Nitrate
Strathmore Public Utility 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 | 6.25 ppm | 56 | 56 | 4.52 ppm - 14.5 ppm |
2015 | 5.22 ppm | 55 | 55 | 3.40 ppm - 14.5 ppm |
2016 | 6.24 ppm | 56 | 56 | 4.20 ppm - 14.0 ppm |
2017 | 3.07 ppm | 55 | 35 | ND - 13.0 ppm |
2018 | 4.41 ppm | 56 | 56 | 2.50 ppm - 13.0 ppm |
2019 | 4.42 ppm | 56 | 56 | 2.40 ppm - 14.0 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 |
---|---|---|
2014-01-06 | 5810-008-0920 | 5.42 ppm |
2014-01-13 | 5810-008-0915 | 5.42 ppm |
2014-01-20 | 5810-008-0940 | 6.10 ppm |
2014-01-27 | 5810-008-1025 | 5.87 ppm |
2014-02-03 | 5810-008-1027 | 6.10 ppm |
2014-02-10 | 5810-008-0908 | 5.87 ppm |
2014-02-18 | 5810-002-1058 | 14.2 ppm |
2014-02-18 | 5810-008-0920 | 5.87 ppm |
2014-02-24 | 5810-008-1000 | 5.65 ppm |
2014-03-03 | 5810-008-0945 | 5.87 ppm |
2014-03-10 | 5810-008-1008 | 5.65 ppm |
2014-03-17 | 5810-008-1000 | 5.65 ppm |
2014-03-24 | 5810-008-1028 | 5.42 ppm |
2014-03-31 | 5810-008-0939 | 5.65 ppm |
2014-04-07 | 5810-008-0946 | 5.65 ppm |
2014-04-14 | 5810-008-0957 | 5.65 ppm |
2014-04-21 | 5810-008-0954 | 5.20 ppm |
2014-04-28 | 5810-008-0925 | 5.42 ppm |
2014-05-05 | 5810-008-0919 | 5.42 ppm |
2014-05-12 | 5810-008-0945 | 5.20 ppm |
2014-05-19 | 5810-002-1123 | 14.2 ppm |
2014-05-19 | 5810-008-0920 | 5.65 ppm |
2014-05-27 | 5810-008-0905 | 5.42 ppm |
2014-06-02 | 5810-008-0920 | 5.42 ppm |
2014-06-09 | 5810-008-1104 | 5.65 ppm |
2014-06-16 | 5810-008-0955 | 5.87 ppm |
2014-06-23 | 5810-008-0918 | 6.10 ppm |
2014-06-30 | 5810-008-1105 | 6.10 ppm |
2014-07-07 | 5810-008-1017 | 4.52 ppm |
2014-07-14 | 5810-008-1025 | 4.74 ppm |
2014-07-21 | 5810-008-0950 | 4.74 ppm |
2014-07-28 | 5810-008-0927 | 4.74 ppm |
2014-08-04 | 5810-008-0948 | 4.74 ppm |
2014-08-11 | 5810-002-1206 | 14.5 ppm |
2014-08-11 | 5810-008-0954 | 4.74 ppm |
2014-08-18 | 5810-008-1034 | 4.74 ppm |
2014-08-25 | 5810-008-0958 | 4.52 ppm |
2014-09-04 | 5810-008-1125 | 4.52 ppm |
2014-09-08 | 5810-008-0945 | 4.74 ppm |
2014-09-15 | 5810-008-0947 | 4.74 ppm |
2014-09-22 | 5810-008-0915 | 4.74 ppm |
2014-09-29 | 5810-008-1006 | 4.74 ppm |
2014-10-06 | 5810-008-1020 | 4.74 ppm |
2014-10-13 | 5810-008-1008 | 4.74 ppm |
2014-10-20 | 5810-008-0935 | 4.74 ppm |
2014-10-27 | 5810-008-0935 | 5.65 ppm |
2014-11-03 | 5810-008-0900 | 6.33 ppm |
2014-11-10 | 5810-002-1138 | 14.0 ppm |
2014-11-10 | 5810-008-1008 | 8.13 ppm |
2014-11-17 | 5810-008-0940 | 9.49 ppm |
2014-11-24 | 5810-008-1002 | 9.49 ppm |
2014-12-01 | 5810-008-0950 | 9.04 ppm |
2014-12-08 | 5810-008-1001 | 7.68 ppm |
2014-12-15 | 5810-008-0929 | 5.42 ppm |
2014-12-22 | 5810-008-1026 | 4.74 ppm |
2014-12-29 | 5810-008-0923 | 4.74 ppm |
2015-01-05 | 5810-008-1100 | 4.52 ppm |
2015-01-12 | 5810-008-0956 | 4.52 ppm |
2015-01-19 | 5810-008-1036 | 4.52 ppm |
2015-01-26 | 5810-008-1029 | 4.74 ppm |
2015-02-02 | 5810-008-1024 | 4.74 ppm |
2015-02-09 | 5810-002-1144 | 14.5 ppm |
2015-02-09 | 5810-008-1107 | 4.74 ppm |
2015-02-17 | 5810-008-0957 | 4.74 ppm |
2015-02-23 | 5810-008-1012 | 4.97 ppm |
2015-03-02 | 5810-008-1035 | 4.97 ppm |
2015-03-09 | 5810-008-0925 | 4.97 ppm |
2015-03-17 | 5810-008-0930 | 4.74 ppm |
2015-03-23 | 5810-008-1005 | 4.74 ppm |
2015-03-30 | 5810-008-0955 | 4.74 ppm |
2015-04-06 | 5810-008-0948 | 6.10 ppm |
2015-04-13 | 5810-008-0939 | 5.20 ppm |
2015-04-20 | 5810-008-1008 | 4.29 ppm |
2015-04-27 | 5810-008-1023 | 4.74 ppm |
2015-05-04 | 5810-002-1124 | 14.0 ppm |
2015-05-04 | 5810-008-0936 | 4.97 ppm |
2015-05-11 | 5810-008-0941 | 5.42 ppm |
2015-05-18 | 5810-008-0906 | 5.42 ppm |
2015-05-26 | 5810-008-1032 | 5.87 ppm |
2015-06-01 | 5810-008-1009 | 5.42 ppm |
2015-06-08 | 5810-008-0946 | 4.97 ppm |
2015-06-15 | 5810-008-1031 | 4.52 ppm |
2015-06-22 | 5810-008-0955 | 4.29 ppm |
2015-06-29 | 5810-008-1041 | 4.07 ppm |
2015-07-06 | 5810-008-1000 | 3.84 ppm |
2015-07-13 | 5810-008-1030 | 3.84 ppm |
2015-07-20 | 5810-008-0927 | 3.84 ppm |
2015-08-03 | 5810-008-1006 | 3.84 ppm |
2015-08-10 | 5810-002-1250 | 13.6 ppm |
2015-08-10 | 5810-008-1025 | 3.84 ppm |
2015-08-17 | 5810-008-1020 | 3.84 ppm |
2015-08-24 | 5810-008-0940 | 3.84 ppm |
2015-08-31 | 5810-008-1032 | 3.61 ppm |
2015-09-08 | 5810-008-1017 | 3.70 ppm |
2015-09-14 | 5810-008-1006 | 3.61 ppm |
2015-09-21 | 5810-008-0930 | 3.70 ppm |
2015-09-28 | 5810-008-0911 | 3.60 ppm |
2015-10-05 | 5810-008-1125 | 3.60 ppm |
2015-10-12 | 5810-008-1025 | 3.70 ppm |
2015-10-19 | 5810-008-1120 | 3.90 ppm |
2015-10-26 | 5810-008-1043 | 3.70 ppm |
2015-11-02 | 5810-008-0946 | 3.40 ppm |
2015-11-09 | 5810-008-0940 | 3.60 ppm |
