Nitrate
City of Ceres
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 5.74 ppm | 49 | 49 | 0.994 ppm - 9.26 ppm |
2015 | 6.39 ppm | 47 | 46 | ND - 10.00 ppm |
2016 | 5.80 ppm | 50 | 50 | 0.880 ppm - 9.80 ppm |
2017 | 6.27 ppm | 51 | 51 | 0.860 ppm - 9.90 ppm |
2018 | 6.16 ppm | 42 | 42 | 0.830 ppm - 12.0 ppm |
2019 | 5.95 ppm | 62 | 62 | 0.760 ppm - 12.0 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 | 5806-016-1115 | 5.42 ppm |
2014-01-07 | 5806-021-0835 | 6.33 ppm |
2014-01-07 | 5806-022-1001 | 7.23 ppm |
2014-01-07 | 5806-028-1058 | 5.20 ppm |
2014-01-07 | 5806-034-1035 | 7.23 ppm |
2014-01-07 | 5806-035-0930 | 9.26 ppm |
2014-01-07 | 5806-038-1105 | 8.13 ppm |
2014-04-07 | 5806-035-1455 | 9.04 ppm |
2014-04-08 | 5806-016-0950 | 4.97 ppm |
2014-04-08 | 5806-021-0910 | 9.26 ppm |
2014-04-08 | 5806-022-0820 | 7.00 ppm |
2014-04-08 | 5806-028-0935 | 5.20 ppm |
2014-04-08 | 5806-034-1040 | 6.55 ppm |
2014-04-08 | 5806-038-0926 | 8.36 ppm |
2014-05-07 | 5806-021-0740 | 6.33 ppm |
2014-05-15 | 5806-039-0850 | 8.58 ppm |
2014-05-15 | 5806-040-0855 | 2.03 ppm |
2014-07-10 | 5806-014-0800 | 1.72 ppm |
2014-07-10 | 5806-014-0815 | 1.76 ppm |
2014-07-10 | 5806-016-1120 | 5.42 ppm |
2014-07-10 | 5806-016-1132 | 5.20 ppm |
2014-07-10 | 5806-021-0730 | 6.33 ppm |
2014-07-10 | 5806-022-1012 | 7.23 ppm |
2014-07-10 | 5806-023-1106 | 1.69 ppm |
2014-07-10 | 5806-027-0716 | 3.16 ppm |
2014-07-10 | 5806-028-1052 | 5.42 ppm |
2014-07-10 | 5806-032-0850 | 1.11 ppm |
2014-07-10 | 5806-034-0800 | 6.78 ppm |
2014-07-10 | 5806-034-1220 | 6.78 ppm |
2014-07-10 | 5806-035-0940 | 9.26 ppm |
2014-07-10 | 5806-035-0945 | 9.26 ppm |
2014-07-10 | 5806-038-1040 | 8.58 ppm |
2014-07-10 | 5806-039-0745 | 8.36 ppm |
2014-07-10 | 5806-040-0748 | 2.17 ppm |
2014-10-07 | 5806-016-0750 | 5.65 ppm |
2014-10-07 | 5806-021-0720 | 5.87 ppm |
2014-10-07 | 5806-022-0945 | 6.78 ppm |
2014-10-07 | 5806-028-0740 | 5.42 ppm |
2014-10-07 | 5806-034-1020 | 5.87 ppm |
2014-10-07 | 5806-035-0855 | 9.26 ppm |
2014-10-07 | 5806-038-1035 | 8.58 ppm |
2014-10-07 | 5806-039-0920 | 8.36 ppm |
2014-10-07 | 5806-040-0915 | 2.19 ppm |
2014-10-29 | 5806-023-0955 | 1.67 ppm |
2014-10-29 | 5806-027-0720 | 3.16 ppm |
2014-10-29 | 5806-032-0835 | 1.02 ppm |
2014-10-29 | 5806-039-0750 | 8.13 ppm |
2014-10-29 | 5806-040-0740 | 2.15 ppm |
2014-11-17 | 5806-032-1015 | 0.994 ppm |
2015-01-07 | 5806-016-0905 | 3.84 ppm |
2015-01-07 | 5806-028-0810 | 4.74 ppm |
2015-01-07 | 5806-034-1030 | 4.97 ppm |
