Nitrate
Prescott Valley WD Upper
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.567 ppm | 11 | 11 | 0.210 ppm - 1.20 ppm |
| 2015 | 0.594 ppm | 11 | 11 | 0.140 ppm - 1.60 ppm |
| 2016 | 0.754 ppm | 12 | 12 | 0.220 ppm - 2.10 ppm |
| 2017 | 0.718 ppm | 11 | 11 | 0.250 ppm - 1.80 ppm |
| 2018 | 0.828 ppm | 19 | 19 | 0.230 ppm - 1.90 ppm |
| 2019 | 0.851 ppm | 25 | 25 | 0.230 ppm - 4.10 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.
EPA Maximum Contaminant
Level (MCL) 10 ppm
The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-15 | 201401150464I | 0.210 ppm |
| 2014-01-15 | 201401150454I | 0.870 ppm |
| 2014-01-15 | 201401150455I | 0.940 ppm |
| 2014-01-15 | 201401150456I | 0.880 ppm |
| 2014-01-15 | 201401150457I | 1.20 ppm |
| 2014-01-15 | 201401150458I | 0.740 ppm |
| 2014-01-15 | 201401150459I | 0.300 ppm |
| 2014-01-15 | 201401150460I | 0.240 ppm |
| 2014-01-15 | 201401150461I | 0.250 ppm |
| 2014-01-15 | 201401150462I | 0.260 ppm |
| 2014-01-15 | 201401150463I | 0.350 ppm |
| 2015-02-26 | 201502260173I | 0.830 ppm |
| 2015-02-26 | 201502260174I | 1.000 ppm |
| 2015-02-26 | 201502260175I | 0.300 ppm |
| 2015-02-26 | 201502260176I | 1.60 ppm |
| 2015-02-26 | 201502260177I | 0.930 ppm |
| 2015-02-26 | 201502260178I | 0.290 ppm |
| 2015-02-26 | 201502260180I | 0.520 ppm |
| 2015-02-26 | 201502260181I | 0.350 ppm |
| 2015-02-26 | 201502260182I | 0.330 ppm |
| 2015-02-26 | 201502260183I | 0.140 ppm |
| 2015-02-26 | 201502260179I | 0.240 ppm |
| 2016-02-09 | 201602100066I | 1.000 ppm |
| 2016-02-09 | 201602100057I | 0.260 ppm |
| 2016-02-09 | 201602100056I | 1.000 ppm |
| 2016-02-09 | 201602100055I | 1.000 ppm |
| 2016-02-10 | 201602110031I | 0.380 ppm |
| 2016-02-10 | 201602110028I | 1.000 ppm |
| 2016-02-10 | 201602110029I | 1.10 ppm |
| 2016-02-10 | 201602110030I | 2.10 ppm |
| 2016-02-10 | 201602110032I | 0.250 ppm |
| 2016-02-10 | 201602110033I | 0.380 ppm |
| 2016-02-10 | 201602110034I | 0.360 ppm |
| 2016-02-10 | 201602110035I | 0.220 ppm |
| 2017-02-14 | 201702150180I | 1.000 ppm |
| 2017-02-14 | 201702150190I | 0.380 ppm |
| 2017-02-14 | 201702150189I | 0.390 ppm |
| 2017-02-14 | 201702150188I | 0.320 ppm |
| 2017-02-14 | 201702150187I | 0.280 ppm |
| 2017-02-14 | 201702150186I | 0.250 ppm |
| 2017-02-14 | 201702150185I | 0.380 ppm |
| 2017-02-14 | 201702150184I | 1.000 ppm |
| 2017-02-14 | 201702150183I | 1.80 ppm |
| 2017-02-14 | 201702150182I | 1.10 ppm |
| 2017-02-14 | 201702150181I | 1.000 ppm |
| 2018-03-07 | 201803080222I | 0.230 ppm |
| 2018-03-07 | 201803080205I | 0.300 ppm |
| 2018-03-07 | 201803080206I | 0.810 ppm |
| 2018-03-07 | 201803080207I | 1.90 ppm |
| 2018-03-07 | 201803080208I | 0.980 ppm |
| 2018-03-07 | 201803080209I | 1.20 ppm |
| 2018-03-07 | 201803080210I | 1.70 ppm |
| 2018-03-07 | 201803080211I | 0.720 ppm |
| 2018-03-07 | 201803080212I | 1.000 ppm |
| 2018-03-07 | 201803080213I | 1.000 ppm |
| 2018-03-07 | 201803080214I | 1.10 ppm |
| 2018-03-07 | 201803080215I | 1.40 ppm |
| 2018-03-07 | 201803080216I | 0.880 ppm |
| 2018-03-07 | 201803080217I | 0.400 ppm |
| 2018-03-07 | 201803080218I | 0.560 ppm |
| 2018-03-07 | 201803080219I | 0.360 ppm |
| 2018-03-07 | 201803080220I | 0.380 ppm |
| 2018-03-07 | 201803080221I | 0.430 ppm |
| 2018-04-25 | 201804260236I | 0.390 ppm |
| 2019-02-05 | 201902060083I | 0.720 ppm |
| 2019-02-05 | 201902060076I | 0.390 ppm |
| 2019-02-05 | 201902060077I | 0.280 ppm |
| 2019-02-05 | 201902060078I | 0.820 ppm |
| 2019-02-05 | 201902060079I | 2.30 ppm |
| 2019-02-05 | 201902060080I | 1.000 ppm |
| 2019-02-05 | 201902060082I | 1.70 ppm |
| 2019-02-05 | 201902060084I | 0.940 ppm |
| 2019-02-05 | 201902060085I | 1.80 ppm |
| 2019-02-05 | 201902060081I | 4.10 ppm |
| 2019-02-06 | 201902070480I | 0.410 ppm |
| 2019-02-06 | 201902070477I | 0.970 ppm |
| 2019-02-06 | 201902070478I | 1.10 ppm |
| 2019-02-06 | 201902070479I | 0.920 ppm |
| 2019-02-06 | 201902070481I | 0.250 ppm |
| 2019-02-06 | 201902070482I | 0.380 ppm |
| 2019-02-06 | 201902070483I | 0.440 ppm |
| 2019-02-06 | 201902070484I | 0.230 ppm |
| 2019-05-07 | 201905080065I | 0.520 ppm |
| 2019-06-19 | 19F2188-01 | 0.510 ppm |
| 2019-06-24 | 201906250033I | 0.410 ppm |
| 2019-09-16 | 19I1769-02 | 0.240 ppm |
| 2019-09-30 | 19J0031-01 | 0.230 ppm |
| 2019-10-15 | 201910160121I | 0.270 ppm |
| 2019-10-15 | 201910160122I | 0.350 ppm |