Mesa Water District
The Mesa Water District (Mesa Water®) is an independent special district, which provides water for about 110,000 residents living in most of Costa Mesa areas, including John Wayne Airport. Established in 1965, the Mesa Water District collects water from Orange County’s natural underground reservoir, via Mesa Water’s seven wells. Whenever needed, Mesa Water supplements its ground water supply by collecting from the Mesa Water Reliability Facility (MWRF), or by imported water from the Municipal Water District of Orange County (MWDOC).
Costa Mesa Drinking Water Quality
Consumer Confidence Water Quality Reports
Under the authority of the Safe Drinking Water Act, the EPA requires Mesa Water District to assess local water quality each year and distribute a Consumer Confidence Water Quality Report.
The information in this report includes the source of your water, whether your water meets EPA standards, detailed tables of detected contaminants, detailed descriptions of those contaminants, possible reasons why they're present, and potential health effects (if any).
Read the Consumer Confidence Report for Costa Mesa main water system here:
Contact Mesa Water District Customer Service
Have a Question, Issue or Comment?
Main Customer Service
949-631-1200 (Mon–Fri, 7:30 AM–5:00 PM)
No email provided. Please visit the contact form. https://www.mesawater.org/contact/customer-service
Emergency (24 hours - broken water main or pipeline, etc.)
Pay Your Mesa Water Bill
Already have an account?
If you already have an account, you just need to login to the Mesa Water site. Mesa Water accepts credit cards, debit, and direct deposit. Click here to login.
Want to create a new account?
You can create a new account on the Mesa Water website. Once you create the account, you can setup payment with credit, debit, or direct deposit. Click here to create an account.
Want to pay without an account?
You can make a one-time payment without creating an account. You will need to have your credit or debit card in order to make the one time payment. Click here to make a one time payment.
How to Start Costa Mesa City Water Service
Starting Your Service
When you move to a new home in Costa Mesa, you'll most likely already have running water, but you'll still need to set up water service with the Mesa Water. Luckily, Costa Mesa City has made it pretty simple with the following online form. Starting service generally takes just two business days.
Stopping Your Service
When you move out of a home in Costa Mesa, you'll need to stop your water service with the Mesa Water, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.