2015-01-07 | 5806-035-1105 | 8.13 ppm |
2015-01-07 | 5806-038-0845 | 7.91 ppm |
2015-01-07 | 5806-039-0920 | 7.45 ppm |
2015-01-07 | 5806-040-0935 | 2.06 ppm |
2015-01-13 | 5806-022-0957 | 7.23 ppm |
2015-01-28 | 5806-021-1030 | 9.94 ppm |
2015-02-23 | 5806-021-0740 | 8.81 ppm |
2015-04-08 | 5806-016-1233 | 5.42 ppm |
2015-04-08 | 5806-022-1027 | 7.45 ppm |
2015-04-08 | 5806-028-1221 | 9.04 ppm |
2015-04-08 | 5806-034-1318 | 7.23 ppm |
2015-04-08 | 5806-035-1008 | 9.49 ppm |
2015-04-08 | 5806-038-1120 | 8.36 ppm |
2015-04-08 | 5806-039-0835 | 8.36 ppm |
2015-05-05 | 5806-032-0750 | 0.971 ppm |
2015-05-27 | 5806-021-0855 | 6.33 ppm |
2015-06-02 | 5806-021-0835 | 6.10 ppm |
2015-07-09 | 5806-014-1105 | 2.48 ppm |
2015-07-09 | 5806-016-1005 | 9.26 ppm |
2015-07-09 | 5806-021-0900 | 8.81 ppm |
2015-07-09 | 5806-022-1140 | 7.00 ppm |
2015-07-09 | 5806-023-1020 | 0.791 ppm |
2015-07-09 | 5806-027-0810 | 3.16 ppm |
2015-07-09 | 5806-028-0945 | 8.81 ppm |
2015-07-09 | 5806-032-0945 | 1.02 ppm |
2015-07-09 | 5806-034-1045 | 7.00 ppm |
2015-07-09 | 5806-035-1205 | 9.26 ppm |
2015-07-09 | 5806-038-0925 | 8.13 ppm |
2015-07-09 | 5806-039-0840 | ND |
2015-07-09 | 5806-040-0830 | 2.26 ppm |
2015-08-04 | 5806-021-0821 | 6.10 ppm |
2015-08-04 | 5806-032-1223 | 1.02 ppm |
2015-08-10 | 5806-039-0905 | 8.13 ppm |
2015-09-01 | 5806-021-0830 | 6.00 ppm |
2015-10-06 | 5806-016-1035 | 9.60 ppm |
2015-10-06 | 5806-021-0927 | 6.30 ppm |
2015-10-06 | 5806-022-0850 | 7.30 ppm |
2015-10-06 | 5806-028-1015 | 9.10 ppm |
2015-10-06 | 5806-034-1120 | 7.70 ppm |
2015-10-06 | 5806-035-0830 | 9.50 ppm |
2015-10-06 | 5806-038-1005 | 8.50 ppm |
2015-10-06 | 5806-039-0945 | 8.50 ppm |
2015-11-04 | 5806-021-0830 | 10.00 ppm |
2015-11-17 | 5806-032-0855 | 0.780 ppm |
2016-01-08 | 5806-016-0920 | 5.50 ppm |
2016-01-08 | 5806-039-0840 | 8.10 ppm |
2016-01-08 | 5806-040-0830 | 2.40 ppm |
2016-01-12 | 5806-022-1440 | 5.80 ppm |
2016-01-12 | 5806-038-1420 | 8.00 ppm |
2016-01-15 | 5806-034-0930 | 5.90 ppm |
2016-01-15 | 5806-035-0830 | 9.40 ppm |
2016-01-19 | 5806-028-1310 | 5.40 ppm |
2016-02-01 | 5806-032-1000 | 0.950 ppm |
2016-02-04 | 5806-022-0730 | 6.10 ppm |
2016-03-01 | 5806-022-1422 | 7.00 ppm |
2016-04-06 | 5806-016-0900 | 5.60 ppm |
2016-04-06 | 5806-022-0810 | 6.10 ppm |
2016-04-06 | 5806-032-0730 | 0.880 ppm |
2016-04-07 | 5806-035-0825 | 9.20 ppm |
2016-04-07 | 5806-038-0920 | 8.20 ppm |
2016-04-11 | 5806-028-0840 | 5.50 ppm |
2016-04-11 | 5806-034-0810 | 5.90 ppm |
