Welcome to Moulton Niguel Water District!

Moulton Niguel Water District delivers high-quality drinking water, recycled water and wastewater services to more than 170,000 customers in Laguna Niguel, Aliso Viejo, Mission Viejo, Laguna Hills, Dana Point, and San Juan Capistrano. A leader in conservation and environmental protection, Moulton Niguel maintains the lowest average water bill in South Orange County.


Resilient Together

Moulton Niguel Water District has partnered with customers over the years to implement water efficiencies that have made us resilient. Because of the District’s innovative programs and investment in those programs, it is well-positioned to provide safe, reliable water to its customers even in challenging times. But, we can do more. From water-efficient tips to rebates and workshops, find information on how to make every drop count.

Crown Valley Pipeline Replacement Project

Moulton Niguel will replace 2 miles of water transmission pipeline and sewer pipeline beneath Crown Valley Parkway, between Camino Del Avion and Hillgurst Drive. The new pipelines are essential to ensure safe and reliable water and sewer service to local homes and businesses.

Start: September 2023
Estimated Completion: Spring 2025
Location: Crown Valley Parkway, between Camino Del Avion & Hillhurst Drive
Expected Traffic Delays: Monday – Friday l 9am – 3pm

Deep Dive Virtual Form

Learn about where our water comes from!

Are you interested in learning about where our water comes from? Take a “Deep Dive” with us as we cover the following topics in our virtual Community Forum!

  • A tour of our water’s journey from the mountains in Colorado and the High Sierras to customers’ taps
  • How our water is treated regionally and locally so it is safe to drink
  • How we plan for the future to ensure water reliability and sustainability

School’s out for summer!

Check out our online education center for activities for the entire family including:

  • Educational Videos
  • Word Searches
  • Interactive Games
  • Activities
Earn Rebates

Earn Rebates

Learn how you can qualify for water efficiency rebates.

Understanding Your Water Budget

Your monthly statement contains information to help you understand your water use.

Water Budget

High-Quality Water

Lowest Average Bill in
South Orange County