Modesto City Water
The City of Modesto Water provides water for about 214,181 residents living in the Modesto area. Established in 1870, the City of Modesto Water collects approximately 43% from local groundwater wells and 57% from the surface water treatment plant at Modesto Reservoir, constructed in partnership with the Modesto Irrigation District (MID).
Modesto City Drinking Water Quality
Consumer Confidence Water Quality Reports
Under the authority of the Safe Drinking Water Act, the EPA requires Modesto City Water 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 Modesto City main water system here:
Contact Modesto City Water Customer Service
Have a Question, Issue or Comment?
Main Customer Service
209-342-2246 (Mon–Fri, 8:30 AM–4:30 PM)
Emergency (24 hours - broken water main or pipeline, etc.)
Pay Your City of Modesto Water Bill
Already have an account?
If you already have an account, you just need to login to the City of Modesto Water site. City of Modesto 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 City of Modesto 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 Water Service
Starting Your Service
When you move to a new home in Modesto City, you'll most likely already have running water, but you'll still need to set up water service with the City of Modesto Water. Luckily, 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 Modesto City, you'll need to stop your water service with the City of Modesto Water, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.