Water Rate Changes

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New Water Rates

We've all done well to cut back on water use, but ongoing drought has brought about a new normal in California that requires more efficient water use at all times. This has a direct impact on the City of Corona, and the revenues collected for water services. The City of Corona Department of Water and Power (DWP) has received City Council approval of several changes to help ensure sufficient revenues are collected to guarantee a fully financed, operational water utility: 

  • Changes to your water budget to help promote further water conservation; 
  • A rate increase for water use (commodity) and fixed charges; 
  • Annual increases for the next five years of 5% each year; and 
  • A temporary revenue stability charge that becomes effective when in Conservation Stage 3 or higher. 

The proposed rates became effective in February 2020.


Water Budget Changes & Rate Impacts – Bill Calculator

Want to see what your new water bill could look like? Click here to view a Water Bill Calculator.


Corona DWP held Community Meetings on the following dates:

 Wednesday, Oct. 23, 2019  7 to 8 p.m. Temescal Desalter (745 Public Safety Way)
 Saturday, Nov. 2, 2019*  9 to 10 a.m.  Corona City Hall Council Chamber (400 S. Vicentia Ave)
 Thursday, Nov. 21, 2019  7 to 8 p.m. Temescal Desalter (745 Public Safety Way)
 Thursday, Dec. 12, 2019  7 to 8 p.m. Temescal Desalter (745 Public Safety Way)

*Event will be shown on Facebook Live via the City of Corona's Facebook Page


Corona DWP held Free DWP Facility Tours on the following dates:

Attending a facility tour is a great way for residents and business owners to learn about what it takes to provide safe, clean and affordable drinking water to our community. Adults only please.

Temescal Desalter (745 Public Safety Way)
 Saturday, Oct. 26, 2019  8 a.m. to 12 p.m. Temescal Desalter (745 Public Safety Way)
 Saturday, Nov. 16, 2019  8 a.m. to 12 p.m. Temescal Desalter (745 Public Safety Way)
 Saturday, Dec. 7, 2019  8 a.m. to 12 p.m. Temescal Desalter (745 Public Safety Way)
 Saturday, Jan. 18, 2020  8 a.m. to 12 p.m. Temescal Desalter (745 Public Safety Way)

Click here to register for a Free DWP Facility Tour!


Water and Reclaimed Water Rate Study Presentation

On October 19, 2019, Corona Department of Water and Power General Manager, Tom Moody, presented an overview of a Water and Reclaimed Water Rate Study. Click here to watch the online video presentation. To view the presentation in a PDF format, click here. 


The Department of Water and Power is audited annually as part of the Citywide Comprehensive Annual Financial Reports (CAFR).  These reports are available on the City’s website here 

June 30, 2013: Component Unit Financial Statements and Independent Auditor's Report
April 6, 2016: Request for City Council Action and Corona Utility Authority Action
Corona Utility Authority Audits:
2007   2008   2009    2010   2011   2012   2013



What is the reason for the increase?

DWP is funded through revenue from water charges. By law, DWP can only collect enough funds for the cost to provide water service. In order to provide 24 hour a day, 7 day a week water service, all facilities must be in proper working order. DWP must also plan for the eventual replacement of infrastructure such as pipes and pumps. Stricter regulatory requirements also require additional monitoring activities and treatment. 

DWP charges a fixed Ready-to-Serve (RTS) Charge and a charge for the amount of water used (commodity). In times of reduced water use, as seen over the past several years due to drought and state-mandated water use cutbacks, DWP is not able to collect enough revenue to cover its fixed expenses. While less water is sold, much of DWP’s costs remain. Operating and maintenance costs of the City’s water system remain constant, no matter how much water is used. This is true for many expenses, including customer service costs, regulatory testing, and meter reading services. 

What are the changes in the Water Budget Formula?

DWP proposed changes to the way your water budget is calculated. The changes encourage increased water efficiency both indoors and outdoors. The changes are based on efficiency standards set by the State of California. The changes provide a larger cushion in Tiers 3 and 4 before moving into the highest tier. 

budget factor

What are the water rates?

 ready to serve

What are the Commodity Use Charges?


Click here to read more Frequently Asked Questions.

We are happy to help answer your questions at your convenience. Please feel free to contact us at (951) 736-2321 or by email at


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