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Triunfo Water & Sanitation District

We provide sewage collection and treatment services, supply potable water, and treat and sell recycled water. We serve more than 30,000 people in east Ventura County, including Oak Park, Lake Sherwood, Bell Canyon, and the Westlake Village and North Ranch portions of Thousand Oaks.

What's the Latest

Calleguas Interconnection Project

Get traffic and construction updates for the Kanan/Lindero area. This project will improve water safety and reliability for you!

BOARD VACANCY - NOTICE & APPLICATION

TWSD Board of Directors plans to appoint a resident of the District to fill a Board vacanc. Applicants must live within the TWSD service area.

DEADLINE TO APPLY: March 9, 2024

Triunfo Hours & Closures:

Offices are closed Monday, February 19 in observance of Presidents Day.

Customer service hours: M-F, 8:00am-12:00pm, 1:30pm-5:00pm

Emergency line available 24/7: (805) 389-9406

Urban Water Management Plan

Triunfo's Urban Water Management Plan provides details on the District's sources of supply, water use history and targets, and drought response measures.

An innovative solution to regulatory challenges that will help ensure a reliable long-term local water supply.

Customer Assistance

Eligible water customers can receive a $15 discount on their monthly water bill.

Wastewater customers can receive a $180 discount on their annual wastewater service. Open to eligible property owners. Deadline is May 1, 2024.

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Water News

Stay in the loop with news, events, conservation tips and more!

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Triunfo News

TWSD Board Vacancy – Notice & Application – 2024

February 6, 2024
Triunfo Water & Sanitation District (TWSD) Board of Directors plans to appoint a resident of the District to fill a Board vacancy. SEE NOTICE for complete information. To be eligible to serve on the Board, a person must be registered to vote and must reside within... Read More

Triunfo Water & Sanitation District 2023 Year in Review

January 30, 2024
As we close our year, 2023 Chair of the Triunfo Water & Sanitation District Jane Nye shares her thoughts. 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 goal to... Read More

Board Member Janna Orkney Steps Down

January 30, 2024

After 17 years as a member of the Triunfo Water and Sanitation District (TWSD) Board of Directors and its current board chair, Janna Orkney announced she is stepping down effective January 29, 2024. “TWSD is more efficient, financially sound, and forward-thinking because of Janna’s leadership,”…

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Artwork by Oak Park Sixth Grader Selected to Appear in 2024 Calendar

December 20, 2023

December 20, 2023 — Artwork by 11-year-old Jessica Joel, a sixth grader at Medea Creek Middle School in Oak Park, was selected by the Metropolitan Water District of Southern California (MWD) to appear in its 2024 Water Calendar and digital library. MWD provides water to…

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Conservation Rebates

SAVE WATER, SAVE MONEY!

Apply for cash rebates on purchases of approved water conservation appliances and devices like:

    • Toilets
    • Washers
    • Irrigation Controllers
    • Soil Sensors
    • Rain Barrels and more!

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Become a pro at water conservation with our

AUTOMATED METER SYSTEM

    • Our Automated Meter System shows your water use in present time.

    • Gives you full data and analytics to track and analyze your water usage.

    • Set up notification limits on your water usage.

    • Be notified if you might have a leak.

 

My Water Account

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Bill Pay

Triunfo Water & Sanitation District offers you a variety of convenient ways to pay your water bill by mail, phone, or online.

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Water Usage

Manage your water usage with up-to-date information on consumption history by month, day, or hour.

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Water Rates

Fees for potable and recycled water include a monthly service charge (based on meter size) and quantity rates.

Be Water Wise!

Triunfo Water & Sanitation District is committed to the wise use of water. This includes promoting conservation among our customers through usage guidelines, valuable incentives, and public education. Find out how you can help support your community by conserving water!

Be Water Wise!

Triunfo Water & Sanitation District is committed to the wise use of water. This includes promoting conservation among our customers through usage guidelines, valuable incentives, and public education. Find out how you can help support your community by conserving water!

Quick Links

Access current and archived Board meeting agenda packets.

Catch up on the latest news from Triunfo Water & Sanitation District.

Review the District's 2020 UWMP adopted October 25, 2021.

Event Calendar