Stormwater Pollution Prevention Events
JUNE 2025
We all play a part in preventing stormwater pollution. Here are some ways to get involved in the events being held during the month of June and help protect our local waterways! All events are free unless otherwise indicated.
 Ongoing beach and community cleanups help protect the County’s waterways from stormwater pollution and can help preserve water quality for years to come. The County thanks the following beach and community cleanup event partners for their ongoing support in preventing stormwater pollution: I Love A Clean San Diego (ILACSD), Surfrider Foundation San Diego, San Diego Coastkeeper, The San Diego River Park Foundation, Think Blue San Diego, Tijuana River National Estuarine Research Reserve (TRNERR), San Diego Canyonlands, San Dieguito River Park, Friends of Ruffin Canyon, Friends of Rose Creek, Friends of Famosa Slough, Agua Hedionda Lagoon Foundation, California State Parks Foundation, City of San Diego, City of Chula Vista, City of La Mesa, ASCENDtials, San Diego Bird Alliance, Preserve Calavera, and Keep America Beautiful.
May 1 through July 4, 2025 – Keep America Beautiful Great American Cleanup – Learn more or pledge.
June 1
June 3
June 5
June 6
June 7
June 8
June 10
June 12
June 13
June 14
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9am to 11am – ILACSD and County of San Diego – Watershed Warriors: Lamar County Park. Learn more or register.
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9am to 11am – ILACSD and Think Blue San Diego – The Birds & the Bees Cleanup: Cesar Solis Community Park. Learn more or register.
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9am to 11am – Friends of Rose Creek Native Plant Garden Work Party. Learn more or RSVP.
June 17
June 18
June 19
June 20
June 21
June 22
June 24
June 26
June 27
June 28
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8:00am to 10:30am – San Diego Canyonlands Stewardship Saturday, Hollywood Canyon. Learn more or sign up.
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9am to 11am – Surfrider Foundation Ruocco Park Downtown/Seaport Village Cleanup. Learn more or register.
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9am to 11am – ILACSD and City of La Mesa Litter Free La Mesa: Murray Drive Neighborhood Cleanup. Learn more or register.
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9am to 11am – ILACSD and County of San Diego – Watershed Warriors: Lakeside - Vine Street Sweep. Learn more or register.
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9am to 11am – Agua Hedionda Lagoon Foundation Algerian Sea Lavender Removal. Learn more or sign up.
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9am to 11am – San Diego Bird Alliance Wander the Wetlands: Work Party – Kendall Frost Marsh. Learn more or register.
Monthly/Ongoing or On Your Own Stormwater Pollution Prevention Events:
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Tuesdays and Fridays, 9am to 12pm – The San Diego River Park Foundation River Assessment Field Teams (RAFT). Learn more or sign up.
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Tuesdays and Fridays, 9am to 12pm – San Dieguito River Park Dust Devils Habitat and Trail Restoration Events – Inland and Coastal Trails. Learn more.
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Wednesdays and Saturdays, 8am to 11am – The San Diego River Park Foundation River Rescue Cleanups. Learn more or sign up.
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San Diego Surfrider Foundation Ongoing Solo Cleanups. Learn more.
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Coastkeeper San Diego Six Cleanup Challenge, Flexible Dates/Times. Learn more and see list of challenge sites.
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ILACSD Adopt-A-Beach/Adopt-A Canyon Program, Flexible Dates/Flexible Times – Adopt a beach or canyon and lead independent cleanups on your schedule. Learn more and adopt a location.
 California Native Plant Society (CNPS) – The following events will be offered in June.
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Naturehood Monthly Gardening Webinars – Basics of a Fire Safe Yard – June 5, 5:30pm to 6:30pm – In California’s fire-prone landscapes, this talk will offer practical strategies for reducing fire risk while supporting biodiversity and creating a beautiful garden. Learn about defensible space, plant selection and placement, and ongoing maintenance. Learn more or sign up.
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San Diego Chapter of CNPS Show Garden – San Diego County Fair – June 11 through July 6, 11am to 10pm, Wednesdays through Sundays ($$ Fee - Fair Admission) – The San Diego Chapter of the CNPS is showcasing its Paws, Wings and Wild Things display garden to demonstrate how thoughtful design with native plants can create safe outdoor. Visitors will find pet-friendly design features, shaded seating, habitat-rich planting, and creative ideas for sharing space — from soft dog runs and cat zones to bird habitat and water features. Learn more.
Master Gardener Association of San Diego – Garden Walk (6 gardens) – Highlands Mobile Home Community, Santee – June 7, 1pm to 3pm – While attending this garden walk, get all your gardening questions answered by a UCCE certified Master Gardener. Topics include garden planning, watering, pest control, and anything garden related. Learn more.
