Nitrate
Arvin Community Services District
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 | 1.69 ppm | 16 | 16 | 0.565 ppm - 5.20 ppm |
| 2015 | 1.80 ppm | 17 | 17 | 0.250 ppm - 5.20 ppm |
| 2016 | 1.57 ppm | 18 | 16 | ND - 4.40 ppm |
| 2017 | 1.73 ppm | 22 | 17 | ND - 4.70 ppm |
| 2018 | 0.807 ppm | 17 | 15 | ND - 4.20 ppm |
| 2019 | 1.17 ppm | 15 | 13 | ND - 4.20 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 |
|---|---|---|
| 2014-01-07 | 5806-001-1005 | 4.97 ppm |
| 2014-01-07 | 5806-009-1017 | 1.54 ppm |
| 2014-01-07 | 5806-016-1059 | 1.15 ppm |
| 2014-01-07 | 5806-018-1043 | 0.610 ppm |
| 2014-04-01 | 5806-001-1120 | 5.20 ppm |
| 2014-04-01 | 5806-009-0959 | 1.76 ppm |
| 2014-04-01 | 5806-016-0927 | 0.836 ppm |
| 2014-04-01 | 5806-018-0940 | 0.565 ppm |
| 2014-07-08 | 5806-001-0918 | 3.16 ppm |
| 2014-07-08 | 5806-009-1007 | 1.92 ppm |
| 2014-07-08 | 5806-016-0935 | 0.904 ppm |
| 2014-07-08 | 5806-018-0950 | 0.633 ppm |
| 2014-10-07 | 5806-001-1012 | 0.723 ppm |
| 2014-10-07 | 5806-009-1120 | 1.76 ppm |
| 2014-10-07 | 5806-016-1026 | 0.791 ppm |
| 2014-10-07 | 5806-018-1058 | 0.587 ppm |
| 2015-01-05 | 5806-001-0945 | 4.74 ppm |
| 2015-01-05 | 5806-016-1012 | 0.994 ppm |
| 2015-01-05 | 5806-018-1034 | 0.587 ppm |
| 2015-05-05 | 5806-001-0921 | 5.20 ppm |
| 2015-05-05 | 5806-016-0959 | 1.02 ppm |
| 2015-05-05 | 5806-018-0945 | 0.633 ppm |
| 2015-07-07 | 5806-001-1001 | 4.07 ppm |
| 2015-07-07 | 5806-016-1017 | 0.655 ppm |
| 2015-07-07 | 5806-018-1032 | 0.633 ppm |
| 2015-08-04 | 5806-001-1015 | 3.00 ppm |
| 2015-08-04 | 5806-016-1036 | 0.670 ppm |
| 2015-08-04 | 5806-018-1051 | 0.640 ppm |
| 2015-09-10 | 5806-009-0936 | 1.70 ppm |
| 2015-10-01 | 5806-001-1025 | 3.10 ppm |
| 2015-10-01 | 5806-009-1008 | 1.70 ppm |
| 2015-10-01 | 5806-016-1037 | 1.10 ppm |
| 2015-10-01 | 5806-018-1127 | 0.250 ppm |
| 2016-01-06 | 5806-001-1148 | 4.30 ppm |
| 2016-01-06 | 5806-009-1115 | 0.790 ppm |
| 2016-01-06 | 5806-016-1051 | 0.920 ppm |
| 2016-01-06 | 5806-018-0938 | 0.260 ppm |
| 2016-04-05 | 5806-001-1012 | 3.10 ppm |
| 2016-04-05 | 5806-009-1035 | 1.50 ppm |
| 2016-04-05 | 5806-016-1213 | 0.960 ppm |
| 2016-04-05 | 5806-018-1229 | 0.300 ppm |
| 2016-07-13 | 5806-001-1133 | 2.40 ppm |
| 2016-07-13 | 5806-009-1017 | 1.30 ppm |
| 2016-07-13 | 5806-016-1052 | 0.820 ppm |
| 2016-09-15 | 5806-018-1120 | ND |
| 2016-10-13 | 5806-001-1203 | 3.90 ppm |
| 2016-10-13 | 5806-009-1221 | 1.70 ppm |
