Nitrat i dricksvatten : jämförelse av nitrathalter, mellan åren 1975 och 2005
The environment protection and public health department in Ronneby wanted to have a study of nitrateconcentrations in private water supply. The reason is a new environmental quality standard.The contaminant level for nitrate is 50 mg/l. Water containing excessive amounts of nitrate should notbe given to infant with age under one year. It could cause a disease called methemoglobinemia. Thepurpose of the study was to compare areas pervade of agriculture respectively forestry, and betweendigged and drilled wells. The study was time dependent as well, from 1975 – 1990 until 2005.The testing points were selected from existing archive and an advertisement in the local paper.The results are shown in tabular forms. The study shows the expected result for digged and drilledwells. The higher amount of nitrate is found in the digged wells, and the concentration of nitrate haveexceeded during time. For the drilled wells is the result the opposite. Areas pervade of forestry andagriculture didn't achieve the expected result. Agriculture shows a decrease of the amount of nitrate andforestry an increased amount of nitrate. The cause of increasing nitrate concentration is likelydependent on changed animal husbandry, for example horse keeping. Another reason could be thedeposit of different nitrogen compounds.
Source Type:Master's Thesis
Keywords:nitrate drinking water private supply
Date of Publication:06/07/2006