2016-04-11 | 5806-039-0740 | 8.10 ppm |
2016-04-11 | 5806-040-0733 | 2.50 ppm |
2016-05-04 | 5806-022-0816 | 6.10 ppm |
2016-05-04 | 5806-038-0922 | 8.30 ppm |
2016-06-07 | 5806-022-1010 | 6.90 ppm |
2016-07-12 | 5806-014-1040 | 2.20 ppm |
2016-07-12 | 5806-016-1015 | 5.20 ppm |
2016-07-12 | 5806-022-1235 | 6.80 ppm |
2016-07-12 | 5806-023-1320 | 0.990 ppm |
2016-07-12 | 5806-027-0810 | 3.30 ppm |
2016-07-12 | 5806-028-0945 | 5.50 ppm |
2016-07-12 | 5806-032-0730 | 0.890 ppm |
2016-07-12 | 5806-034-1155 | 5.80 ppm |
2016-07-12 | 5806-035-1105 | 9.00 ppm |
2016-07-12 | 5806-038-0925 | 8.40 ppm |
2016-07-12 | 5806-039-0848 | 7.80 ppm |
2016-07-12 | 5806-040-0855 | 2.40 ppm |
2016-08-03 | 5806-022-0843 | 6.70 ppm |
2016-09-01 | 5806-022-0848 | 6.50 ppm |
2016-10-06 | 5806-016-1035 | 9.80 ppm |
2016-10-06 | 5806-028-0905 | 5.70 ppm |
2016-10-06 | 5806-032-0950 | 0.960 ppm |
2016-10-06 | 5806-034-1140 | 6.30 ppm |
2016-10-06 | 5806-035-1205 | 9.10 ppm |
2016-10-06 | 5806-038-0850 | 8.90 ppm |
2016-10-06 | 5806-039-1120 | 8.00 ppm |
2016-10-06 | 5806-040-1115 | 2.40 ppm |
2016-10-11 | 5806-022-1000 | 5.80 ppm |
2016-11-15 | 5806-022-1100 | 7.30 ppm |
2016-11-15 | 5806-027-0950 | 3.50 ppm |
2016-12-05 | 5806-022-0935 | 6.00 ppm |
2016-12-07 | 5806-022-1028 | 6.90 ppm |
2017-01-24 | 5806-016-0908 | 9.50 ppm |
2017-01-24 | 5806-022-1110 | 7.10 ppm |
2017-01-24 | 5806-028-0850 | 6.10 ppm |
2017-01-24 | 5806-032-0815 | 0.920 ppm |
2017-01-24 | 5806-034-1045 | 7.50 ppm |
2017-01-24 | 5806-035-1130 | 9.30 ppm |
2017-01-24 | 5806-039-1002 | 8.20 ppm |
2017-01-24 | 5806-040-1005 | 2.60 ppm |
2017-01-25 | 5806-038-0800 | 9.80 ppm |
2017-02-06 | 5806-022-0830 | 7.00 ppm |
2017-02-06 | 5806-030-0832 | 7.20 ppm |
2017-03-08 | 5806-022-0945 | 6.90 ppm |
2017-04-12 | 5806-016-1110 | 9.90 ppm |
2017-04-12 | 5806-022-0910 | 7.00 ppm |
2017-04-12 | 5806-028-1030 | 6.90 ppm |
2017-04-12 | 5806-030-0916 | 7.00 ppm |
2017-04-12 | 5806-032-0805 | 0.920 ppm |
2017-04-12 | 5806-035-0845 | 9.10 ppm |
2017-04-12 | 5806-038-1010 | 8.70 ppm |
2017-04-12 | 5806-039-0950 | 8.20 ppm |
2017-04-12 | 5806-040-0940 | 2.60 ppm |
2017-04-18 | 5806-034-0955 | 9.20 ppm |
2017-05-03 | 5806-022-0935 | 6.40 ppm |
2017-05-03 | 5806-038-0830 | 8.40 ppm |
2017-06-07 | 5806-022-0950 | 7.00 ppm |
2017-07-20 | 5806-014-1245 | 2.60 ppm |
2017-07-20 | 5806-016-0910 | 6.00 ppm |
2017-07-20 | 5806-022-1013 | 6.80 ppm |
2017-07-20 | 5806-023-1305 | 1.30 ppm |
2017-07-20 | 5806-027-0810 | 3.30 ppm |
2017-07-20 | 5806-028-0850 | 5.70 ppm |
