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Water Service

Potable Water Distribution System

Triunfo Water & Sanitation District supplies 2.6 million gallons of potable water daily to more than 14,000 people in the community of Oak Park. Our water distribution system consists of four storage reservoirs, five pumping stations, and 54 miles of pipeline. Triunfo purchases 100% of its water from northern California via the California State Water Project. Triunfo’s potable water service features system-wide automated water meters. Installed in 2015, these state-of-the-art devices have significantly improved meter accuracy. Additionally, customers can monitor their water use and set alarms to warn of excessive consumption.

Read more about Stage 1 Conservation |  Read more about outdoor watering | FAQS

Customer Service

To ask about your water service, call (800) 613-0901 or email us.

For 24-hour emergency service, call (805) 389-9406.

Customer Portal Instructions

Payment Options

Need to pay your water bill?

We offer several options:

  • Online payment by credit card, debit card, or e-check
  • Online payment by PayPal, PayPal Credit, Venmo, or Amazon Pay
  • Phone payment by credit card, debit card, or e-check
  • Automatic debit from your checking account
  • Payment by mail or in person at our office

Online Payment*

Use the links below to make a one-time payment, schedule recurring payments, or setup/access your online account.

Payment By Phone*

To make an automated payment by telephone call toll-free (866) 899-3107.

*These services are provided through Paymentus Corporation, a third-party automated payment service that accepts Visa, MasterCard, Discover, and Electronic Check (eCheck). Payments made after 4:00 p.m. may not be posted to your account for up to two business days.

To use these services, you will need:

  • Your Account number from your water bill
  • Your street address number
  • Your credit/debit card number or check routing information
  • Your email address for a confirmation receipt (online payment only)

Mail or In-Person Payment

Triunfo Water & Sanitation District office:
370 N. Westlake Blvd., Suite 100
Westlake Village, CA 91362

Helpful Documents and Forms

Please use the links below to find helpful documents and forms.

Water Services Helpful Forms

Recycled Water

In addition to potable water service, Triunfo Water & Sanitation District supplies about 2 million gallons of recycled water each day (more than 2,200 acre-feet per year) for irrigation of public spaces such as parks and school grounds, homeowner association landscapes, golf courses, and roadway greenbelts. The recycled water is produced at the Tapia Water Reclamation Facility and conveyed through Triunfo’s service area through 10 miles of pipeline, a pumping station, and a storage reservoir.

As a drought response measure, the Las Virgenes-Triunfo Joint Powers Authority is making FREE recycled water available to qualified residential customers at its recycled water fill station in Calabasas. Click here for information.