Nitrate
Manhasset Lakeville WD
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 |
---|---|---|---|---|
2014 | 4.87 ppm | 63 | 63 | 0.270 ppm - 7.44 ppm |
2015 | 4.83 ppm | 37 | 37 | 0.740 ppm - 7.45 ppm |
2016 | 3.73 ppm | 48 | 48 | 0.000200 ppm - 8.18 ppm |
2017 | 3.92 ppm | 63 | 62 | ND - 8.80 ppm |
2018 | 3.30 ppm | 67 | 66 | ND - 6.80 ppm |
2019 | 3.62 ppm | 74 | 74 | 0.00250 ppm - 7.70 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 |
---|---|---|
2014-01-29 | 1401C30-004-POCS | 5.40 ppm |
2014-01-29 | 1401C30-006 | 7.15 ppm |
2014-01-30 | 1401C78-006 | 6.46 ppm |
2014-01-30 | 1401C78-005 | 6.61 ppm |
2014-01-30 | 1401C78-007-POCS | 6.30 ppm |
2014-02-26 | 1402E34-006 | 5.25 ppm |
2014-02-26 | 1402E34-005 | 5.20 ppm |
2014-02-26 | 1402E34-004 | 5.25 ppm |
2014-02-28 | 1402F83-001 | 4.29 ppm |
2014-02-28 | 1402F83-004 | 6.25 ppm |
2014-03-12 | 1403769-001-PRI | 0.310 ppm |
2014-03-13 | 1403877-006 | 5.46 ppm |
2014-03-13 | 1403877-007-POCS | 5.50 ppm |
2014-03-13 | 1403877-005 | 5.48 ppm |
2014-03-24 | 1403G29-001 | 5.03 ppm |
2014-03-24 | 1403G29-003 | 5.61 ppm |
2014-04-01 | 1404065-001-PRI | 0.270 ppm |
2014-04-29 | 1404K80-002 | 5.00 ppm |
2014-04-29 | 1404K80-003 | 5.02 ppm |
2014-04-29 | 1404K80-004-POCS | 5.00 ppm |
2014-05-22 | 1405G40-003 | 5.62 ppm |
2014-05-22 | 1405G40-002-POCS | 3.33 ppm |
2014-05-28 | 1405J57-007-POCS | 5.19 ppm |
2014-05-28 | 1405J57-006 | 5.03 ppm |
2014-05-28 | 1405J57-005 | 5.03 ppm |
2014-06-26 | 1406J68-004-POCS | 5.13 ppm |
2014-06-26 | 1406J68-008 | 5.58 ppm |
2014-06-26 | 1406J68-002 | 5.20 ppm |
2014-06-26 | 1406J68-003 | 5.10 ppm |
2014-06-26 | 1406J68-006 | 3.68 ppm |
2014-07-11 | 1407765-001-PRI | 0.270 ppm |
2014-07-31 | 1407L96-009-POCS | 4.84 ppm |
2014-07-31 | 1407L96-004 | 5.43 ppm |
2014-07-31 | 1407L96-002-POCS | 3.54 ppm |
2014-07-31 | 1407L96-007 | 4.80 ppm |
2014-07-31 | 1407L96-008 | 4.91 ppm |
2014-08-27 | 1408J52-003 | 4.82 ppm |
2014-08-27 | 1408J52-004 | 4.82 ppm |
2014-08-27 | 1408J52-005 | 4.92 ppm |
2014-08-28 | 1408K14-004 | 5.68 ppm |
2014-08-28 | 1408K14-002 | 3.51 ppm |
2014-09-23 | 1409H96-008 | 4.17 ppm |
2014-09-30 | 1409M62-003 | 4.99 ppm |
2014-09-30 | 1409M62-002 | 4.90 ppm |
2014-09-30 | 1409M62-008 | 6.15 ppm |
2014-09-30 | 1409M62-004-POCS | 5.04 ppm |
2014-09-30 | 1409M62-006 | 3.82 ppm |
2014-10-29 | 1410J28-004-POCS | 4.71 ppm |
