We’re All in This Together
It is a pleasure serving the 30,000-plus people who live, work, and play in Triunfo Water & Sanitation District’s (TWSD) service area. It’s our mission to be the best possible resource for our water and sanitation customers—while consistently delivering exceptional customer service.
Despite another year of severe drought, we reached many milestones in 2022. We moved into our brand-new offices and have been able to work together with our valued customers to conserve water in new and smarter ways—helping to ensure a brighter future.
The future is undoubtedly bright. The Las Virgenes-Triunfo Joint Powers Authority (JPA) continues its tireless efforts to provide customers of the Las Virgenes-Triunfo service area with access to a renewable, affordable, and sustainable source of water via the groundbreaking Pure Water Project.
We thank our customers and residents for their ongoing efforts to conserve water. While we all hope for rain, snow-packed Sierras, and the overall easing of drought, we must also prepare for continual dry conditions moving forward. It’s going to take a strong team effort from all of us!
Get the latest news about water use restrictions, conservation tips, and available rebates.
Triunfo Transitions to New Office Location
In 2020, TWSD’s board voted to transition from being a contract services-operated district to an independent agency, bringing all services in-house and moving its offices to within its service area. In 2022, Triunfo Water & Sanitation District officially moved its administrative and customer service offices to Westlake Village.
“As an independent agency, we now have the flexibility to better address the unique needs of the communities we serve,” says Leon Shapiro, TWSD Board of Directors Chairperson for 2022.
We now move forward confidently into 2023—eager to celebrate our 60th anniversary with all of you!
Our new address is:
370 North Westlake Blvd., Suite 100
Westlake Village, CA 91362
Business hours are 8:00 a.m. to 5:00 p.m., Monday through Friday.
Triunfo’s 2022 Drought and Conservation Response
Directors approved restricting outdoor water usage by TWSD customers to one day per week, effective June 1, 2022. This is in response to MWD’s directive to cities and districts that receive their water supply from the State Water Project. READ MORE
In September 2022, the TWSD Board of Directors approved reducing the once-a-week sprinkler irrigation time from 15 to 10 minutes per water station, as required by the Metropolitan Water District. READ MORE
TWSD reminds customers that free recycled water is available through the Las Virgenes-Triunfo Recycled Water Fill Station in Calabasas. READ MORE
Community Connections

Artwork by Delilah Bovatsek, a second grader at Brookside Elementary School in Oak Park, was selected by the Metropolitan Water District of Southern California (MWD) to appear in its 2023 print calendar and digital library. Click on the image to read more!
Water Smart Summer Classes
Proving that it can be fun to learn about ways to be water smart, in 2022, TWSD held four free summertime sessions to help customers maximize every drop of their outdoor water use. Certified instructors from the Master Gardeners of Ventura covered subjects such as lawn replacement alternatives, California natives, fire- and water-smart landscaping, drought-tolerant gardening, design, and maintenance.
Getting Social
Every hour is social hour now. In 2022, TWSD continued to expand its outreach through social media—including Facebook, Twitter, and LinkedIn. Just like its monthly e-newsletter, TWSD uses its social media channels to share information like water use updates, conservation tips, sewer health guidelines, news, and more. Let’s Connect!
2023 TWSD Board of Directors
Jane Nye, Chair
Janna Orkney, Vice Chair
Leon Shapiro, Director
James Wall, Director
Raymond Tjulander, Director
How to Contact Us
Water Service 800-613-0901
Sewer Service 805-658-4690
Clerk of the Board 805-658-4602
Administration 818-889-8996
Emergencies (24/7) 805-389-9406
The mission of Triunfo Water & Sanitation District is to meet current and future needs of our customers by providing potable water, recycled water, and wastewater services. We are committed to providing services that are reliable, high quality, cost efficient, and delivered in a customer-friendly manner. The District will judiciously manage its assets and finances, effectively plan for future needs, protect the environment, and work to maintain public trust and confidence. TWSD serves east Ventura County, including Oak Park, Lake Sherwood, Bell Canyon, and the Westlake Village and North Ranch portions of Thousand Oaks.
Moving Forward into the New Year
We’re Turning 60 in 2023!
It’s hard to imagine that we have been serving our region for six decades! Originally established as Triunfo County Sanitation District in 1963, TWSD has made great strides in the years since.
- In 1964, TWSD and Las Virgenes Municipal Water District (LVMWD) launched the Las Virgenes-Triunfo Joint Powers Authority (JPA) to better manage water resources in the included service area.
- In 1993, TWSD expanded its operations to include potable water service by purchasing Metropolitan Development’s Metropolitan Water Company, located within the District’s Oak Park service area.
- In 2017, TWSD expanded its recycled water service for irrigation of parks, schoolyards, homeowner association landscapes, and roadway greenbelts–and increased its operating efficiency–by purchasing Calleguas Municipal Water District’s recycled water system.
- Today, TWSD provides water to over 14,000 people as well as sanitation and state-of-the-art water treatment services for approximately 30,000 customers whose fees are part of their property tax.
TWSD is more prepared and motivated than ever to provide each of its valued customers with clean water, reliable sewer services, and, as always, superior customer service.
Join us throughout 2023 as we celebrate this milestone birthday!
Sign up for our e-newseltter to stay updated on TWSD news!
Schedule YOUR 2023 Tour of the Pure Water Demonstration Facility!
The JPA invites valued customers and community partners to taste its advanced purified recycled water. During this insightful tour, you’ll also learn how the Pure Water Project represents the first sustainable water source for our region—while also maintaining the JPA’s commitment to environmental stewardship of the Malibu Creek Watershed.
LVMWD staff will be on-site to help answer questions about the new facility and the advanced water treatment process that takes place on the premises.
Learn more about the Pure Water Project, schedule your in-person tour today, or watch a video tour anytime!
Get FREE Soil Amendments through the Community Compost Program
For more than 20 years, the JPA’s Rancho Las Virgenes Composting Facility has converted wastewater biosolids into a safe, useful, and nutrient-rich soil amendment. Our compost has earned a “Class A, Exceptional Quality” rating from the U.S. Environmental Protection Agency.
Best of all, it’s available to the public free of charge through the Community Compost Program.