Nitrate
White Fence Farms Mutual Water Company No. 3
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 | 6.67 ppm | 43 | 43 | 1.87 ppm - 16.7 ppm |
2015 | 7.37 ppm | 46 | 46 | 3.84 ppm - 17.4 ppm |
2016 | 7.59 ppm | 45 | 45 | 4.80 ppm - 18.0 ppm |
2017 | 6.19 ppm | 49 | 49 | 4.80 ppm - 6.60 ppm |
2018 | 6.18 ppm | 50 | 50 | 4.60 ppm - 6.70 ppm |
2019 | 6.18 ppm | 36 | 35 | ND - 6.90 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 |
---|---|---|
2014-02-11 | 3761-002-1243 | 15.6 ppm |
2014-02-11 | 3761-003-1230 | 3.84 ppm |
2014-03-10 | 3761-002-0714 | 15.1 ppm |
2014-03-10 | 3761-003-0705 | 4.74 ppm |
2014-03-10 | 3761-004-0720 | 1.87 ppm |
2014-04-08 | 3761-002-1242 | 15.4 ppm |
2014-04-08 | 3761-003-1303 | 3.84 ppm |
2014-04-15 | 3761-003-1215 | 5.42 ppm |
2014-04-22 | 3761-003-1209 | 4.07 ppm |
2014-04-29 | 3761-003-1156 | 4.29 ppm |
2014-05-06 | 3761-003-1233 | 4.29 ppm |
2014-05-13 | 3761-002-1300 | 14.5 ppm |
2014-05-13 | 3761-003-1219 | 4.07 ppm |
2014-05-20 | 3761-003-1158 | 3.84 ppm |
2014-05-27 | 3761-003-1208 | 3.84 ppm |
2014-06-03 | 3761-003-1312 | 5.65 ppm |
2014-06-10 | 3761-003-1300 | 3.61 ppm |
2014-06-17 | 3761-003-1230 | 4.07 ppm |
2014-06-24 | 3761-003-1201 | 4.07 ppm |
2014-07-01 | 3761-003-1137 | 4.07 ppm |
2014-07-15 | 3761-002-1150 | 16.0 ppm |
2014-07-22 | 3761-002-1140 | 16.3 ppm |
2014-08-05 | 3761-003-1238 | 4.97 ppm |
2014-08-12 | 3761-002-1152 | 15.8 ppm |
2014-08-12 | 3761-003-1221 | 3.61 ppm |
2014-08-19 | 3761-003-1203 | 4.07 ppm |
2014-08-26 | 3761-003-1130 | 4.29 ppm |
2014-09-02 | 3761-002-1232 | 16.7 ppm |
2014-09-02 | 3761-003-1215 | 5.20 ppm |
2014-09-09 | 3761-003-1341 | 4.29 ppm |
2014-09-16 | 3761-003-1203 | 4.07 ppm |
2014-09-23 | 3761-003-1202 | 4.52 ppm |
2014-09-30 | 3761-003-1143 | 4.07 ppm |
2014-10-07 | 3761-003-1240 | 4.29 ppm |
2014-10-14 | 3761-003-1239 | 4.07 ppm |
2014-11-18 | 3761-002-1145 | 16.0 ppm |
2014-11-18 | 3761-003-1214 | 4.97 ppm |
2014-11-25 | 3761-003-1400 | 4.29 ppm |
2014-12-02 | 3761-003-1100 | 4.97 ppm |
2014-12-09 | 3761-003-1257 | 4.74 ppm |
2014-12-16 | 3761-003-1245 | 4.52 ppm |
2014-12-23 | 3761-003-1150 | 4.74 ppm |
2014-12-30 | 3761-003-1146 | 4.29 ppm |
2015-01-06 | 3761-003-1235 | 4.52 ppm |
2015-01-13 | 3761-003-1126 | 4.52 ppm |