2014-10-29 | 1410J28-002 | 4.72 ppm |
2014-10-29 | 1410J28-003 | 4.72 ppm |
2014-10-31 | 1410K78-003 | 5.93 ppm |
2014-10-31 | 1410K78-001-POCS | 3.50 ppm |
2014-11-20 | 1411E32-003-PRI | 0.810 ppm |
2014-11-25 | 1411G52-002 | 5.87 ppm |
2014-11-25 | 1411G52-007 | 5.58 ppm |
2014-11-25 | 1411G52-004-POCS | 5.85 ppm |
2014-11-25 | 1411G52-005 | 2.97 ppm |
2014-11-25 | 1411G52-003 | 5.94 ppm |
2014-12-29 | 1412J02-003-PRI | 7.20 ppm |
2014-12-29 | 1412J02-004-PRI | 6.96 ppm |
2014-12-29 | 1412J02-002-PRI | 7.44 ppm |
2014-12-30 | 1412J23-003 | 4.71 ppm |
2014-12-30 | 1412J23-001-PRI | 3.26 ppm |
2015-01-30 | 1501H32-008 | 6.01 ppm |
2015-01-30 | 1501H32-003 | 5.02 ppm |
2015-01-30 | 1501H32-004-POCS | 5.01 ppm |
2015-01-30 | 1501H32-006-POCS | 3.02 ppm |
2015-01-30 | 1501H32-002 | 4.98 ppm |
2015-02-12 | 1502822-006-POCS | 5.02 ppm |
2015-02-12 | 1502822-005 | 4.99 ppm |
2015-02-12 | 1502822-004 | 4.89 ppm |
2015-02-27 | 1502H21-005 | 5.51 ppm |
2015-02-27 | 1502H21-003 | 2.57 ppm |
2015-03-17 | 1503B08-005-PRI | 7.10 ppm |
2015-03-31 | 1503L06-008 | 3.13 ppm |
2015-03-31 | 1503L06-010 | 6.09 ppm |
2015-03-31 | 1503L06-007 | 7.19 ppm |
2015-03-31 | 1503L06-006 | 7.40 ppm |
2015-03-31 | 1503L06-005 | 7.45 ppm |
2015-04-28 | 1504K70-002 | 3.87 ppm |
2015-04-28 | 1504K70-004 | 6.44 ppm |
2015-04-30 | 1504N03-002 | 5.22 ppm |
2015-04-30 | 1504N03-003 | 5.62 ppm |
2015-04-30 | 1504N03-004 | 6.08 ppm |
2015-05-28 | 1505K14-007-POCS | 4.49 ppm |
2015-05-28 | 1505K14-005 | 4.65 ppm |
2015-05-28 | 1505K14-011 | 5.40 ppm |
2015-05-28 | 1505K14-006 | 4.42 ppm |
2015-05-28 | 1505K14-009 | 3.29 ppm |
2015-06-25 | 1506K40-005 | 2.92 ppm |
2015-06-30 | 1506N60-008 | 5.79 ppm |
2015-06-30 | 1506N60-003 | 4.77 ppm |
2015-06-30 | 1506N60-006 | 3.87 ppm |
2015-06-30 | 1506N60-004-POCS | 4.89 ppm |
2015-06-30 | 1506N60-002 | 4.77 ppm |
2015-07-31 | 1507N04-002-POCS | 3.73 ppm |
2015-08-05 | 1508283-004 | 4.76 ppm |
2015-08-25 | 1508182-006 | 0.740 ppm |
2015-09-29 | 1509M28-009-POCS | 4.55 ppm |
2015-10-30 | 1510N51-008 | 3.12 ppm |
2016-01-29 | 1601J79-007 | 3.83 ppm |
2016-01-29 | 1601J79-009 | 3.89 ppm |
2016-01-29 | 1601J79-004 | 5.13 ppm |
2016-01-29 | 1601J79-002 | 2.74 ppm |
2016-02-22 | 1602F37-002 | 0.210 ppm |
2016-02-29 | 1602K24-006 | 4.77 ppm |
2016-02-29 | 1602K24-004 | 2.77 ppm |
