A Summer of Freshwater Sampling in LA
Blaire, Olivia, and Luke collecting storm drain samples along the Elysian Valley.
Luke Ginger, Water Quality Scientist at Heal the Bay, recounts the latest season of freshwater monitoring, reveals the disappointingly poor water quality grades, and explains what this means for public health and the future of the LA River.
The summer of 2019 marked Heal the Bay’s sixth summer sampling in Malibu Creek State Park and the fifth summer sampling in the LA River freshwater recreation areas. Currently, there is no federal or state mandate or funding for monitoring freshwater recreation areas as there is for ocean beaches. So local freshwater stakeholders monitor water quality in LA County with their own funds. Heal the Bay samples in various places to fill in some of the sampling gaps left by those organizations.
This season, we regularly monitored the Rock Pool and Las Virgenes Creek in Malibu Creek State Park, the LA River at Burbank Boulevard, and three sites in the LA River near Elysian Valley. We also sample the storm drains along the Elysian Valley to help us understand the origin and amount of bacteria entering the LA River. In total, our team collected 96 river and stream samples, and about 84 storm drain samples.
Disappointing Findings, Yet Encouraging Outreach
Grades in the LA River recreation zones were disappointingly poor this summer. The four sites we tested had good water quality (green grades) just 16% of the time on average. That means bacteria levels exceeded at least one standard (yellow or red grades) 84% of the time in the LA River. Malibu Creek State Park sites had similar water quality where green grades were issued 19% and bacteria exceeded standards 81% of the time. For the public, this means that water quality presents indicates a risk for human illness more than 80% of the time.
In addition to protecting public health by reporting freshwater quality grades, our mission is to conduct outreach and get more people invested in improving the health of the LA River Watershed. This summer was jam-packed with events that allowed us to spread our message and make an impact. We tabled at events along the LA River, participated in river cleanups (including the first-ever Trash Blitz at Compton Creek) and also collaborated with Pacoima Beautiful, FOLAR and CSUN to educate high school students on water quality in the river. This fall, we are continuing our student outreach by giving lectures at local high schools and providing students hands-on experience collecting water samples.
Protecting the public from potentially harmful water has been Heal the Bay’s mission for the past 30 years with the Beach Report Card, so our next step has been to provide the same water quality information for freshwater recreation areas. Because a healthy Bay starts with a healthy LA. To dive deeper into our freshwater work, check out our River Report Card. And stay tuned for the next release in Spring 2020, which will include a full assessment of these recent water quality grades.
We are also anxiously waiting for the release of the LA River Master Plan in December 2019, which is LA County Department of Public Works’ plan to revitalize parts of the river. We are eager to see an LA River that supports both nature and the surrounding communities without displacing them, so we urge everyone to follow the LA River Master Plan updates and get involved.
Our monitoring program also got some attention in the media!