Where Does Drinking Water Come From?

Some systems take water from a river, lake, or reservoir. This is surface water. Other systems pump groundwater from wells. Some utilities use more than one source or change sources during the year. Each source has its own mix of particles, minerals, natural organic matter, and possible microorganisms. A source can look clean and still contain something that must be addressed. Water-treatment plants are built around the source they serve and the rules that apply. A process used at a river plant may be unnecessary at one well system, while that well may need a special step to remove iron or manganese. Learn where your facility's water comes from, how it reaches the plant, and what usually changes its quality.