2017-07-20 | 5806-032-0720 | 0.910 ppm |
2017-07-20 | 5806-034-1110 | 7.30 ppm |
2017-07-20 | 5806-035-1040 | 8.90 ppm |
2017-07-20 | 5806-038-0830 | 8.80 ppm |
2017-07-20 | 5806-039-0940 | 7.70 ppm |
2017-07-20 | 5806-040-0930 | 2.50 ppm |
2017-08-02 | 5806-022-0912 | 6.10 ppm |
2017-09-06 | 5806-022-0950 | 7.00 ppm |
2017-10-10 | 5806-016-0850 | 5.30 ppm |
2017-10-10 | 5806-022-1048 | 7.10 ppm |
2017-10-10 | 5806-028-0915 | 5.80 ppm |
2017-10-10 | 5806-030-1053 | 7.10 ppm |
2017-10-10 | 5806-032-1011 | 0.860 ppm |
2017-10-10 | 5806-034-1145 | 7.70 ppm |
2017-10-10 | 5806-035-0750 | 9.10 ppm |
2017-10-10 | 5806-038-0930 | 9.10 ppm |
2017-10-10 | 5806-040-0945 | 2.90 ppm |
2017-11-07 | 5806-022-1022 | 7.00 ppm |
2017-11-07 | 5806-027-1000 | 3.40 ppm |
2017-12-05 | 5806-022-0953 | 6.20 ppm |
2018-01-03 | 5806-022-0815 | 6.00 ppm |
2018-01-03 | 5806-030-0817 | 6.00 ppm |
2018-01-17 | 5806-016-1100 | 5.60 ppm |
2018-01-17 | 5806-028-1000 | 6.00 ppm |
2018-01-17 | 5806-034-1145 | 7.30 ppm |
2018-01-17 | 5806-035-0745 | 9.20 ppm |
2018-01-17 | 5806-038-1015 | 9.20 ppm |
2018-01-17 | 5806-040-0920 | 2.90 ppm |
2018-01-23 | 5806-039-0720 | 7.80 ppm |
2018-02-06 | 5806-022-0844 | 6.70 ppm |
2018-04-11 | 5806-016-0925 | 5.50 ppm |
2018-04-11 | 5806-022-0820 | 6.40 ppm |
2018-04-11 | 5806-028-0910 | 5.80 ppm |
2018-04-11 | 5806-030-0816 | 6.90 ppm |
2018-04-11 | 5806-034-1000 | 7.80 ppm |
2018-04-11 | 5806-038-1105 | 12.0 ppm |
2018-04-11 | 5806-039-1135 | 7.40 ppm |
2018-04-11 | 5806-040-1130 | 2.90 ppm |
2018-04-16 | 5806-035-0725 | 9.30 ppm |
2018-07-11 | 5806-014-1130 | 2.50 ppm |
2018-07-11 | 5806-016-1040 | 5.90 ppm |
2018-07-11 | 5806-022-0922 | 7.00 ppm |
2018-07-11 | 5806-023-1105 | 1.70 ppm |
2018-07-11 | 5806-027-0905 | 3.40 ppm |
2018-07-11 | 5806-028-1025 | 6.10 ppm |
2018-07-11 | 5806-032-0810 | 0.850 ppm |
2018-07-11 | 5806-034-1150 | 4.90 ppm |
2018-07-11 | 5806-035-0845 | 9.00 ppm |
2018-07-11 | 5806-040-0950 | 2.90 ppm |
2018-07-26 | 5806-030-0905 | 6.20 ppm |
2018-10-02 | 5806-016-0930 | 6.30 ppm |
2018-10-02 | 5806-022-1100 | 5.90 ppm |
2018-10-02 | 5806-028-0945 | 6.50 ppm |
2018-10-02 | 5806-032-1140 | 0.830 ppm |
2018-10-02 | 5806-034-1000 | 8.40 ppm |
2018-10-02 | 5806-035-1120 | 9.00 ppm |
2018-10-02 | 5806-040-1030 | 3.20 ppm |
2018-10-22 | 5806-022-0825 | 7.20 ppm |
2018-10-22 | 5806-030-0825 | 7.20 ppm |
2018-11-06 | 5806-027-0920 | 3.30 ppm |
2018-11-06 | 5806-038-1010 | 10.00 ppm |
2018-11-26 | 5806-038-0745 | 9.90 ppm |
