U.S. imposes first-ever national drinking water limits on PFAS (apnews.com)

Article summary

The US has imposed its first-ever national drinking water limits on PFAS, a broad family of chemical substances. The new rule sets strict limits on two common types of PFAS, PFOA and PFOS, at 4 parts per trillion, and limits three other types to 10 parts per trillion. Water providers will have to test for these PFAS chemicals and notify the public when levels are too high. The move aims to address the growing concern over the presence of PFAS in drinking water across the country.

Main themes

• PFAS regulation
• Drinking water safety
• Environmental pollution
• Water treatment
• Public health

What commenters say

• The new limits on PFAS in drinking water are a step in the right direction, but some argue that they do not go far enough to address the issue.
• Some commenters are concerned that water providers may only be required to notify the public of high PFAS levels, without taking action to remove the contaminants.
• The use of reverse osmosis filters can remove PFAS from drinking water, but some argue that these filters may introduce other contaminants, such as nanoplastics.
• Distilled water may not be a suitable alternative to filtered water, as it can be demineralized and potentially lead to health problems if consumed in large quantities.
• Some commenters are skeptical of the effectiveness of commercial water filters in removing PFAS and other contaminants, and advocate for more rigorous testing and certification.
• The cost and accessibility of water testing services are a concern for some, who argue that it should be easier and more affordable for individuals to have their water tested for contaminants.
• There is a need for more comprehensive testing of drinking water, including for microplastics and other emerging contaminants, in order to ensure public health and safety.