EWG's Tap Water Database — 2019 UPDATE



City of Angleton

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 exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20121.13 ppm330.680 ppm - 1.48 ppm
20130.997 ppm330.920 ppm - 1.10 ppm
20140.790 ppm330.700 ppm - 0.840 ppm
20150.970 ppm330.810 ppm - 1.10 ppm
20160.773 ppm330.490 ppm - 0.940 ppm
20170.520 ppm440.110 ppm - 0.790 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
2012-01-03AB767811.48 ppm
2012-01-03AB767840.680 ppm
2012-01-03AB767831.22 ppm
2013-01-29AC089361.10 ppm
2013-01-29AC089350.920 ppm
2013-01-29AC089290.970 ppm
2014-02-25AC443850.830 ppm
2014-02-25AC443550.840 ppm
2014-05-08AC535180.700 ppm
2015-01-15AC763571.10 ppm
2015-01-15AC763580.810 ppm
2015-01-15AC763541.000 ppm
2016-01-20AD188000.940 ppm
2016-01-20AD187990.890 ppm
2016-04-14AD330810.490 ppm
2017-01-12AD645410.790 ppm
2017-01-12AD645800.640 ppm
2017-03-28AD770270.110 ppm
2017-05-23AD851400.540 ppm