Annual Beach Report Card 2020

Our 30th Anniversary of the annual Beach Report Card:

Thirty years ago people were getting sick from going in the ocean, and there was no way for them to know when or where they were at risk. Heal the Bay introduced the Beach Report Card in 1990-1991, a tool to help keep the public safe at the beach. It is also a powerful resource used to advocate for water quality policies and improvement projects.

Thirty years later, Heal the Bay is stoked to release the 30th annual Beach Report Card, because a day at the beach shouldn’t make anyone sick. This report assigns A-to-F letter grades for more than 500 California beaches, based on levels of bacterial pollution in the ocean.

So, what did our staff scientists find? Here are our major takeaways:

  • California beach water quality improved in 2019-2020, driven in large part by decreased rainfall. Rainfall across coastal counties in California was 12 percentage points lower than the historical average. Less rain means fewer pollutants, including bacteria, were flushed through storm drains and rivers into the ocean. Because of this pollutant flushing, only 65% of CA beaches received good or excellent grades during wet weather.
  • The notorious Beach Bummer list—a ranking of the ten most polluted beaches in the state—includes six bacteria-impaired beaches within San Mateo County. This is an unusually high number of beach bummers for a single county. The remaining four beach bummers are located in Southern California and are frequent pollution offenders. (View the Beach Bummers of 2020.)
  • While scientists remain deeply concerned about water quality issues, there is some good news for beachgoers. 92% of the 500 California beaches monitored by Heal the Bay received an A or B grade for the summer season. During dry weather in the winter season, 91% of beaches received an A or B grade, which was slightly better than average. (Go to pages 5-6 of the report for the full Executive Summary.)
  • Overall, 42 out of more than 500 monitored California beaches made it on Heal the Bay’s coveted Honor Roll this year, which is higher than last year (33) and the year before (37) likely due to lower than average rainfall. To make it on the Honor Roll the beach must be monitored year-round and score perfect A+ water quality grades each week in all seasons and weather conditions. Most beaches on the Honor Roll are in Southern California because many counties in Central California and Northern California do not sample frequently enough during the winter months. (For the full Honor Roll list, see pages 14-15 of the report.)
  • The COVID-19 pandemic has upended daily life around the world and has devastated households and communities. We must continue to practice physical distancing and other health and safety procedures, and to keep in mind that a large percentage of people can spread the virus without showing symptoms. The closure of beaches in many locations due to COVID-19 has highlighted the importance of beaches in our lives as open spaces for recreation, relaxation, exploration, and places to gather. But, COVID-19 has also exposed major systemic failures; open spaces, including beaches, are not equally accessible to all people and the public health impacts of health crises as well as poor water and air quality are not shared equally across communities. Low-income communities of color tend to be the most burdened and vulnerable communities, bearing the brunt of environmental and economic impacts. As we plan for the future post-COVID-19, we can and must do better to protect everyone. (Learn more on page 49.)
  • Heal the Bay is expanding the Beach Report Card to include three beaches in Tijuana, Mexico: El Faro, El Vigia, and Playa Blanca. These popular beaches in Mexico, along with Imperial Beach in California, US, are impacted by millions of gallons of raw sewage that flow into the ocean through the Tijuana River. As a result, the public is at a greater risk for getting ill and local beaches are often closed for months on end. Heal the Bay is partnering with Proyecto Fronterizo de Educación Ambiental to help spread awareness about water quality in Tijuana. Margarita Diaz, Director of Proyecto Fronterizo de Educación Ambiental, says “Showing the integration of what is happening on both the US and Mexican portion of our watershed is a long overdue requirement for understanding environmental health issues—particularly as they relate to water quality in our shared watershed—given that they are intrinsically connected.” (Learn more on page 50.)

Tips for staying safe at the beach:

  • Check for latest water quality grades (available on iOS & Android)
  • Avoid shallow, enclosed beaches with poor water circulation
  • Swim at least 100 yards away from flowing storm drains, creeks, and piers
  • Stay out of the water for at least 72-hours after a rain event
  • Wear a mask when not in the water and remain at least 6 -feet away from people not from your household at all times
  • Follow all local health and safety regulations, and check in with the lifeguard on duty for more information about the best places to swim

In analyzing the last thirty years of water quality data, one major finding we uncovered in California was the number of beach and coastal access days the public lost out on due to bacterial-pollution risks.

There have been 66,605 bacterial-pollution exceedance events at California beaches in the last 30 years (Summer Dry, Winter Dry, Wet Weather combined). That’s an average of 2,220 exceedance events per year in California. We estimate the bacterial pollution issue has resulted in 132,130 to 396,390 beach advisory days where the public has not been allowed to access the beach. See pages 22-27 to view an outline of the major policies that the Beach Report Card has influenced over the years as well as whether or not water quality has improved over time.

Download the Report

Download the Executive Summary En Español

Download the Press Release

Donate To Support This Work

About the Beach Report Card with NowCast

The annual Beach Report Card includes an analysis of water quality for three time periods: summer dry season (April through October 2019), winter dry weather (November 2019 through March 2020) and year-round wet weather conditions. The grading methodology is endorsed by the State Water Resources Control Board. All county health departments in California are required to test beach water quality samples for fecal indicator bacteria at least once a week during the summer season. Many counties also monitor heavily used beaches year-round. Heal the Bay compiles the complex shoreline data, analyzes it, and assigns an easy-to-understand letter grade.

In addition to providing weekly water quality grades for 500 beaches statewide, Heal the Bay scientists continue to expand NowCast, a daily water quality predictive service at 20 popular beaches in California. Using sophisticated machine learning, environmental science data, modeling, and past bacteria samples, Heal the Bay accurately predicts when beaches should post warning signs because of potential bacterial pollution. This new approach enhances public health protections by providing more advanced water quality information to public health officials and beachgoers.

Heal the Bay’s Beach Report Card is made possible through the generous support from SIMA Environmental Fund, Swain Barber Foundation, and Sony Pictures Entertainment.

For a detailed look at beach results by location, why some beach types are more vulnerable to higher levels of pollution, and detailed report methodology, please refer to our complete report. A PDF version of the 2019-20 annual Beach Report Card is available to download at


Heal the Bay hosted a live conference on June 30 at Noon to reveal this year’s annual Beach Report Card findings. Speakers included: Dr. Shelley Luce, President and CEO at Heal the Bay, Luke Ginger, Water Quality Scientist at Heal the Bay, Frankie Orrala, Angler Outreach Program Manager at Heal the Bay, and Laurie Silvan, Director of the Board for Proyecto Fronterizo de Educación Ambiental (PFEA). View recording: