Arlington County

Municipal water supplies come from various sources including rivers, lakes, reservoirs, springs, and wells. As water travels over land surfaces or through soil layers, it naturally dissolves minerals and can pick up substances from animal and human activities.

Potential contaminants in water sources may include:

• Microbial contaminants like viruses and bacteria from sewage facilities, septic systems, farms, and wildlife
• Inorganic substances such as salts and metals occurring naturally or from urban runoff, industrial wastewater, oil/gas production, and agriculture
• Pesticides and herbicides from various sources including farming, urban stormwater runoff, and residential usage
• Organic chemical contaminants including synthetic and volatile compounds from industrial processes, petroleum production, gas stations, urban runoff, and septic systems
• Radioactive elements that may occur naturally or result from oil/gas production and mining

Arlington's water treatment processes are designed to remove these contaminants, ensuring the water delivered to your home is safe for consumption.

The Centers for Disease Control and Prevention (CDC) provides important information about water safety and health. They offer guidance on waterborne illnesses, proper water treatment methods, and how to protect yourself from potential contaminants.

If you have specific questions about your water quality and health, the CDC's resources can help you understand potential risks and appropriate precautions to take.