2015-01-27 | 3761-002-1125 | 16.5 ppm |
2015-01-27 | 3761-003-1210 | 4.07 ppm |
2015-02-03 | 3761-003-1242 | 3.84 ppm |
2015-02-10 | 3761-003-1257 | 4.97 ppm |
2015-02-17 | 3761-002-1130 | 16.5 ppm |
2015-02-17 | 3761-003-1158 | 4.29 ppm |
2015-02-24 | 3761-003-1208 | 5.65 ppm |
2015-03-03 | 3761-003-1240 | 4.29 ppm |
2015-03-10 | 3761-003-1240 | 4.29 ppm |
2015-03-17 | 3761-003-1149 | 4.29 ppm |
2015-03-24 | 3761-003-1144 | 4.29 ppm |
2015-03-31 | 3761-002-1157 | 16.7 ppm |
2015-03-31 | 3761-003-1138 | 4.29 ppm |
2015-04-07 | 3761-003-1239 | 4.97 ppm |
2015-04-14 | 3761-003-1244 | 4.29 ppm |
2015-04-21 | 3761-003-1202 | 4.74 ppm |
2015-04-28 | 3761-003-1229 | 4.52 ppm |
2015-05-12 | 3761-003-1239 | 4.52 ppm |
2015-06-02 | 3761-002-1040 | 16.9 ppm |
2015-07-21 | 3761-003-1157 | 4.29 ppm |
2015-07-28 | 3761-003-1159 | 6.55 ppm |
2015-09-01 | 3761-002-1255 | 17.2 ppm |
2015-09-01 | 3761-003-1240 | 5.87 ppm |
2015-09-08 | 3761-003-1241 | 5.20 ppm |
2015-09-29 | 3761-003-1235 | 6.33 ppm |
2015-10-06 | 3761-003-1249 | 7.68 ppm |
2015-10-13 | 3761-003-1235 | 6.78 ppm |
2015-10-20 | 3761-003-1211 | 8.13 ppm |
2015-10-27 | 3761-003-1227 | 4.97 ppm |
2015-11-03 | 3761-003-1254 | 4.74 ppm |
2015-11-10 | 3761-003-1237 | 4.52 ppm |
2015-11-17 | 3761-003-1157 | 6.10 ppm |
2015-11-24 | 3761-003-1230 | 6.40 ppm |
2015-11-24 | 3761-003-1230 | 6.33 ppm |
2015-12-01 | 3761-002-1300 | 17.0 ppm |
2015-12-01 | 3761-002-1300 | 17.4 ppm |
2015-12-01 | 3761-003-1240 | 7.60 ppm |
2015-12-01 | 3761-003-1240 | 7.68 ppm |
2015-12-08 | 3761-003-1227 | 7.50 ppm |
2015-12-08 | 3761-003-1227 | 7.45 ppm |
2015-12-15 | 3761-003-1140 | 8.00 ppm |
2015-12-15 | 3761-003-1140 | 7.91 ppm |
2015-12-22 | 3761-003-1241 | 7.30 ppm |
2015-12-29 | 3761-003-1232 | 7.20 ppm |
2016-01-05 | 3761-003-1229 | 7.60 ppm |
2016-01-12 | 3761-003-1232 | 7.40 ppm |
2016-01-19 | 3761-003-1227 | 6.90 ppm |
2016-01-26 | 3761-003-1240 | 7.20 ppm |
2016-02-02 | 3761-003-1255 | 6.80 ppm |
2016-02-09 | 3761-003-1240 | 7.30 ppm |
2016-02-16 | 3761-003-1245 | 7.40 ppm |
2016-02-23 | 3761-003-1230 | 7.50 ppm |
2016-03-01 | 3761-003-1140 | 7.90 ppm |
2016-03-08 | 3761-003-1332 | 7.30 ppm |
2016-03-15 | 3761-002-1250 | 18.0 ppm |
2016-03-15 | 3761-003-1229 | 7.10 ppm |