The Water Conservation Garden – Free 2025 County Workshops – How to Hire a Landscaper and Save Money! with Ms. Smarty-Plants™ -- June 7, 10am to 12:30pm – Ms. Smarty-Plants gives an informative, common-sense approach to hiring a landscape professional. You’ll learn which questions to ask, how to properly plan, and receive money-saving tips too! Learn more and register.
University of California Cooperative Extension’s (UCCE) Integrated Pest Management (IPM) – The following workshops are being offered in June.
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Urban & Community Webinar Series – Cover, Smash, Trap: Nonchemical Methods for Pest Management – June 18, 12pm to 1pm – Learn how to manage pests without pesticides using nonchemical pest management practices as alternatives to pesticides in the home and garden. Learn more or register.
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Healthy Garden-Healthy Hybrid (in-person and Zoom) Community Workshops – June 21, 10am to 11:30am – Irrigation and Runoff Management - Learn about irrigation management including how to evaluate and improve your irrigation systems, avoid runoff and erosion issues, and how to customize your irrigation methods to fit your landscape. Offered in partnership with the County of San Diego. Site location: San Diego County Operations Center, 9335 Hazard Way, San Diego. Learn more or register.
Dos Valles Garden Club Plant Sale – Valley Center, June 21, 8am to 12pm – This event will be selling herbs, succulents, perennials, and more. Includes a garden and kitchen rummage sale and scavenger hunt for little gardeners. Learn more.
Landscape and Water-Savings Webinars – A series of landscape and water-savings webinars will be offered in June. Dates and times vary. All events will be virtual unless otherwise noted. Hosted by the Metropolitan Water District of Southern California. See calendar and learn more or register.
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Irrigation and Water Use Efficiency – June 5, 6pm to 7pm – Learn about irrigation systems, programming controllers, why to choose drip over spray, and easy ways to conserve water.
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Goodbye Grass, Hello Garden: Qualify for Rebates – June 17, 6pm to 7pm – Learn about replacing your lawn with a watershed-wise landscape, including removing turf without the use of chemicals, replacing it with climate-appropriate plantings, and how to apply for a turf replacement rebate.
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Drip Irrigation Essentials – June 19, 6pm to 7pm – Learn how to save your landscape by understanding soil moisture balance, key components of a properly installed drip system, typical problems with drip and how to avoid them, and developing a successful maintenance practice.
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After the Fires, Reviving a Landscape – June 18, 9am to 12pm – Learn how to plan for more fire-resistant landscapes and communities. Topics include why fires have become more urban, what happens after a massive fire, how to rebuild a more fire-resistant landscape (residential and commercial), and the importance of maintaining a good soil moisture balance. Co-sponsored by Southern California Gas Company. Learn more or register.
San Diego Botanic Garden Monthly SAPLinGS Sessions – Wednesdays, Thursdays, and Fridays in May, 10am to 12pm – Children are invited to join for Science, Art, and Play in Garden Spaces (SAPLinGS) activities. Topics vary by month and will focus on a different plant or nature-based theme. Science activities engage kids with cool hands-on learning that stimulates curiosity. Art activities focus on projects that spark the imagination. Learn more.
WaterSmart Residential Landscape and Irrigation Events – The San Diego County Water Authority’s WaterSmart Program is providing past recordings of 3-Hour Landscape Workshops. View past workshops.
County of San Diego – The following event will be provided in June.
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June 7, 1pm to 3pm – Opportunities To Reduce Costs and Compost Ag Waste – A demonstration of how the host ranch composts manure and orchard waste for onsite use, discussions on best management practices and potential return on investment, the workshop will also cover topics like plants for pollinators, nurturing habitats and more! Location: Rancho la Paz de mi Corazon 4113 North Mission Road Fallbrook, CA 92028. Learn more.
I Love A Clean San Diego (ILACSD) – The following waste reduction events will be provided in June.
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June 7, 8am to 12pm – Compost Giveaway at Sun Runner Lot – City of San Diego – Attend this free compost pick-up event for City of San Diego residents only. Site location: Sun Runner Lot/Seaworld Dr. and Pacific Highway. Sponsored by the City of San Diego Environmental Services Department. Learn more or register.
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June 7, 10am to 12pm – Slow Down Swap Party at Miramar Reservoir – Attend this free clothing swap to help divert fabrics from our local landfills and recirculate the back into the San Diego community. Sponsored by the City of San Diego Environmental Services Department. Learn more.
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June 22, 10am to 1pm – 10th Annual Sustainable Solutions Fair – City of Encinitas – Join ILACSD in partnership with the City of Encinitas for a unique celebration of all things sustainability! The event includes hands-on low waste DIY activities, a Q&A with a panel of regional experts, a clothing/home items Swap & Shop and donation drop off, an electronic waste recycling drive with Goodwill San Diego, and more. Site location: Encinitas Community Park. Learn more or register.
