 ppm
2023-02-09S12230570.926 ppm
2023-03-06S12230890.536 ppm
2023-03-09S12570690.867 ppm
2023-04-21S12230650.914 ppm
2023-05-12S12230760.653 ppm
2023-06-02S12230821.00 ppm
2023-07-25S9231171.60 ppm
2023-08-18S10738947.55 ppm
2023-09-22S12231011.85 ppm
2023-10-06S12230680.516 ppm
2023-11-22S10739021.84 ppm
2023-12-21S10738580.815 ppm