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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Okeechobee Utility 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.

 

58

Samples

0

Samples exceeding legal limit (MCL)

53

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.308 ppm660.1000 ppm - 0.570 ppm
20130.257 ppm660.170 ppm - 0.480 ppm
20140.465 ppm1514ND - 1.30 ppm
20150.600 ppm16160.180 ppm - 1.60 ppm
20160.476 ppm109ND - 0.890 ppm
20170.298 ppm550.140 ppm - 0.608 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 Result
2012-03-260.370 ppm
2012-04-090.320 ppm
2012-05-100.1000 ppm
2012-08-010.570 ppm
2012-08-010.140 ppm
2012-12-120.350 ppm
2013-03-110.170 ppm
2013-06-200.210 ppm
2013-08-150.480 ppm
2013-08-150.190 ppm
2013-08-150.170 ppm
2013-12-050.320 ppm
2014-03-050.190 ppm
2014-04-210.170 ppm
2014-05-270.300 ppm
2014-06-041.30 ppm
2014-06-040.710 ppm
2014-06-040.551 ppm
2014-06-040.590 ppm
2014-07-070.170 ppm
2014-07-290.360 ppm
2014-08-110.320 ppm
2014-09-030.480 ppm
2014-09-030.400 ppm
2014-09-030.820 ppm
2014-09-030.620 ppm
2014-10-20ND
2015-02-040.180 ppm
2015-03-050.340 ppm
2015-03-050.620 ppm
2015-03-051.20 ppm
2015-03-060.350 ppm
2015-05-110.320 ppm
2015-06-041.20 ppm
2015-06-040.630 ppm
2015-06-040.480 ppm
2015-06-040.450 ppm
2015-06-251.60 ppm
2015-06-250.720 ppm
2015-07-020.280 ppm
2015-07-020.280 ppm
2015-07-070.740 ppm
2015-10-120.210 ppm
2016-03-020.250 ppm
2016-05-020.150 ppm
2016-06-130.480 ppm
2016-07-110.360 ppm
2016-08-08ND
2016-09-090.710 ppm
2016-09-090.750 ppm
2016-09-090.890 ppm
2016-09-090.510 ppm
2016-10-120.660 ppm
2017-03-140.150 ppm
2017-06-080.200 ppm
2017-09-210.140 ppm
2017-10-110.391 ppm
2017-11-150.608 ppm