2016-03-31 | 1603P71-005 | 2.35 ppm |
2016-03-31 | 1603P71-003 | 2.72 ppm |
2016-04-19 | 1604H74-001 | 4.56 ppm |
2016-04-20 | 1604J63-010 | 0.1000 ppm |
2016-05-10 | 1609L08-003-PRI | 0.780 ppm |
2016-05-19 | 1605I12-008 | 4.18 ppm |
2016-06-23 | 1606N95-009 | 8.18 ppm |
2016-06-23 | 1606N95-005 | 4.06 ppm |
2016-06-24 | 1606P18-007 | 4.88 ppm |
2016-07-06 | 1607416-001 | 5.66 ppm |
2016-07-06 | 1607416-003 | 3.82 ppm |
2016-07-13 | 1607A82-001 | 0.700 ppm |
2016-07-13 | 1607A82-002 | 0.0700 ppm |
2016-07-19 | 4.51 ppm | |
2016-07-20 | 1607H37-005 | 6.45 ppm |
2016-07-20 | 1607H37-001 | 0.000200 ppm |
2016-08-24 | 1608N09-003 | 4.00 ppm |
2016-08-24 | 1608N09-008 | 5.22 ppm |
2016-08-24 | 1608N09-004 | 4.01 ppm |
2016-08-24 | 1608N09-002 | 3.76 ppm |
2016-08-24 | 1608N09-006 | 3.36 ppm |
2016-08-26 | 1608P03-006 | 4.35 ppm |
2016-09-21 | 1609I85-008 | 2.80 ppm |
2016-09-22 | 1609J95-001 | 3.81 ppm |
2016-09-22 | 1609J95-005 | 5.86 ppm |
2016-09-23 | 1609L08-001-PRI | 0.0900 ppm |
2016-09-27 | 1609N63-001-PRI | 5.19 ppm |
2016-09-27 | 1609N63-002 | 5.60 ppm |
2016-10-27 | 703085007 | 5.50 ppm |
2016-10-27 | 703085008-POCS | 5.50 ppm |
2016-10-27 | 703085006 | 5.30 ppm |
2016-10-28 | 703173004 | 4.50 ppm |
2016-10-28 | 703173006 | 2.90 ppm |
2016-11-18 | 704994005 | 4.50 ppm |
2016-11-28 | 705524004 | 5.90 ppm |
2016-11-28 | 705524001 | 2.80 ppm |
2016-12-20 | 707279001 | 0.230 ppm |
2016-12-21 | 707376009 | 5.00 ppm |
2016-12-28 | 707782010 | 4.60 ppm |
2016-12-28 | 707782004 | 5.40 ppm |
2016-12-28 | 707782002-PRI | 2.70 ppm |
2017-01-18 | 709369002 | 2.60 ppm |
2017-01-18 | 709369001 | 2.70 ppm |
2017-01-19 | 709490001 | 0.1000 ppm |
2017-01-20 | 709587005 | 0.210 ppm |
2017-01-20 | 709587002 | 4.60 ppm |
2017-01-23 | 709698006 | 4.00 ppm |
2017-01-30 | 7010155002 | 2.90 ppm |
2017-01-30 | 7010155002-POCS | 2.90 ppm |
2017-01-30 | 7010155005 | 1.10 ppm |
2017-02-24 | 7012029001 | 2.50 ppm |
2017-02-24 | 7012029006 | 5.70 ppm |
2017-02-24 | 7012029007 | 5.90 ppm |
2017-02-24 | 7012029012 | 5.60 ppm |
2017-02-24 | 7012029010 | 2.90 ppm |
2017-02-28 | 7012240007 | 7.50 ppm |
2017-02-28 | 7012240008 | 5.20 ppm |
2017-03-23 | 7014058005 | 2.80 ppm |
2017-03-23 | 7014058002 | 6.00 ppm |
2017-03-24 | 7014138004-POCS | 5.50 ppm |
2017-03-24 | 7014138001 | 2.50 ppm |
2017-03-29 | 7014450005 | 5.30 ppm |