Solana Center for Environmental Innovation Waste Reduction Events – The following residential and business events will be offered in June.
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June 7, 10am to 11am – Green Living Tour ($5 suggested donation) – Learn how to live a more sustainable lifestyle with easy steps to address issues around water, waste, and soil health. You’ll see sustainability in action as you explore worm bins, grey water systems, innovative compost projects, a water-wise garden, and more. Learn more or register.
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June 7, 10am to 12pm – Backyard Composting Basics Workshop – San Diego – Learn the basics of traditional backyard composting including the benefits of composting, bin options, and how to build a compost pile. Funded by the City of San Diego Environmental Services. Site location and host College Area Community Garden. Learn more or register.
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June 14, 10am to 12pm – Landscaping for Watershed Pollution Prevention Panel – El Cajon – Learn how stormwater runoff can wash away topsoil that can pollute our waterways with sediment, chemicals, and nutrients. Also, how to combat these concerns whether in your small backyard or ranch. Topics discussed by this panel include mid-scale windrow composting, compost socks and blankets, water catchment basins, and more. Funded by the County of San Diego. Site location: Water Conservation Garden, El Cajon. Learn more or register.
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June 18 – Free E-Business Waste Pickup – A free monthly e-waste pick-up service is being offered to businesses in San Diego County. Register by Friday, June 13th for the Wednesday, June 18th pickup. Urban Corps will contact you to confirm pick-up. Offered in partnership with Urban Corps. Learn more or sign up.
County of San Diego Household Hazardous Waste and E-Waste Collection Event – Alpine – June 7, 9am to 2pm – Unincorporated residents are invited to properly dispose of household hazardous waste and electronic waste. Household hazardous waste includes, but is not limited to, batteries, cellphones, computers, printers, oils, paint, and more. No business waste, tires, medication, large appliances, and more allowed. Site location: Joan MacQueen Middle School, 2001 Tavern Road, Alpine. Learn more.
The Living Coast Discovery Center – The following composting events will be offered in June.
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8 de junio, de 11:30am a 12:30pm – Taller de Compostaje Bilingüe / Bilingual Composting Workshop (Dual-language event in English and Spanish) – Aprenda los conceptos básicos sobre cómo comenzar su propia pila de compostaje y convertir los desechos de alimentos en tierra rica en nutrients. Asista a estos talleres in situ, gratis con la entrada. También se encuentran disponibles talleres de video pregrabados. Patrocinado por la Ciudad de Chula Vista. Obtenga más información o regístrese.
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June 1, 8, 15, and 22, 11:30am to 12:30pm – Sunday Compost Workshops – Learn the basics on how to start your own compost pile by attending these on-site workshops. Pre-recorded Compost Workshop videos are also available. Sponsored by the City of Chula Vista. Learn more or sign up for the June 1st, 8th, 15th, and 22nd workshops.
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June 29, 11:30am to 12:30pm – Vermicomposting Workshop – Learn how to build and care for your own worm bin. Learn more or register.
Zero Waste San Diego San Diego Fix-It Clinics – Learn how to reduce waste by fixing things instead of throwing items away. Bring broken or non-working items for assessment, disassembly, and possible repair. Workspace, specialty tools, and guidance to help you take apart and troubleshoot your item will be provided. Clinics hosted by Zero Waste San Diego with the help of many other zero waste partners.
Alta Vista Botanical Garden – Kids in the Garden Classes – June 14, 10am to 12pm – ($5 fee, includes entry to the Garden) – Kids and their families are invited to attend Saturday classes featuring hands-on activities, conservation lessons, and tours of the gardens. Topics vary by month with June’s theme being Soil, Composting & Planting. Learn more or pre-register with Farmer Jones at farmerjonesavbg@gmail.com.
Cities of La Mesa and Lemon Grove – Free Household Hazardous Waste Disposal Event – June 14, 9am to 12:45pm – Residents of the Cities of La Mesa and Lemon Grove can dispose of their household hazardous waste such as batteries, fluorescent bulbs, electronics, paints/solvents, and more. Appointment and ID required. Learn more and schedule an appointment.
South Bay Sustainable Communities Network – Monthly Compost Pile Turnings – Various days, timeslots, and cities – Join South Bay Sustainable Communities Network for monthly turnings of their soil saver compost bins at select compost hub locations throughout South San Diego County. Compost hubs are also available to community members to drop off food scraps. Scroll to the bottom of home page to check calendar for hub locations and dates.
 San Dieguito River Valley Conservancy & San Diego River Park Joint Powers Authority – Valley Vibes Free Family-Friendly Community Event – June 1, 11am to 3pm – Attend this event for an engaging, hands-on experience featuring 14 partner organizations showcasing the San Dieguito watershed, local wildlife, outdoor skills, art, live music, and more. Site location: Sikes Adobe Historic Farmstead, Escondido. Learn more.
