So, is liquid rubber foundation sealant safe for drinking water? The short answer is no. Currently, the product does not have certification allowing it to be used for drinking water systems. This means that the product has not been tested or approved for use in drinking water systems, and may not meet the standards required for safe drinking water.

It's important to understand that liquid rubber foundation sealant is not specifically designed or marketed for use in drinking water systems. While it can be used to seal pipes or leaks in plumbing systems, it's not approved or recommended for use in potable water systems. In fact, using a product like liquid rubber sealant on drinking water systems could potentially present health risks if the product leaches into the water.
While there are many sealants on the market that are specifically designed for use in potable water systems, it's crucial to do your research and choose a product that is certified and meets the highest standards for safe drinking water. Using the wrong product on your drinking water system could not only present a potential health risk, but it could also cause damage to your plumbing system and lead to costly repairs.
In addition to choosing a certified product for your drinking water system, it's important to ensure that your plumbing system is properly installed, maintained and inspected on a regular basis. This can help identify issues early on and prevent potential problems that could impact the quality of your water.
In conclusion, while liquid rubber foundation sealant may be a suitable product for sealing leaks and protecting your home's foundation, it should not be used on drinking water systems. It's important to choose a certified product that meets the highest standards for safe drinking water, and to ensure your plumbing system is properly installed and maintained. By taking these important steps, you can help protect your family's health and ensure the safety of your drinking water.