2016-03-22 | 3761-003-1132 | 7.40 ppm |
2016-03-29 | 3761-003-1206 | 7.00 ppm |
2016-04-05 | 3761-003-1243 | 7.10 ppm |
2016-04-26 | 3761-003-1230 | 7.00 ppm |
2016-05-03 | 3761-003-1250 | 5.80 ppm |
2016-05-10 | 3761-003-1247 | 6.30 ppm |
2016-05-17 | 3761-003-1233 | 7.20 ppm |
2016-05-24 | 3761-003-1235 | 6.70 ppm |
2016-05-31 | 3761-003-1130 | 7.30 ppm |
2016-06-14 | 3761-002-1350 | 18.0 ppm |
2016-06-14 | 3761-003-1319 | 6.80 ppm |
2016-06-21 | 3761-003-1200 | 6.20 ppm |
2016-06-28 | 3761-003-1337 | 5.30 ppm |
2016-07-05 | 3761-003-1257 | 5.90 ppm |
2016-07-12 | 3761-003-1230 | 7.10 ppm |
2016-09-06 | 3761-003-1258 | 6.60 ppm |
2016-09-13 | 3761-002-1327 | 18.0 ppm |
2016-09-13 | 3761-003-1253 | 6.20 ppm |
2016-09-20 | 3761-003-1252 | 6.10 ppm |
2016-09-27 | 3761-003-1156 | 6.70 ppm |
2016-10-04 | 3761-003-1252 | 5.80 ppm |
2016-10-11 | 3761-003-1300 | 5.90 ppm |
2016-10-18 | 3761-003-1212 | 4.80 ppm |
2016-10-25 | 3761-003-1210 | 5.30 ppm |
2016-11-01 | 3761-003-1241 | 6.60 ppm |
2016-11-08 | 3761-003-1242 | 5.90 ppm |
2016-11-22 | 3761-003-1157 | 6.00 ppm |
2016-11-29 | 3761-003-1219 | 6.30 ppm |
2016-12-06 | 3761-003-1256 | 6.30 ppm |
2016-12-13 | 3761-002-1321 | 17.0 ppm |
2016-12-13 | 3761-003-1240 | 5.70 ppm |
2016-12-20 | 3761-003-1226 | 6.20 ppm |
2016-12-27 | 3761-003-1225 | 6.50 ppm |
2017-01-03 | 3761-003-1246 | 5.80 ppm |
2017-01-17 | 3761-003-1225 | 6.10 ppm |
2017-01-24 | 3761-003-1200 | 6.30 ppm |
2017-01-31 | 3761-003-1205 | 6.30 ppm |
2017-02-07 | 3761-003-1258 | 6.30 ppm |
2017-02-14 | 3761-003-1235 | 6.20 ppm |
2017-02-21 | 3761-003-1207 | 6.40 ppm |
2017-02-28 | 3761-003-1210 | 6.20 ppm |
2017-03-07 | 3761-003-1250 | 6.40 ppm |
2017-03-14 | 3761-003-1245 | 6.40 ppm |
2017-03-21 | 3761-003-1215 | 6.30 ppm |
2017-03-28 | 3761-003-1240 | 6.60 ppm |
2017-04-04 | 3761-003-1247 | 6.30 ppm |
2017-04-11 | 3761-003-1307 | 5.90 ppm |
2017-04-18 | 3761-003-1215 | 6.30 ppm |
2017-04-25 | 3761-003-1227 | 6.20 ppm |
2017-05-02 | 3761-003-1250 | 6.50 ppm |
2017-05-09 | 3761-003-1253 | 6.50 ppm |
2017-05-16 | 3761-003-1258 | 6.40 ppm |
2017-05-23 | 3761-003-1130 | 6.50 ppm |
2017-05-30 | 3761-003-1246 | 6.40 ppm |
2017-06-06 | 3761-003-1253 | 6.30 ppm |
2017-06-13 | 3761-003-1330 | 6.10 ppm |