2015-11-16 | 5810-002-1210 | 14.0 ppm |
2015-11-16 | 5810-008-0946 | 3.60 ppm |
2015-11-23 | 5810-008-0921 | 4.60 ppm |
2015-11-30 | 5810-008-0932 | 6.10 ppm |
2015-12-07 | 5810-008-1004 | 5.90 ppm |
2015-12-14 | 5810-008-1010 | 5.80 ppm |
2015-12-21 | 5810-008-0950 | 5.70 ppm |
2015-12-28 | 5810-008-0942 | 5.40 ppm |
2016-01-04 | 5810-008-1045 | 5.40 ppm |
2016-01-11 | 5810-008-0926 | 5.50 ppm |
2016-01-18 | 5810-008-1205 | 5.10 ppm |
2016-01-25 | 5810-008-0957 | 5.60 ppm |
2016-02-01 | 5810-008-1058 | 6.40 ppm |
2016-02-08 | 5810-002-1156 | 14.0 ppm |
2016-02-08 | 5810-008-1130 | 7.10 ppm |
2016-02-16 | 5810-008-0950 | 7.10 ppm |
2016-02-22 | 5810-008-1138 | 7.40 ppm |
2016-02-29 | 5810-008-0930 | 6.20 ppm |
2016-03-07 | 5810-008-1043 | 7.00 ppm |
2016-03-14 | 5810-008-1045 | 7.00 ppm |
2016-03-21 | 5810-008-1009 | 6.70 ppm |
2016-03-28 | 5810-008-1016 | 6.20 ppm |
2016-04-04 | 5810-008-1100 | 6.00 ppm |
2016-04-11 | 5810-008-1145 | 5.90 ppm |
2016-04-18 | 5810-008-1024 | 5.90 ppm |
2016-04-25 | 5810-008-0953 | 6.00 ppm |
2016-05-02 | 5810-008-1048 | 5.80 ppm |
2016-05-09 | 5810-008-0922 | 6.10 ppm |
2016-05-16 | 5810-008-0954 | 5.60 ppm |
2016-05-20 | 5810-002-1240 | 14.0 ppm |
2016-05-23 | 5810-008-0850 | 5.50 ppm |
2016-05-31 | 5810-008-0915 | 5.60 ppm |
2016-06-06 | 5810-008-0905 | 5.00 ppm |
2016-06-13 | 5810-008-1005 | 5.20 ppm |
2016-06-20 | 5810-008-0912 | 5.40 ppm |
2016-06-27 | 5810-008-1130 | 5.10 ppm |
2016-07-05 | 5810-008-1035 | 5.20 ppm |
2016-07-11 | 5810-008-0950 | 5.20 ppm |
2016-07-18 | 5810-008-1005 | 5.20 ppm |
2016-07-25 | 5810-008-1020 | 5.10 ppm |
2016-08-01 | 5810-008-1002 | 4.20 ppm |
2016-08-08 | 5810-002-1500 | 14.0 ppm |
2016-08-08 | 5810-008-0932 | 5.30 ppm |
2016-08-15 | 5810-008-1100 | 5.10 ppm |
2016-08-22 | 5810-008-1036 | 5.10 ppm |
2016-08-29 | 5810-008-1020 | 5.20 ppm |
2016-09-06 | 5810-008-0922 | 5.10 ppm |
2016-09-12 | 5810-008-1026 | 5.10 ppm |
2016-09-19 | 5810-008-1055 | 5.10 ppm |
2016-09-26 | 5810-008-0920 | 5.20 ppm |
2016-10-03 | 5810-008-1006 | 5.20 ppm |
2016-10-10 | 5810-008-0953 | 5.10 ppm |
2016-10-17 | 5810-008-1008 | 5.10 ppm |
2016-10-24 | 5810-008-1010 | 5.00 ppm |
2016-10-31 | 5810-008-1100 | 5.20 ppm |
2016-11-07 | 5810-002-1245 | 5.00 ppm |
2016-11-07 | 5810-008-1009 | 13.0 ppm |
