Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrate

Soquel Creek Water 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.

MORE ABOUT THIS CONTAMINANT

 

176

Samples

0

Samples exceeding legal limit (MCL)

105

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.27 ppm2513ND - 5.20 ppm
20151.38 ppm3119ND - 5.20 ppm
20161.38 ppm3929ND - 4.60 ppm
20171.94 ppm4633ND - 5.00 ppm
20180.744 ppm165ND - 4.50 ppm
20191.13 ppm198ND - 5.00 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
2014-03-191644-003-0839ND
2014-03-191644-004-09573.61 ppm
2014-03-191644-005-08223.16 ppm
2014-03-191644-036-07531.56 ppm
2014-03-191644-049-09130.142 ppm
2014-05-211644-004-08204.07 ppm
2014-08-051644-004-07544.52 ppm
2014-08-132385-003-0930ND
2014-08-132385-003-0930ND
2014-09-221644-003-1040ND
2014-09-221644-004-09503.39 ppm
2014-09-221644-005-10151.94 ppm
2014-09-221644-036-13401.49 ppm
2014-09-231644-049-09350.0971 ppm
2014-10-141644-047-0917ND
2014-10-151644-002-0903ND
2014-10-151644-007-1440ND
2014-10-151644-034-0913ND
2014-10-161644-012-1330ND
2014-10-161644-022-1055ND
2014-10-161644-037-1122ND
2014-11-171644-052-12131.22 ppm
2014-11-241644-004-11225.20 ppm
2014-12-021644-052-12001.38 ppm
2014-12-031644-054-1055ND
2015-01-071644-052-11001.56 ppm
2015-02-041644-052-15251.49 ppm
2015-02-125806-054-0911ND
2015-02-171644-004-14204.97 ppm
2015-03-021644-052-11171.29 ppm
2015-04-061644-052-12121.24 ppm
2015-04-075806-014-1505ND
2015-05-071644-004-09443.16 ppm
2015-05-071644-052-10111.22 ppm
2015-06-011644-052-08201.49 ppm
2015-07-011644-052-08231.38 ppm
2015-08-051644-052-08411.31 ppm
2015-08-111644-004-07475.20 ppm
2015-09-081644-052-11592.71 ppm
2015-09-211644-004-09353.39 ppm
2015-09-221644-003-1505ND
2015-09-221644-005-14073.16 ppm
2015-09-221644-049-1433ND
2015-10-061644-052-14061.94 ppm
2015-10-151644-037-1220ND
2015-10-151644-047-1440ND
2015-10-191644-014-1342ND
2015-10-201644-054-1140ND
2015-10-211644-002-1330ND
2015-10-211644-034-1355ND
2015-10-271644-007-0947ND
2015-10-271644-012-0919ND
2015-11-051644-036-13401.40 ppm
2015-11-101644-053-14091.40 ppm
2015-11-241644-004-10523.16 ppm
2015-12-021644-052-13101.30 ppm
2016-01-131644-052-09361.30 ppm
2016-01-261644-002-1141ND
2016-02-031644-052-11383.00 ppm
2016-02-161644-004-14194.60 ppm
2016-03-021644-052-12461.50 ppm
2016-04-051644-052-14181.40 ppm
2016-05-041644-052-08041.40 ppm
2016-05-181644-004-10123.40 ppm
2016-06-021644-052-11511.30 ppm
2016-06-301644-022-1215ND
2016-07-061644-052-14191.30 ppm
2016-08-031644-052-14521.40 ppm
2016-09-061644-052-11401.60 ppm
2016-09-191644-049-1105ND
2016-09-201644-004-08283.80 ppm
2016-09-201644-005-08482.10 ppm
2016-09-201644-036-09021.60 ppm
2016-09-201644-052-11501.70 ppm
2016-09-201644-053-11582.30 ppm
2016-09-272385-052-13221.50 ppm
2016-10-041644-052-13391.70 ppm
2016-10-111644-052-14281.60 ppm
2016-10-181644-007-1120ND