2017-06-20 | 3761-003-1118 | 6.20 ppm |
2017-06-27 | 3761-003-1200 | 5.90 ppm |
2017-07-05 | 3761-003-1255 | 5.90 ppm |
2017-07-18 | 3761-003-1427 | 5.90 ppm |
2017-07-25 | 3761-003-1121 | 6.30 ppm |
2017-08-01 | 3761-003-1122 | 6.30 ppm |
2017-08-08 | 3761-003-1115 | 4.80 ppm |
2017-08-15 | 3761-003-1126 | 6.30 ppm |
2017-08-22 | 3761-003-1140 | 6.10 ppm |
2017-08-29 | 3761-003-1144 | 6.40 ppm |
2017-09-05 | 3761-003-1121 | 6.40 ppm |
2017-09-12 | 3761-003-1230 | 6.10 ppm |
2017-09-19 | 3761-003-1229 | 6.00 ppm |
2017-09-26 | 3761-003-1250 | 5.80 ppm |
2017-10-03 | 3761-003-1104 | 6.10 ppm |
2017-10-10 | 3761-003-1246 | 5.90 ppm |
2017-10-17 | 3761-003-1206 | 6.40 ppm |
2017-10-24 | 3761-003-1149 | 6.40 ppm |
2017-10-31 | 3761-003-1158 | 6.00 ppm |
2017-11-07 | 3761-003-1228 | 6.20 ppm |
2017-11-14 | 3761-003-1214 | 6.30 ppm |
2017-11-28 | 3761-003-1150 | 6.20 ppm |
2017-12-05 | 3761-003-1124 | 6.20 ppm |
2017-12-12 | 3761-003-1050 | 6.10 ppm |
2017-12-19 | 3761-003-1150 | 6.20 ppm |
2017-12-26 | 3761-003-1154 | 6.20 ppm |
2018-01-02 | 3761-003-1220 | 6.40 ppm |
2018-01-09 | 3761-003-1206 | 6.20 ppm |
2018-01-16 | 3761-003-1147 | 6.30 ppm |
2018-01-23 | 3761-003-1128 | 6.40 ppm |
2018-01-30 | 3761-003-1110 | 6.30 ppm |
2018-02-06 | 3761-003-1122 | 6.00 ppm |
2018-02-13 | 3761-003-1127 | 6.20 ppm |
2018-02-20 | 3761-003-1124 | 6.00 ppm |
2018-02-27 | 3761-003-1139 | 6.00 ppm |
2018-03-06 | 3761-003-1221 | 6.30 ppm |
2018-03-13 | 3761-003-1154 | 6.10 ppm |
2018-03-20 | 3761-003-1230 | 6.20 ppm |
2018-03-27 | 3761-003-1207 | 6.00 ppm |
2018-04-03 | 3761-003-1111 | 6.20 ppm |
2018-04-10 | 3761-003-1122 | 6.00 ppm |
2018-04-17 | 3761-003-1138 | 6.20 ppm |
2018-04-24 | 3761-003-1130 | 6.20 ppm |
2018-05-01 | 3761-003-1119 | 6.10 ppm |
2018-05-08 | 3761-003-1110 | 6.40 ppm |
2018-05-15 | 3761-003-1158 | 6.20 ppm |
2018-05-22 | 3761-003-1109 | 6.20 ppm |
2018-05-29 | 3761-003-1152 | 6.30 ppm |
2018-06-05 | 3761-003-1120 | 6.30 ppm |
2018-06-12 | 3761-003-1145 | 6.40 ppm |
2018-06-19 | 3761-003-1123 | 6.70 ppm |
2018-06-26 | 3761-003-1200 | 6.10 ppm |
2018-07-03 | 3761-003-1100 | 6.30 ppm |
2018-07-10 | 3761-003-1136 | 5.90 ppm |
2018-07-17 | 3761-003-1154 | 6.10 ppm |
2018-07-24 | 3761-003-1105 | 6.20 ppm |