2016-11-14 | 5810-008-1150 | 5.80 ppm |
2016-11-21 | 5810-008-1105 | 6.30 ppm |
2016-11-28 | 5810-008-0910 | 6.00 ppm |
2016-12-05 | 5810-008-1050 | 6.00 ppm |
2016-12-12 | 5810-008-1017 | 6.00 ppm |
2016-12-19 | 5810-008-0931 | 5.80 ppm |
2016-12-27 | 5810-008-1026 | 6.00 ppm |
2017-01-03 | 5810-008-1010 | 6.10 ppm |
2017-01-09 | 5810-008-1112 | 5.10 ppm |
2017-01-16 | 5810-008-1107 | 5.60 ppm |
2017-01-23 | 5810-008-1108 | 5.50 ppm |
2017-01-30 | 5810-008-1125 | 5.60 ppm |
2017-02-06 | 5810-002-1325 | 13.0 ppm |
2017-02-06 | 5810-008-1016 | 5.70 ppm |
2017-02-13 | 5810-008-1012 | 5.60 ppm |
2017-02-21 | 5810-008-0942 | 5.90 ppm |
2017-02-27 | 5810-008-1012 | 5.90 ppm |
2017-03-06 | 5810-008-1050 | 5.60 ppm |
2017-03-13 | 5810-008-1030 | 5.70 ppm |
2017-03-20 | 5810-008-1001 | 5.70 ppm |
2017-03-27 | 5810-008-1026 | 5.60 ppm |
2017-04-04 | 5810-008-1330 | 1.30 ppm |
2017-04-10 | 5810-008-1007 | ND |
2017-04-17 | 5810-008-1153 | ND |
2017-04-24 | 5810-008-0945 | ND |
2017-05-01 | 5810-008-0935 | ND |
2017-05-08 | 5810-008-1013 | ND |
2017-05-15 | 5810-008-1110 | ND |
2017-05-22 | 5810-008-1030 | ND |
2017-05-30 | 5810-008-1011 | ND |
2017-06-05 | 5810-008-0900 | ND |
2017-06-12 | 5810-008-1030 | ND |
2017-06-19 | 5810-008-1037 | ND |
2017-06-26 | 5810-008-0925 | ND |
2017-07-03 | 5810-008-1013 | ND |
2017-07-10 | 5810-008-1030 | ND |
2017-07-17 | 5810-008-1100 | ND |
2017-07-24 | 5810-008-1023 | ND |
2017-07-31 | 5810-008-1009 | ND |
2017-08-07 | 5810-008-1050 | ND |
2017-08-14 | 5810-008-1038 | ND |
2017-08-21 | 5810-008-1315 | ND |
2017-08-28 | 5810-008-0945 | 2.40 ppm |
2017-08-29 | 5810-002-1120 | 12.0 ppm |
2017-09-05 | 5810-008-1021 | 2.40 ppm |
2017-09-11 | 5810-008-1000 | 2.50 ppm |
2017-09-18 | 5810-008-1140 | 2.70 ppm |
2017-09-25 | 5810-008-1027 | 2.80 ppm |
2017-10-02 | 5810-008-0932 | 3.00 ppm |
2017-10-09 | 5810-008-0940 | 3.00 ppm |
2017-10-16 | 5810-008-1036 | 3.00 ppm |
2017-10-23 | 5810-008-0958 | 3.00 ppm |
2017-10-30 | 5810-008-1004 | 3.00 ppm |
2017-11-06 | 5810-008-0956 | 3.00 ppm |
2017-11-13 | 5810-002-1200 | 13.0 ppm |
2017-11-13 | 5810-008-1030 | 3.10 ppm |
2017-11-20 | 5810-008-1000 | 3.10 ppm |
2017-11-27 | 5810-008-0950 | 3.00 ppm |
2017-12-04 | 5810-008-1035 | 4.00 ppm |
2017-12-11 | 5810-008-1118 | 3.50 ppm |
