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Starting 12/1/23, Customer Service Hours CHANGED

Effective December 1, 2023: Triunfo Water & Sanitation District’s Customer Service Office will be CLOSED FOR LUNCH, Monday-Friday.

NEW CUSTOMER SERVICE HOURS

OPEN Monday-Friday:
8:00am-12:00pm
1:30pm-5:00pm
CLOSED for lunch: 12:00pm-1:30pm

Location:
370 N. Westlake Blvd., Ste. 100
Westlake Village, CA 91362
Directions

PHONE NUMBERS

Water Service
Billing questions, customer service
(800) 613-0901

Sewer Service
New construction, connections, tenant improvements, easements
(805) 658-4690

General Inquiries/Board
Board of directors inquiries, meeting agendas, general inquiries
(818) 889-8996

Triunfo Water & Sanitation District office building with updated customer service hours starting 12/.

Recent News

TWSD Board Vacancy – Notice & Application – June-July 2026
June 10, 2026
The Triunfo Water & Sanitation District (TWSD) Board of Directors intends to appoint a District resident to fill the vacancy left by Ray Tjulander effective...
Board Member Ray Tjulander Steps Down After 9 Years
June 10, 2026

After nine years as a member of the Triunfo Water and Sanitation District Board, Ray Tjulander announced he is stepping down effective June 25, 2026.

Reminder to Water Customers: Create your New Customer Bill Pay Portal Account
February 25, 2026
LATE FEE NOTICE: Your account may have been charged a late fee in February. We observed an unusually high number of late fees in February....
Triunfo Water & Sanitation District 2025 Year in Review
February 5, 2026
Message from the Board Chair As we close out another year at Triunfo Water & Sanitation District, I want to take a moment to reflect...