2018-07-31 | 3761-003-1059 | 6.10 ppm |
2018-08-07 | 3761-003-1123 | 6.00 ppm |
2018-08-14 | 3761-003-1124 | 6.10 ppm |
2018-08-21 | 3761-003-1130 | 6.60 ppm |
2018-08-28 | 3761-003-1210 | 6.20 ppm |
2018-09-04 | 3761-003-1202 | 6.10 ppm |
2018-09-11 | 3761-003-1223 | 6.40 ppm |
2018-09-18 | 3761-003-1208 | 6.20 ppm |
2018-09-25 | 3761-003-1154 | 6.10 ppm |
2018-10-02 | 3761-003-1125 | 6.10 ppm |
2018-10-16 | 3761-003-1152 | 6.20 ppm |
2018-10-23 | 3761-003-1122 | 6.40 ppm |
2018-10-30 | 3761-003-1115 | 6.30 ppm |
2018-11-13 | 3761-003-1142 | 6.20 ppm |
2018-11-20 | 3761-003-1159 | 6.10 ppm |
2018-11-27 | 3761-003-1158 | 6.10 ppm |
2018-12-04 | 3761-003-1125 | 6.10 ppm |
2018-12-11 | 3761-003-1118 | 6.20 ppm |
2018-12-18 | 3761-003-1211 | 6.60 ppm |
2018-12-26 | 3761-003-1104 | 4.60 ppm |
2019-01-02 | 3761-003-1142 | 6.40 ppm |
2019-01-08 | 3761-003-1134 | 6.10 ppm |
2019-01-15 | 3761-003-1140 | 6.10 ppm |
2019-01-22 | 3761-003-1140 | 6.30 ppm |
2019-01-29 | 3761-003-1136 | 6.40 ppm |
2019-02-05 | 3761-003-1213 | 6.60 ppm |
2019-02-12 | 3761-003-1145 | 6.60 ppm |
2019-02-19 | 3761-003-1143 | 6.40 ppm |
2019-02-26 | 3761-003-1126 | 6.50 ppm |
2019-03-05 | 3761-003-1120 | 6.50 ppm |
2019-03-12 | 3761-003-1159 | 6.60 ppm |
2019-03-19 | 3761-003-1108 | 6.60 ppm |
2019-03-26 | 3761-003-1132 | 6.40 ppm |
2019-06-25 | 3761-003-1153 | ND |
2019-07-16 | 3761-003-1151 | 6.00 ppm |
2019-07-23 | 3761-003-1133 | 5.90 ppm |
2019-07-30 | 3761-003-1131 | 6.10 ppm |
2019-08-06 | 3761-003-1206 | 6.30 ppm |
2019-08-13 | 3761-003-1141 | 5.90 ppm |
2019-08-27 | 3761-003-1142 | 5.80 ppm |
2019-09-03 | 3761-003-1054 | 5.90 ppm |
2019-09-10 | 3761-003-1224 | 6.20 ppm |
2019-09-17 | 3761-003-1148 | 6.40 ppm |
2019-10-01 | 3761-003-1157 | 6.20 ppm |
2019-10-08 | 3761-003-1149 | 6.40 ppm |
2019-10-15 | 3761-003-1203 | 6.20 ppm |
2019-10-22 | 3761-003-1118 | 6.30 ppm |
2019-10-29 | 3761-003-1141 | 6.10 ppm |
2019-11-05 | 3761-003-1152 | 6.20 ppm |
2019-11-12 | 3761-003-1138 | 6.60 ppm |
2019-11-19 | 3761-003-1106 | 6.70 ppm |
2019-11-26 | 3761-003-1153 | 6.80 ppm |
2019-12-03 | 3761-003-1214 | 6.60 ppm |
2019-12-10 | 3761-003-1209 | 6.80 ppm |
2019-12-17 | 3761-003-1148 | 6.90 ppm |
2019-12-24 | 3761-003-1138 | 6.60 ppm |