Is it Safe to Use a Plastic Tank for Drinking Water?

Material Safety Considerations

When selecting a water storage tank for drinking water, it is essential to consider the material’s safety and durability. Plastic tanks, especially those made from Polyvinyl Chloride (PVC) or High-Density Polyethylene (HDPE), may leach chemicals into the stored water over time. The rate of leaching depends on the tank’s age, exposure to sunlight, and water quality.

Regulatory Standards and Certifications

In the United States, the Food and Drug Administration (FDA) regulates water storage tanks used for drinking water. Tanks must meet the FDA’s guidelines for safety and sanitation. Look for certifications like NSF International’s Standard 61, which ensures the tank’s materials meet or exceed the FDA’s standards for drinking water. Some tanks may also be certified by the International Association of Plumbing and Mechanical Officials (IAPMO) or the American Water Works Association (AWWA).

Alternatives to Plastic Tanks

For drinking water storage, consider using tanks made from safe, durable materials like food-grade stainless steel or fiberglass. Stainless steel tanks are resistant to corrosion and can withstand extreme temperatures. Fiberglass tanks are non-toxic and offer excellent chemical resistance. Both options are suitable for storing drinking water and can be designed with features like sanitary couplings and easy-clean surfaces. When purchasing a tank, ensure it is specifically designed for potable water storage and meets the necessary regulatory standards.