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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

JOIN THE TWSD E-LIST

Monthly community newsletter, as well as alerts and special news.

Also join @triunfowsd on Facebook, X, LinkedIn and NextDoor!

TWSD CALENDAR

Check the calendar for office closures, board meetings, events and more.

You can also download this year's closure calendar!

PURE WATER PROJECT

Construction on the Las Virgenes - Triunfo JPA Pure Water Project  is underway.

All the work to come will deliver our fist local source of water.

Video Transcript

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. 

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Water News

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

Triunfo News

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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

WATER SERVICE CUSTOMER PORTAL

    • Triunfo's customer portal 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

High-quality water treatment facility at Triunfo Water & Sanitation District.

Bill Pay

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

Water pressure gauge on a water utility meter at Triunfo Water & Sanitation District.

Water Usage

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

Water utility growth chart with upward trend and dollar sign icon.

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

Event Calendar