2017-04-26 | 7016965005 | 2.40 ppm |
2017-04-26 | 7016965001 | 0.0940 ppm |
2017-04-27 | 7017092007 | 5.60 ppm |
2017-04-27 | 7017092008 | 5.50 ppm |
2017-04-27 | 7017092006 | 5.40 ppm |
2017-04-28 | 707216008 | 8.10 ppm |
2017-04-28 | 7017216009 | 5.00 ppm |
2017-04-28 | 7017216004 | 6.30 ppm |
2017-04-28 | 7017216002 | 2.80 ppm |
2017-05-23 | 7019346001 | 2.30 ppm |
2017-05-24 | 7019556001 | 3.60 ppm |
2017-05-24 | 7019556004 | 4.40 ppm |
2017-05-26 | 7019720004 | 4.30 ppm |
2017-06-28 | 7022673002 | 4.60 ppm |
2017-06-29 | 7022859004 | 7.00 ppm |
2017-06-29 | 7022859005 | 4.50 ppm |
2017-06-30 | 7022895002 | 3.50 ppm |
2017-06-30 | 7022895004 | 5.20 ppm |
2017-07-17 | 7024312001-PRI | 2.50 ppm |
2017-07-18 | 7024470001-PRI | 0.1000 ppm |
2017-07-19 | 7024686001 | 2.30 ppm |
2017-07-21 | 7024932005 | 4.80 ppm |
2017-07-25 | 7025172001-PRI | 0.670 ppm |
2017-07-27 | 7025461008 | 5.80 ppm |
2017-08-31 | 7028632004 | 4.60 ppm |
2017-08-31 | 7028632006 | 3.90 ppm |
2017-08-31 | 7028632008 | 5.40 ppm |
2017-08-31 | 7028632003 | 4.50 ppm |
2017-08-31 | 7028632002 | 4.60 ppm |
2017-09-27 | 7031210001 | 2.40 ppm |
2017-09-28 | 7031342005 | ND |
2017-09-28 | 7031342001 | 4.30 ppm |
2017-10-19 | 7033406001-POCS | 0.200 ppm |
2017-10-26 | 7034069006-POCS | 4.50 ppm |
2017-10-31 | 7034362004-POCS | 5.20 ppm |
2017-10-31 | 7034362002-POCS | 2.90 ppm |
2017-11-27 | 7036539006 | 5.80 ppm |
2017-11-27 | 7036539003 | 3.10 ppm |
2017-11-28 | 7036659001 | 5.50 ppm |
2017-11-28 | 7036659005 | 8.80 ppm |
2017-12-27 | 7039121004 | 4.30 ppm |
2017-12-27 | 7039121002 | 2.00 ppm |
2018-01-24 | 7041268005-POCS | 0.1000 ppm |
2018-01-24 | 7041268003-POCS | 3.30 ppm |
2018-01-25 | 7041373007 | 4.40 ppm |
2018-01-25 | 7041373004-POCS | 2.90 ppm |
2018-01-25 | 7041373002-POCS | 4.90 ppm |
2018-01-26 | 7041476001-POCS | 0.780 ppm |
2018-01-26 | 7041476002-POCS | 0.200 ppm |
2018-02-09 | 7042538002_POCS | 2.40 ppm |
2018-02-21 | 7043552006 | 3.90 ppm |
2018-02-21 | 7043552007-POCS | 4.00 ppm |
2018-02-21 | 7043552005 | 4.10 ppm |
2018-02-27 | 7043966002 | 2.10 ppm |
2018-02-27 | 7043966004 | 4.70 ppm |
2018-03-27 | 7046393004-POCS | 4.30 ppm |
2018-03-28 | 7046514001 | 2.00 ppm |
2018-03-29 | 7046718004 | 4.40 ppm |
2018-03-29 | 7046718003 | 2.20 ppm |
2018-04-19 | 7048971003 | 6.30 ppm |
2018-04-19 | 7048971002 | 5.70 ppm |
2018-04-19 | 7048971004 | 6.30 ppm |
