News Item

Questions about PFAS?

The movie Dark Waters, a film featuring Mark Ruffalo, has raised many concerns about our nation’s water quality.

The movie is about a corporate defense attorney taking on a lawsuit against DuPont to fight PFAS (a class of chemicals found in our environment) and its effect on our drinking water. The story was first laid out in a January 2016 story in The New York Times Magazine.

We share your worries and are here and committed to talking about the issue with all our customers and the community.

We believe that the movie may help everyone better understand the importance of source water protection in keeping drinking water supplies safe. As a water district, we think that conversation is critical for all of us.

South Coast Water District’s Commitment to Our Community

  • We are committed to transparency and providing our customers with information regarding Perfluorooctanoic acid (PFOA) and Perfluorooctane sulfonate (PFOS).
  • Our water quality surpasses the standards set by the Safe Drinking Water Act.

South Coast Water Drinking Water

  •  South Coast Water District, 85 to 100 % of our water is imported from the Metropolitan Water District of Southern California.
  • The Metropolitan Water District of Southern California continues to ensure the region has a safe and reliable drinking water supply.
  • No PFOA or PFOS have been detected in Metropolitan’s imported water supplies.

 PFAS in Groundwater                                                        

The chemicals have, however, been detected in some groundwater wells in Southern California. However, the only groundwater supplied by South Coast Water comes from our Groundwater Recovery Facilities (GRF).

  • The water recovered from the GRF undergoes reverse osmosis (RO) before it is distributed.
  • Reverse Osmosis is one of the three treatments that remove these chemicals from the water supply.
  • The water is tested regularly for containments, and no PFOA or PFOS has been detected in our water supply before treatment by RO.

 You can review our water quality from the District’s annual consumer confidence report located at

More resources:

Metropolitan Water District – Ensuring a Safe Water Supply

PFAS at a Glance

PFAS – Frequently Asked Questions

DrinkTap page on PFAS.