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Contact Us OPWS

Wastewater Service

New construction, connections,

tenant improvements, easements

(805) 658-4690

Water Services

Billing questions,

customer service

(800) 613-0901 or by email at This email address is being protected from spambots. You need JavaScript enabled to view it..

Board of Directors

Meeting agendas, general inquiries

(805) 658-4642 or (818) 889-8996

Public Affairs

Media relations, public outreach

(805) 658-4608

Emergency Service

For water or sewer emergencies, 24 hours a day, seven days a week, call 805-389-9406. Triunfo Sanitation District and Oak Park Water Service participate in Ventura County’s “VC Alert” Program for rapid telephone notification of emergency situations.To sign up for the notification program, visit

Send Us an Email

Triunfo Sanitation District provides water and wastewater services under contract with Ventura Regional Sanitation District.

1001 Partridge Drive, Suite 150

Ventura, CA 93003