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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

City of Alexandria

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for nitrate. Sample information shown below was taken by Fairfax County Water Authority.

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.

 

108

Samples

0

Samples exceeding legal limit (MCL)

108

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.05 ppm21210.600 ppm - 1.60 ppm
20130.937 ppm19190.400 ppm - 1.90 ppm
20141.07 ppm17170.480 ppm - 2.03 ppm
20150.924 ppm12120.560 ppm - 1.32 ppm
20160.927 ppm15150.480 ppm - 1.62 ppm
20171.16 ppm24240.760 ppm - 1.69 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

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for nitrate. Sample information shown below was taken by Fairfax County Water Authority.

Date Lab ID Result
2012-01-10FW11122045-06_NI1.30 ppm
2012-01-10FW11122045-11_NI1.000 ppm
2012-02-13FW12012706-06_NI1.40 ppm
2012-02-13FW12012706-11_NI1.000 ppm
2012-03-06FW12022707-06_NI1.000 ppm
2012-03-06FW12022707-11_NI0.900 ppm
2012-04-17FW12032312-06_NI0.900 ppm
2012-04-17FW12032312-11_NI0.800 ppm
2012-05-29FW12042601-06_NI1.10 ppm
2012-05-29FW12042601-11_NI0.700 ppm
2012-06-26FW12052349-06_NI1.10 ppm
2012-06-26FW12052349-11_NI0.600 ppm
2012-08-21FW12062212-11_NI1.000 ppm
2012-08-21FW12062212-06_NI0.900 ppm
2012-09-18FW12082864-12_NI0.900 ppm
2012-09-18FW12082864-06_NI0.900 ppm
2012-10-16FW12092445-12_NI1.60 ppm
2012-10-16FW12092445-06_NI1.30 ppm
2012-11-06FW12102513-06_NI1.50 ppm
2012-11-06FW12102513-12_NI0.600 ppm
2012-12-06FW12112963-01_NI1.60 ppm
2013-02-26FW13012854-03_NI1.60 ppm
2013-02-26FW13012854-09_NI0.800 ppm
2013-03-26FW13022839-03_NI1.10 ppm
2013-03-26FW13022839-09_NI0.600 ppm
2013-04-23FW13032856-03_NI0.900 ppm
2013-04-23FW13032856-09_NI0.600 ppm
2013-05-21FW13042629-03_NI1.000 ppm
2013-05-21FW13042629-10_NI0.800 ppm
2013-07-09FW13062657-10_NI1.10 ppm
2013-07-09FW13062657-03_NI0.900 ppm
2013-08-06FW13073104-03_NI0.900 ppm
2013-08-06FW13073104-10_NI0.600 ppm
2013-09-17FW13082929-02_NI0.900 ppm
2013-09-17FW13082928-02_NI0.400 ppm
2013-10-10FW13092572-02_NI1.90 ppm
2013-10-10FW13092570-02_NI0.400 ppm
2013-11-14FW13102424-02_NI1.10 ppm
2013-11-14FW13102423-02_NI1.10 ppm
2013-12-05FW13112104-01_NI1.10 ppm
2014-01-30FW13122701-03_NI2.03 ppm
2014-01-30FW13122702-03_NI0.980 ppm
2014-02-27FW14012839-03_NI1.31 ppm
2014-02-27FW14012840-03_NI0.850 ppm
2014-03-27FW14022109-03_NI1.10 ppm
2014-03-27FW14022110-03_NI0.760 ppm
2014-04-24FW14032669-03_NI1.02 ppm
2014-04-24FW14032670-03_NI0.480 ppm
2014-07-24FW14061907-03_NI0.950 ppm
2014-07-24FW14061906-03_NI0.780 ppm
2014-09-25FW14081481-03_NI1.18 ppm
2014-09-25FW14081479-03_NI0.940 ppm
2014-10-30FW140923099-03_N1.59 ppm
2014-10-30FW140923098-03_N0.840 ppm
2014-11-13FW141022038-03_N1.45 ppm
2014-11-13FW141022037-03_N0.850 ppm
2014-12-03FW141113029-02_N1.07 ppm
2015-01-2700125-FAIRFAX CO1.32 ppm
2015-02-1200125-FAIRFAX CO1.31 ppm
2015-03-1200125-FAIRFAX CO0.950 ppm
2015-04-0900125-FAIRFAX CO0.620 ppm
2015-05-0700125-FAIRFAX CO0.900 ppm
2015-06-1100125-FAIRFAX CO0.830 ppm
2015-07-0900125-FAIRFAX CO1.26 ppm
2015-08-0600125-FAIRFAX CO0.650 ppm
2015-09-1000125-FAIRFAX CO0.740 ppm
2015-10-1500125-FAIRFAX CO1.22 ppm
2015-11-1200125-FAIRFAX CO0.560 ppm
2015-12-0300125-FAIRFAX CO0.730 ppm
2016-01-14FW151231001-02_N1.62 ppm
2016-02-04FW160121044-02_N1.12 ppm
2016-03-10FW160224042-02_N1.42 ppm
2016-04-14FW160316067-02_N0.650 ppm
2016-05-12FW160422080-02_N0.790 ppm
2016-06-09FW160525077-02_N1.11 ppm
2016-07-14FW160617069-02_N0.740 ppm
2016-08-11FW160725068-02_N0.850 ppm
2016-09-08FW160825057-02_N0.480 ppm
2016-10-13FW160922038-02_N1.02 ppm
2016-11-03FW161018056-02_N0.680 ppm
2016-12-01FW161121047-01_N0.860 ppm
2016-12-01FW161121047-03_N0.860 ppm
2016-12-01FW161121047-04_N0.860 ppm
2016-12-01FW161121047-02_N0.840 ppm
2017-01-26FW161216029-03_N1.53 ppm
2017-01-26FW161216028-03_N1.11 ppm
2017-02-23FW170126072-03_N1.14 ppm
2017-02-23FW170126071-03_N1.06 ppm
2017-03-09FW170227041-03_N1.16 ppm
2017-03-09FW170227045-03_N0.990 ppm
2017-04-13FW170328070-03_N0.870 ppm
2017-04-13FW170328069-03_N0.760 ppm
2017-05-11FW170426060-03_N0.950 ppm
2017-05-11FW170426062-03_N0.910 ppm
2017-07-13FW170628091-03_N1.56 ppm
2017-07-13FW170628092-03_N1.32 ppm
2017-08-10FW170724080-03_N1.37 ppm
2017-08-10FW170724081-03_N0.920 ppm
2017-09-14FW170821082-03_N1.04 ppm
2017-09-14FW170821081-03_N0.990 ppm
2017-10-12FW170927068-03_N1.69 ppm
2017-10-12FW170927067-03_N0.820 ppm
2017-11-02FW171024046-03_N1.61 ppm
2017-11-02FW171024045-03_N1.09 ppm
2017-12-07FW171120061-02_N1.25 ppm
2017-12-07FW171120061-04_N1.22 ppm
2017-12-07FW171120061-03_N1.20 ppm
2017-12-07FW171120061-01_N1.19 ppm