$averPak 2 Pack - Includes 2 $averPak Seychelle 28oz Flip Top Bottles with the ADVANCED Filter and 2 Spare Filters At least 74 million Americans in 42 states drink chromium-polluted tap water, much of it likely in the cancer-causing hexavalent form (chromium-6). According to the World Health Organization, 3.2 million children under the age of five in developing nations die each year as a result of unsafe drinking water and poor sanitation. Contaminated water can transmit diseases such diarrhea, cholera, dysentery, typhoid, andpolio and contributes to the development of diseases such as cancer, organ damage, and physical and intellectual disabilities. The Institute for Health Metrics and Evaluation (IHME) estimates that lead exposure accounted for 12.4% of the global burden of idiopathic developmental intellectual disability, 2.5% of the global burden of ischaemic heart disease and 2.4% of the global burden of stroke. <span class="a-text-bold">Radiological</span> gross beta, radon 222, alpha radium 226, uranium, plutonium, cesium 134 and cesium 137.