2016-10-181644-037-1230ND
2016-10-181644-052-10141.60 ppm
2016-10-191644-012-1004ND
2016-10-191644-022-1323ND
2016-10-201644-014-09200.160 ppm
2016-10-201644-047-1428ND
2016-10-261644-034-1305ND
2016-10-261644-052-11451.70 ppm
2016-10-271644-054-1041ND
2016-11-011644-052-14451.40 ppm
2016-11-081644-052-10351.30 ppm
2016-11-151644-052-13471.40 ppm
2016-11-169576-052-14231.50 ppm
2016-11-171644-004-10383.20 ppm
2016-11-221644-052-12551.60 ppm
2016-11-281644-052-13311.50 ppm
2017-01-031644-052-11291.40 ppm
2017-01-261644-005-11482.00 ppm
2017-01-261644-058-12372.00 ppm
2017-02-021644-005-09401.90 ppm
2017-02-021644-058-10191.90 ppm
2017-02-081644-052-14201.60 ppm
2017-02-141644-004-10224.80 ppm
2017-02-161644-013-1450ND
2017-03-091644-052-13171.40 ppm
2017-03-291644-004-16023.90 ppm
2017-03-291644-005-15433.10 ppm
2017-03-291644-036-15201.50 ppm
2017-03-291644-049-1428ND
2017-04-061644-052-11441.40 ppm
2017-05-091644-052-11111.40 ppm
2017-05-161644-013-1425ND
2017-05-241644-004-09321.80 ppm
2017-05-241644-004-09374.90 ppm
2017-05-241644-004-09474.90 ppm
2017-05-241644-004-10024.90 ppm
2017-05-241644-004-10324.90 ppm
2017-05-241644-004-11325.00 ppm
2017-05-241644-004-13325.00 ppm
2017-05-241644-004-15325.00 ppm
2017-06-011644-052-12341.30 ppm
2017-07-121644-052-15061.60 ppm
2017-08-081644-052-13061.70 ppm
2017-08-221644-004-10504.70 ppm
2017-09-051644-052-11141.40 ppm
2017-09-131644-005-12341.90 ppm
2017-09-131644-036-14071.40 ppm
2017-09-191644-049-1109ND
2017-09-191644-053-10491.60 ppm
2017-10-031644-054-1340ND
2017-10-041644-037-1155ND
2017-10-051644-034-1207ND
2017-10-051644-047-1102ND
2017-10-101644-022-1311ND
2017-10-111644-052-14221.30 ppm
2017-10-121644-012-0733ND
2017-10-121644-014-1335ND
2017-10-241644-007-1033ND
2017-10-241644-013-1106ND
2017-11-021644-052-13581.70 ppm
2017-12-051644-052-14161.60 ppm
2017-12-201644-004-15074.20 ppm
2018-03-061644-005-08282.70 ppm
2018-03-061644-049-1037ND
2018-03-071644-036-11311.60 ppm
2018-09-041644-054-1127ND
2018-09-195810-005-09441.80 ppm
2018-09-195810-036-09291.30 ppm
2018-09-195810-049-1433ND
2018-10-155810-034-1008ND
2018-10-165810-007-1002ND
2018-10-165810-012-0903ND
2018-10-165810-013-0846ND
2018-10-165810-037-1102ND
2018-10-175810-014-1355ND
2018-10-175810-022-1205ND
2018-10-175810-047-1234ND
2018-10-315810-004-13534.50 ppm
2019-03-055810-004-11514.60 ppm
2019-03-212385-005-10082.60 ppm
2019-03-212385-036-10561.50 ppm
2019-03-282385-049-1414ND
2019-06-245810-004-11154.30 ppm
2019-07-315810-054-1030ND
2019-09-242385-049-0928ND
2019-09-252385-005-08322.00 ppm
2019-09-252385-036-08551.40 ppm
2019-10-152385-013-1315ND
2019-10-152385-022-1040ND
2019-10-152385-047-0845ND
2019-10-162385-037-0915ND
2019-10-212385-014-1010ND
2019-10-232385-007-11250.1000 ppm
2019-10-232385-012-1005ND
2019-10-232385-034-1050ND
2019-12-102385-004-14195.00 ppm
2019-12-305810-059-1137ND