Water purification plays a key role in ensuring access to safe drinking water. Safe drinking water positively impacts the health of the entire community. Systems are in place to ensure ongoing water quality, INCLUDING water quality testing. The testing helps ensure the water treatment process results in a product that MEETSFEDERAL water quality guidelines. Water analysis involves looking for SEVERAL kinds of contaminants, including unsafe levels of organic, inorganic, microbial and/or radioactive contaminants.