Know Your Environment. Protect Your Health.

Nitrate

Lakewood 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.

 

98

Samples

0

Samples exceeding legal limit (MCL)

77

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.806 ppm2321ND - 1.85 ppm
20190.647 ppm2015ND - 1.90 ppm
2020N/A00N/A
20210.699 ppm1915ND - 1.94 ppm
20220.672 ppm1813ND - 1.86 ppm
20230.611 ppm1813ND - 1.76 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

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
2018-03-221.80 ppm
2018-07-230.470 ppm
2018-07-231.04 ppm
2018-07-230.990 ppm
2018-07-230.650 ppm
2018-07-231.60 ppm
2018-07-230.760 ppm
2018-07-230.860 ppm
2018-07-230.570 ppm
2018-07-230.580 ppm
2018-07-241.27 ppm
2018-07-240.800 ppm
2018-07-240.240 ppm
2018-07-240.230 ppm
2018-07-24ND
2018-07-240.420 ppm
2018-07-240.430 ppm
2018-07-301.85 ppm
2018-07-30ND
2018-07-301.60 ppm
2018-07-300.220 ppm
2018-07-301.76 ppm
2018-10-290.390 ppm
2019-07-030.470 ppm
2019-07-030.930 ppm
2019-07-03ND
2019-07-030.290 ppm
2019-07-03ND
2019-07-030.790 ppm
2019-07-030.510 ppm
2019-07-091.24 ppm
2019-07-090.460 ppm
2019-07-090.360 ppm
2019-07-090.850 ppm
2019-07-090.900 ppm
2019-07-090.690 ppm
2019-07-091.53 ppm
2019-07-091.90 ppm
2019-07-170.240 ppm
2019-07-171.77 ppm
2019-07-17ND
2019-08-26ND
2019-08-26ND
2021-05-1741152461.94 ppm
2021-05-1741150230.450 ppm
2021-05-1741150240.250 ppm
2021-05-1741150390.600 ppm
2021-05-1741150260.680 ppm
2021-05-1741150280.840 ppm
2021-05-1741150301.15 ppm
2021-05-1741150320.940 ppm
2021-05-194115079ND
2021-05-194115081ND
2021-05-194115894ND
2021-05-1941158930.600 ppm
2021-05-1941158910.720 ppm
2021-05-1941158920.840 ppm
2021-05-1941150800.400 ppm
2021-05-1941253241.74 ppm
2021-07-0741391480.420 ppm
2021-07-074139147ND
2021-12-0842152531.72 ppm
2022-07-1143284370.520 ppm
2022-07-1143103910.420 ppm
2022-07-1143103920.710 ppm
2022-07-1143322950.450 ppm
2022-07-1143103980.350 ppm
2022-07-1143322960.580 ppm
2022-07-134330492ND
2022-07-1343184990.860 ppm
2022-07-1343185001.26 ppm
2022-07-134338555ND
2022-07-1343184971.85 ppm
2022-07-1343184981.86 ppm
2022-08-114338571ND
2022-08-1143574880.780 ppm
2022-08-1143319880.710 ppm
2022-08-1143315331.74 ppm
2022-08-114338569ND
2022-12-084397515ND
2023-06-214470102ND
2023-06-2144700711.56 ppm
2023-06-2144701001.76 ppm
2023-06-214470103ND
2023-06-2144701010.720 ppm
2023-06-2144700680.450 ppm
2023-06-2144700671.20 ppm
2023-07-064478177ND
2023-07-0644781920.460 ppm
2023-07-0644781860.700 ppm
2023-07-0644781821.28 ppm
2023-07-0644781890.820 ppm
2023-07-0644781790.320 ppm
2023-07-0644781810.480 ppm
2023-07-0644781880.690 ppm
2023-07-064478190ND
2023-08-0245038790.550 ppm
2023-10-044538107ND