2019-01-15 | 5806-016-1025 | 6.00 ppm |
2019-01-15 | 5806-022-0915 | 6.90 ppm |
2019-01-15 | 5806-028-1010 | 6.60 ppm |
2019-01-15 | 5806-030-0917 | 7.10 ppm |
2019-01-15 | 5806-034-1100 | 7.90 ppm |
2019-01-15 | 5806-035-0845 | 9.50 ppm |
2019-01-15 | 5806-040-0950 | 3.30 ppm |
2019-01-23 | 5806-038-1440 | 12.0 ppm |
2019-01-23 | 5806-039-1130 | 8.60 ppm |
2019-04-09 | 5806-016-1035 | 5.80 ppm |
2019-04-09 | 5806-022-1300 | 6.20 ppm |
2019-04-09 | 5806-028-1020 | 6.00 ppm |
2019-04-09 | 5806-030-1315 | 6.10 ppm |
2019-04-09 | 5806-035-0935 | 9.50 ppm |
2019-04-09 | 5806-038-1000 | 9.50 ppm |
2019-04-09 | 5806-039-1345 | 8.50 ppm |
2019-04-09 | 5806-040-0815 | 3.30 ppm |
2019-07-09 | 5806-014-1040 | 2.50 ppm |
2019-07-09 | 5806-016-0945 | 6.20 ppm |
2019-07-09 | 5806-022-1125 | 7.10 ppm |
2019-07-09 | 5806-023-1015 | 0.760 ppm |
2019-07-09 | 5806-028-0915 | 6.20 ppm |
2019-07-09 | 5806-030-1125 | 6.80 ppm |
2019-07-09 | 5806-035-1205 | 9.60 ppm |
2019-07-09 | 5806-039-1320 | 8.30 ppm |
2019-07-09 | 5806-040-0845 | 3.20 ppm |
2019-07-22 | 5806-034-0940 | 7.00 ppm |
2019-08-19 | 5806-039-1415 | 9.00 ppm |
2019-08-19 | 5806-040-1420 | 3.60 ppm |
2019-08-20 | 5806-039-1025 | 8.90 ppm |
2019-08-20 | 5806-040-1020 | 3.50 ppm |
2019-09-24 | 5806-038-0945 | 9.60 ppm |
2019-09-24 | 5806-039-0858 | 8.40 ppm |
2019-09-24 | 5806-040-0855 | 3.30 ppm |
2019-09-24 | 5806-054-0900 | 4.70 ppm |
2019-09-30 | 5806-054-1315 | 5.50 ppm |
2019-10-03 | 5806-054-0740 | 4.60 ppm |
2019-10-08 | 5806-016-1030 | 6.40 ppm |
2019-10-08 | 5806-022-0900 | 7.20 ppm |
2019-10-08 | 5806-027-0930 | 3.60 ppm |
2019-10-08 | 5806-028-1015 | 6.20 ppm |
2019-10-08 | 5806-030-0910 | 7.40 ppm |
2019-10-08 | 5806-032-0740 | 1.10 ppm |
2019-10-08 | 5806-035-0830 | 10.00 ppm |
2019-10-08 | 5806-038-1000 | 9.70 ppm |
2019-10-08 | 5806-039-1208 | 8.00 ppm |
2019-10-08 | 5806-040-1205 | 3.40 ppm |
2019-10-08 | 5806-054-1210 | 4.90 ppm |
2019-10-14 | 5806-054-1030 | 4.10 ppm |
2019-10-21 | 5806-054-0950 | 3.70 ppm |
2019-10-28 | 5806-054-0930 | 5.50 ppm |
2019-11-05 | 5806-039-0926 | 8.30 ppm |
2019-11-05 | 5806-040-0930 | 3.50 ppm |
2019-11-05 | 5806-054-0933 | 5.60 ppm |
2019-11-12 | 5806-054-0910 | 3.90 ppm |
2019-11-18 | 5806-054-1005 | 4.40 ppm |
2019-11-25 | 5806-054-0850 | 3.60 ppm |
2019-12-02 | 5806-054-1030 | 3.50 ppm |
2019-12-10 | 5806-054-1010 | 3.00 ppm |
2019-12-16 | 5806-054-0730 | 2.50 ppm |
2019-12-23 | 5806-054-0922 | 3.20 ppm |
2019-12-30 | 5806-054-1318 | 4.60 ppm |