2018-04-26 | 7049664004 | 6.30 ppm |
2018-04-26 | 7049664002-POCS | 3.10 ppm |
2018-05-22 | 7052423001 | 2.20 ppm |
2018-05-23 | 7052599001 | 3.90 ppm |
2018-05-23 | 7052599005 | 6.80 ppm |
2018-06-12 | 7054535003-POCS | 2.30 ppm |
2018-06-14 | 7054896005 | 3.70 ppm |
2018-06-14 | 7054896007 | 3.80 ppm |
2018-06-14 | 7054896006 | 3.80 ppm |
2018-06-27 | 7056400004 | 5.40 ppm |
2018-06-27 | 7056400002 | 3.10 ppm |
2018-07-17 | 7058542001-POCS | 0.0990 ppm |
2018-07-17 | 7058542003-SEC | 0.770 ppm |
2018-07-18 | 7058642004-POCS | 5.50 ppm |
2018-07-18 | 7058642001-POCS | 2.90 ppm |
2018-07-31 | 7059900006 | 4.40 ppm |
2018-07-31 | 7059900004-POCS | 3.10 ppm |
2018-08-07 | 7060610001-POCS | 2.20 ppm |
2018-08-29 | 7063131005-POCS | 0.000210 ppm |
2018-08-29 | 7063131003 | 4.60 ppm |
2018-08-29 | 7063131004-POCS | 4.10 ppm |
2018-08-29 | 7063131002 | 4.00 ppm |
2018-08-30 | 7063322004 | 5.90 ppm |
2018-08-30 | 7063322002 | 3.90 ppm |
2018-09-25 | 7065814005 | 1.80 ppm |
2018-09-27 | 7066136005 | 4.80 ppm |
2018-09-27 | 7066136001-POCS | 3.30 ppm |
2018-10-24 | 7069415002 | 4.70 ppm |
2018-10-24 | 7069415003 | 5.50 ppm |
2018-10-25 | 7069037003-POCS | 0.0640 ppm |
2018-10-25 | 7069037004-PRI | 2.20 ppm |
2018-10-30 | 7069415004-POCS | 4.10 ppm |
2018-10-31 | 7069606008 | 2.70 ppm |
2018-10-31 | 7069606004 | 5.20 ppm |
2018-10-31 | 7069606002-POCS | 2.30 ppm |
2018-11-16 | 7071362004-POCS | 3.90 ppm |
2018-11-21 | 7071731004 | 2.70 ppm |
2018-11-27 | 7072247001 | 2.70 ppm |
2018-11-27 | 7072064005 | 4.30 ppm |
2018-11-27 | 7072064002 | 1.90 ppm |
2018-12-11 | 7073629002-POCS | 3.00 ppm |
2018-12-13 | 7073929002 | 2.80 ppm |
2018-12-13 | 7073929004 | 4.60 ppm |
2018-12-13 | 7073929006-PRI | 0.620 ppm |
2018-12-13 | 73929001-PRI | 0.150 ppm |
2018-12-14 | 7074055004-POCS | ND |
2018-12-18 | 7074281004 | 2.70 ppm |
2019-01-16 | 7076809001 | 0.120 ppm |
2019-01-16 | 7076809002 | 2.10 ppm |
2019-01-23 | 7077406002 | 4.80 ppm |
2019-01-24 | 7077514002-POCS | 0.00250 ppm |
2019-01-24 | 7077514005 | 5.10 ppm |
2019-01-24 | 7077514006 | 0.190 ppm |
2019-01-29 | 7077848004 | 3.90 ppm |
2019-01-29 | 7077848005-POCS | 0.710 ppm |
2019-02-21 | 7080319001 | 4.00 ppm |
2019-02-26 | 7080642001 | 2.20 ppm |
2019-02-28 | 7080954003 | 6.50 ppm |
2019-02-28 | 7080954009 | 5.40 ppm |
2019-02-28 | 7080954002 | 7.70 ppm |