| 2016-10-13 | 5806-016-1120 | 0.990 ppm |
| 2016-10-13 | 5806-018-1137 | ND |
| 2016-10-13 | 5806-020-1009 | 4.40 ppm |
| 2016-10-13 | 5806-022-1041 | 0.640 ppm |
| 2017-01-10 | 5806-001-1153 | 3.00 ppm |
| 2017-01-10 | 5806-009-1104 | 1.30 ppm |
| 2017-01-10 | 5806-016-0954 | 0.750 ppm |
| 2017-01-10 | 5806-018-0936 | ND |
| 2017-01-10 | 5806-020-1025 | 4.70 ppm |
| 2017-01-10 | 5806-022-1129 | ND |
| 2017-05-09 | 5806-001-0844 | 4.40 ppm |
| 2017-05-09 | 5806-009-1000 | ND |
| 2017-05-09 | 5806-016-1142 | 0.770 ppm |
| 2017-05-09 | 5806-020-1057 | 3.70 ppm |
| 2017-05-09 | 5806-022-1122 | 0.600 ppm |
| 2017-07-11 | 5806-001-0831 | 4.30 ppm |
| 2017-07-11 | 5806-009-0906 | 0.960 ppm |
| 2017-07-11 | 5806-016-1011 | 0.800 ppm |
| 2017-07-11 | 5806-020-1028 | 3.70 ppm |
| 2017-07-11 | 5806-022-1001 | 0.180 ppm |
| 2017-10-10 | 5806-001-0930 | 4.00 ppm |
| 2017-10-10 | 5806-009-0950 | ND |
| 2017-10-10 | 5806-016-1015 | 0.500 ppm |
| 2017-10-10 | 5806-018-1158 | ND |
| 2017-10-10 | 5806-020-1035 | 3.70 ppm |
| 2017-10-10 | 5806-022-1055 | 0.670 ppm |
| 2018-01-03 | 5806-001-0825 | 1.90 ppm |
| 2018-01-03 | 5806-009-0958 | 0.110 ppm |
| 2018-01-03 | 5806-016-1024 | 0.740 ppm |
| 2018-01-03 | 5806-018-1111 | ND |
| 2018-01-03 | 5806-020-1148 | 4.20 ppm |
| 2018-01-03 | 5806-022-1231 | 0.750 ppm |
| 2018-04-10 | 5806-009-1020 | 0.340 ppm |
| 2018-04-10 | 5806-016-0902 | 0.840 ppm |
| 2018-04-10 | 5806-018-0838 | ND |
| 2018-04-10 | 5806-022-0942 | 0.790 ppm |
| 2018-07-17 | 5806-009-0847 | 0.730 ppm |
| 2018-07-17 | 5806-016-0744 | 0.960 ppm |
| 2018-07-17 | 5806-018-0822 | 0.350 ppm |
| 2018-10-09 | 5806-009-0907 | 0.770 ppm |
| 2018-10-09 | 5806-016-0803 | 0.730 ppm |
| 2018-10-09 | 5806-018-0846 | 0.260 ppm |
| 2018-10-09 | 5806-022-1008 | 0.250 ppm |
| 2019-01-08 | 5806-009-0815 | 0.940 ppm |
| 2019-01-08 | 5806-016-0844 | 0.590 ppm |
| 2019-01-08 | 5806-018-0810 | 0.430 ppm |
| 2019-04-09 | 5806-016-0951 | 0.790 ppm |
| 2019-04-09 | 5806-018-1006 | 0.110 ppm |
| 2019-04-09 | 5806-020-1114 | 4.20 ppm |
| 2019-04-09 | 5806-022-0916 | 0.660 ppm |
| 2019-07-09 | 5806-016-0859 | 0.710 ppm |
| 2019-07-09 | 5806-018-0940 | ND |
| 2019-07-09 | 5806-020-0834 | 3.50 ppm |
| 2019-07-09 | 5806-022-0925 | 0.660 ppm |
| 2019-10-01 | 5806-016-1059 | 0.760 ppm |
| 2019-10-01 | 5806-018-1030 | ND |
| 2019-10-01 | 5806-020-0955 | 3.50 ppm |
| 2019-10-01 | 5806-022-0950 | 0.700 ppm |