Escondido Creek Conservancy – Welcome to the Watershed Series, Let’s Hike Leomar Preserve! – June 7, 9am to 12pm – Attend to learn about the work the Conservancy is doing to protect special places throughout the Escondido Creek Watershed. Event may include a morning hike to showcase conservation plans to protect the area. Learn more by scrolling to the June 7 event or sign up.
Nature Collective – San Elijo Lagoon Discovery Tour – June 7, 10am to 11:30am – Get a guided tour of the salt marsh, mudflats and native plants of the San Elijo Lagoon. Learn more or reserve your spot.
Buena Vista Audubon – The following events will be offered in June.
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June 8, 11am to 12:30pm – Kids’ Nature Clubhouse and Trail Exploration – School-aged children and their families are invited to complete a nature-inspired craft and explore the lagoon trail with a different focus each month. The 1/2 hour trail adventure starts from the Nature Center at 11:00am.
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June 23, 10am to 11am – Preschool Nature Storytime – Join the Nature Center for nature-themed stories for preschool children, aged 2 ½ to 5 years. There will be a story, songs, fun craft, and special theme each month. Learn more.
Batiquitos Lagoon Foundation Speaker Series – Saving Our Waterways – June 14, 10am – Guest Speaker Navy McKee, CEO of Kai Pono Solutions, has invented a storm drain filtration device to work within the water infrastructure while also tracking flow rates, contaminates, and maintenance cycles. Come hear her vision. Learn more.
Center for Watershed Protection – 2025 Webcast Series: Webcast 5 – IDDE: From Detection to Prevention – Tracking Illicit Discharges – June 11, 1pm EDT ($159 fee non-member) – Learn how the Orange County Public Works IDDE (Illicit Discharge Detection and Elimination) team relies on teamwork and partnerships with local, state, and federal agencies to help prevent, detect, track, and respond to illicit discharges in Orange County, CA. Attendees will learn how the sharing of information, and the use of technology, assist with the prevention, detection, and response to illicit discharges on a regional scale. Note the time on the website is posted as Eastern Time. Scroll to webcast 5 to learn more or register.
Agua Hedionda Lagoon Foundation – The following programs will be offered in June.
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June 18, 5:30pm to 6:30pm – Adult Lecture Series – Eliminating Pollutants in Pest Control, Dan Hume. . Learn more.
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Daily program Monday through Friday, 7:30am to 5:30pm – Preschool Playdates Outdoor Program ($$ fees vary) – All children ages 3 to 5 are invited to join the daily program for nature-themed lessons and activities. Each day will include environmental education and literacy, a craft made from recycled materials, outdoor play, and more. You can register for individual days or the entire week. Early release options are available at 1pm, 3pm, and 4pm. Topics vary by month with the June topic being Sweet Summer. Learn more or register.
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Saturdays June through August, 9am to 10:30am – Summer Kids Club ($$ member fees vary) – This ‘members only’ program for kids in kindergarten through 5th grade is designed to nurture a deep appreciation for the wonders of nature, complete with engaging crafts to bring home. Each Saturday will highlight a different aspect of science, nature, or animals with the June topics being Animal Metamorphosis (6/7), Marine Biology (6/14), Going Hog Wild (6/21) and Bird Brains (6/28). Learn more to register and sign up to be a member.
Tijuana River National Estuarine Research Reserve (TRNERR) – Junior Rangers Program Ongoing Kids’ Educational Event – Saturdays 11am to 12pm – Kids aged 8 through 12 are invited to take part in discovering the rich heritage preserved in parks. They will participate in hands-on activities and can earn awards such as pins, certificates, and patches as they progress through the program! Learn more by clicking on the June 7th, 14th, 21st or 28th dates.
The Living Coast Discovery Center – Sweetwater Safari Hike Series – Saturdays, 11:30am to 12pm – Join the Center every Saturday to explore the Sweetwater Marsh Trail on the San Diego Bay National Wildlife Refuge. Here you will learn about the history of the Marsh, salt marsh ecosystem, plants, and wildlife thriving in this protected space. Learn more or sign up for the June 7th, 14th, 21st, and 28th hikes.
El Living Coast Discovery Center – Caminata Safari de Sweetwater Bilingüe – Los sábados de 11:30am a 12:30pm – ¡Acompáñenos todos los sábados a explorar el sendero de la marisma de Sweetwater en el refugio silvestre nacional de la bahía de San Diego! Aprenderemos sobre la historia de la marisma de Sweetwater, el ecosistema de la marisma salada, y las plantas y vida silvestre que prospera en este espacio protegido. Mochilas con actividades divertidas, incluyendo lupas y binoculares, serán disponibles para que las familias participantes lo usen mientras estén en la caminata. Obtenga más información o regístrese.
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