2019-02-28 | 7080954004 | 6.80 ppm |
2019-03-14 | 7082388003 | 3.00 ppm |
2019-03-18 | 7082683005 | 4.80 ppm |
2019-03-19 | 7082777002 | 3.80 ppm |
2019-03-19 | 7082777005 | 4.70 ppm |
2019-03-20 | 7082967005 | 5.50 ppm |
2019-04-16 | 7085917001 | 1.90 ppm |
2019-04-18 | 7086470005 | 4.10 ppm |
2019-04-18 | 7086470004 | 4.50 ppm |
2019-04-18 | 7086470003 | 4.30 ppm |
2019-04-26 | 7087311004 | 5.40 ppm |
2019-04-26 | 7087311001 | 3.90 ppm |
2019-04-30 | 7087555004 | 4.30 ppm |
2019-05-16 | 7089865007-POCS | 4.40 ppm |
2019-05-22 | 7090520005 | 4.30 ppm |
2019-05-29 | 7091302004 | 3.90 ppm |
2019-05-29 | 7091302007 | 3.30 ppm |
2019-05-29 | 7091302001 | 2.20 ppm |
2019-06-13 | 7093528006 | 4.50 ppm |
2019-06-13 | 7093528008-POCS | 4.80 ppm |
2019-06-13 | 7093528001-POCS | 2.30 ppm |
2019-06-19 | 7094244004 | 3.30 ppm |
2019-06-19 | 7094244010 | 4.40 ppm |
2019-06-19 | 7094244002 | 5.60 ppm |
2019-07-17 | 7097812001 | 0.200 ppm |
2019-07-17 | 7097812002 | 2.50 ppm |
2019-07-19 | 7098205003 | 2.70 ppm |
2019-07-25 | 7098908005 | 5.70 ppm |
2019-07-26 | 7099088005 | 6.20 ppm |
2019-07-26 | 7099088002 | 4.30 ppm |
2019-07-30 | 7099328003-PRI | 2.90 ppm |
2019-07-30 | 7099328004-PRI | 0.710 ppm |
2019-08-01 | 7099664001-PRI | 3.40 ppm |
2019-08-01 | 7099664004-PRI | 4.10 ppm |
2019-08-02 | 7099786004-PRI | 3.70 ppm |
2019-08-20 | 70102101001 | 3.00 ppm |
2019-08-21 | 70102180003 | 0.00540 ppm |
2019-08-29 | 70103135004-POCS | 4.20 ppm |
2019-08-29 | 70103135002 | 4.20 ppm |
2019-08-29 | 70103135005 | 0.00530 ppm |
2019-08-29 | 70103135003 | 4.20 ppm |
2019-08-29 | 70103135008 | 3.50 ppm |
2019-09-12 | 70104737006 | 4.60 ppm |
2019-09-27 | 70106586005 | 5.40 ppm |
2019-09-27 | 70106586001 | 3.70 ppm |
2019-10-24 | 70109665004 | 3.80 ppm |
2019-10-29 | 70110021002 | 3.00 ppm |
2019-10-29 | 70110021004 | 5.00 ppm |
2019-10-31 | 70110292005 | 3.90 ppm |
2019-11-14 | 70111925003 | 3.30 ppm |
2019-11-15 | 70112007004 | 5.30 ppm |
2019-11-21 | 70112818009 | 4.80 ppm |
2019-11-21 | 70112818005 | 4.80 ppm |
2019-11-21 | 70112818007 | 2.40 ppm |
2019-12-11 | 70114831006 | 0.00260 ppm |
2019-12-11 | 70114831003 | 3.60 ppm |
2019-12-11 | 70114831002 | 3.70 ppm |
2019-12-11 | 70114831005 | 0.00250 ppm |
2019-12-17 | 70115597004 | 5.70 ppm |
2019-12-17 | 70115597002 | 2.50 ppm |
2019-12-19 | 70116040005 | 4.40 ppm |