Faith Jonokallyan Sangstha has been dealing with arsenic and excess iron since 2016 and has ample experience. Tests arsenic and iron levels in tubewell water in marginal areas of the country. Red color indicates excess arsenic or iron in water and green color if it is suitable for consumption. At the upazila level, municipality and union level apply to the chairman to arrange for the installation of deep/shallow tube-wells. Public awareness of the harmful effects of arsenic and iron discourages the use of water containing arsenic or excess iron.