Swimming Pools to Tide Pools: Your Neighborhood and ASBS Pollution

This is the second of a 10-part blog series examining the nature of ASBS, the threats they face and the actions we can take to protect these biological hotspots for future San Diegans.

I’m the new kid on the block when it comes to San Diego Coastkeeper’s marine conservation program, and I’m on a mission to soak up (no pun intended) all the details I can about our local preservation efforts in San Diego. One major nugget of wisdom I’ve learned in my hunt for knowledge is that ASBS are an integral part of San Diego’s (and California’s) marine conservation efforts. Let me impart on you some of my newly aquired insights, dear reader.

Both the La Jolla and the San Diego-Scripps ASBS are in the Los Penasquitos watershed. This highly urban water system stretches as far inland as State Route 67, and all water in that zone eventually flows to the coastline where both ASBS are located. Trash, pollution, chemicals and general muck that accumulate inland will sooner or later wash into the ocean through these coastal areas. Streams, gullies, pipes and holes in seawalls discharge inland water into the ocean, carrying with it  all the bacteria, copper and metals, oil and grease, pesticides and nutrients accumulated eastward.

In the La Jolla ASBS, most of these pollutants come from the flow of natural water bodies, stormwater runoff and sewers. Of the 196 discharges, seventeen different municipal storm drain outlets have been identified in the ASBS, and some pipes on the bluffs and gullies empty into the tide pools, which are teeming with fragile marine life.

In the San Diego-Scripps ASBS there are 92 discharges, and a lot of the pollutants come from landscaping and pipe drainage from (gasp!) private residences. Residential sources of pollution are a result of failing to pick up after pets, letting a car leak fluid onto a driveway, allowing chemicals to enter a storm drain through hosing or dumping and more.

Ever think about where lawn fertilizer, pet waste, leaking automobile fluids and pesticides end up? If it goes into a storm drain, that means it flows directly into the ocean, untreated. Sometimes this means flowing straight into an ASBS. Storm drains dump all the dog poop, motor oil and chemicals that build up on our streets and sidewalks offshore, which is why we strongly recommend staying out of the water for 3 days (72 hours) after it rains. Surfing, swimming, or snorkeling in pollution = reckless, hazardous and certainly not the best underwater view.

The City of San Diego, UCSD, Scripps Institution of Oceanography and San Diego Coastkeeper have joined forces to reach our goal of zero discharge in both ASBS. We are committed to educating the public, implementing changes and securing a clean future for not just La Jolla, but all of San Diego’s coastline. You can help protect our ASBS by making simple water-friendly choices from installing rain barrels to participating in guerilla seedballing. Stay tuned to this blog series – we will explore some of the most cutting edge techniques to help champion the clean oceans movement. Some topics to look forward to include:

Low Impact Development: Learn about methods for construction and landscaping that minimize the impact on nature and help protect water quality.

World Oceans Day: Celebrate a healthy ocean with Coastkeeper in our ASBS.

Beach Cleanups: Wonder what type of trash flows into the ASBS? This blog post will highlight data trends gathered from beach cleanups in La Jolla.

Water-Conscious Gardening: Have a beautiful yard and protect sea critters at the same time! We’ll share with you different gardening techniques that will help keep our ASBS pollution-free.

Intrigued? I know I am.