2017-12-18 | 5810-008-1110 | 4.30 ppm |
2017-12-26 | 5810-008-1000 | 4.10 ppm |
2018-01-02 | 5810-008-1018 | 4.10 ppm |
2018-01-08 | 5810-008-0951 | 4.20 ppm |
2018-01-15 | 5810-008-1140 | 4.00 ppm |
2018-01-22 | 5810-008-1133 | 4.10 ppm |
2018-01-29 | 5810-008-1030 | 4.10 ppm |
2018-02-05 | 5810-008-1008 | 4.10 ppm |
2018-02-12 | 5810-002-1159 | 13.0 ppm |
2018-02-12 | 5810-008-1030 | 4.00 ppm |
2018-02-20 | 5810-008-0952 | 3.90 ppm |
2018-02-26 | 5810-008-1023 | 4.20 ppm |
2018-03-05 | 5810-008-0954 | 4.30 ppm |
2018-03-12 | 5810-008-1123 | 3.90 ppm |
2018-03-19 | 5810-008-1052 | 4.10 ppm |
2018-03-26 | 5810-008-1143 | 4.30 ppm |
2018-04-02 | 5810-008-1026 | 3.90 ppm |
2018-04-09 | 5810-008-1029 | 4.20 ppm |
2018-04-16 | 5810-008-1037 | 4.00 ppm |
2018-04-23 | 5810-008-1017 | 3.80 ppm |
2018-04-30 | 5810-008-1045 | 3.70 ppm |
2018-05-07 | 5810-008-1002 | 3.60 ppm |
2018-05-14 | 5810-008-1010 | 3.90 ppm |
2018-05-21 | 5810-008-1030 | 4.00 ppm |
2018-05-29 | 5810-008-1020 | 3.80 ppm |
2018-06-04 | 5810-008-1100 | 3.50 ppm |
2018-06-11 | 5810-008-1010 | 3.50 ppm |
2018-06-14 | 5810-002-1220 | 13.0 ppm |
2018-06-18 | 5810-008-1048 | 3.50 ppm |
2018-06-25 | 5810-008-1033 | 3.40 ppm |
2018-07-02 | 5810-008-1127 | 4.00 ppm |
2018-07-09 | 5810-008-1057 | 3.50 ppm |
2018-07-16 | 5810-008-1025 | 3.20 ppm |
2018-07-23 | 5810-008-1015 | 3.10 ppm |
2018-07-30 | 5810-008-1017 | 3.60 ppm |
2018-08-06 | 5810-002-1229 | 13.0 ppm |
2018-08-06 | 5810-008-1023 | 3.40 ppm |
2018-08-13 | 5810-008-1110 | 3.40 ppm |
2018-08-20 | 5810-008-1013 | 3.40 ppm |
2018-08-27 | 5810-008-1108 | 3.60 ppm |
2018-09-04 | 5810-008-1105 | 3.60 ppm |
2018-09-10 | 5810-008-1004 | 2.50 ppm |
2018-09-17 | 5810-008-1014 | 3.70 ppm |
2018-09-25 | 5810-008-1100 | 2.70 ppm |
2018-10-01 | 5810-008-1040 | 3.70 ppm |
2018-10-08 | 5810-008-1025 | 3.70 ppm |
2018-10-15 | 5810-008-1005 | 4.10 ppm |
2018-10-22 | 5810-008-1003 | 3.80 ppm |
2018-10-29 | 5810-008-1124 | 3.60 ppm |
2018-11-05 | 5810-008-1013 | 3.60 ppm |
2018-11-13 | 5810-008-1058 | 3.70 ppm |
2018-11-15 | 5810-002-1200 | 13.0 ppm |
2018-11-19 | 5810-008-1022 | 3.50 ppm |
2018-11-26 | 5810-008-1124 | 3.80 ppm |
2018-12-03 | 5810-008-1041 | 4.00 ppm |
2018-12-10 | 5810-008-1028 | 3.90 ppm |
2018-12-17 | 5810-008-1109 | 4.00 ppm |
2018-12-26 | 5810-008-0934 | 3.80 ppm |
2019-01-02 | 5810-008-1050 | 3.80 ppm |
2019-01-07 | 5810-008-1020 | 3.90 ppm |
2019-01-14 | 5810-008-1103 | 3.80 ppm |
2019-01-22 | 5810-008-1016 | 3.70 ppm |
2019-01-28 | 5810-008-0945 | 3.80 ppm |
2019-02-04 | 5810-002-1215 | 13.0 ppm |
2019-02-04 | 5810-008-1112 | 4.10 ppm |
2019-02-11 | 5810-008-1027 | 3.70 ppm |
2019-02-19 | 5810-008-0935 | 4.00 ppm |
2019-02-25 | 5810-008-1026 | 3.80 ppm |
2019-03-04 | 5810-008-1029 | 4.20 ppm |
2019-03-11 | 5810-008-1035 | 3.90 ppm |
2019-03-18 | 5810-008-1030 | 4.20 ppm |
2019-03-25 | 5810-008-1039 | 3.90 ppm |
2019-04-01 | 5810-008-1019 | 3.90 ppm |
2019-04-08 | 5810-008-1012 | 3.80 ppm |
2019-04-15 | 5810-008-1110 | 2.80 ppm |
2019-04-22 | 5810-008-1035 | 3.80 ppm |
2019-04-29 | 5810-008-1111 | 5.90 ppm |
2019-05-06 | 5810-002-1231 | 14.0 ppm |
2019-05-06 | 5810-008-1050 | 6.00 ppm |
2019-05-13 | 5810-008-1048 | 3.70 ppm |
2019-05-20 | 5810-008-1104 | 3.90 ppm |
2019-05-28 | 5810-008-1015 | 3.80 ppm |
2019-06-03 | 5810-008-1058 | 3.70 ppm |
2019-06-10 | 5810-008-1038 | 3.40 ppm |
2019-06-17 | 5810-008-1039 | 2.60 ppm |
2019-06-24 | 5810-008-1045 | 2.70 ppm |
2019-07-01 | 5810-008-1013 | 2.60 ppm |
2019-07-08 | 5810-008-1136 | 3.10 ppm |
2019-07-15 | 5810-008-1023 | 3.90 ppm |
2019-07-22 | 5810-008-1103 | 2.60 ppm |
2019-07-29 | 5810-008-1023 | 2.50 ppm |
2019-08-05 | 5810-008-1047 | 4.00 ppm |
2019-08-12 | 5810-008-1024 | 2.60 ppm |
2019-08-19 | 5810-008-1009 | 2.40 ppm |
2019-08-26 | 5810-002-1333 | 13.0 ppm |
2019-09-03 | 5810-008-1001 | 2.90 ppm |
2019-09-09 | 5810-008-1020 | 2.80 ppm |
2019-09-16 | 5810-008-1141 | 2.90 ppm |
2019-09-23 | 5810-008-0954 | 4.30 ppm |
2019-09-30 | 5810-008-1048 | 3.30 ppm |
2019-10-07 | 5810-008-1015 | 4.40 ppm |
2019-10-14 | 5810-008-1136 | 4.10 ppm |
2019-10-21 | 5810-008-1010 | 3.90 ppm |
2019-10-28 | 5810-008-1032 | 3.10 ppm |
2019-11-04 | 5810-008-0954 | 3.50 ppm |
2019-11-12 | 5810-008-1030 | 4.30 ppm |
2019-11-18 | 5810-008-1000 | 4.30 ppm |
2019-11-21 | 5810-002-1102 | 13.0 ppm |
2019-11-25 | 5810-008-1020 | 4.20 ppm |
2019-12-02 | 5810-008-1025 | 4.10 ppm |
2019-12-09 | 5810-008-1030 | 4.60 ppm |
2019-12-16 | 5810-008-1127 | 4.50 ppm |
2019-12-23 | 5810-008-1005 | 4.30 ppm |
2019-12-30 | 5810-008-1012 | 4.50 ppm |