Residential Bill Calculator
Use our estimator to compare your bill at Stage 1 water shortage rates and Normal rates. Stage 1 rates were in effect November 1, 2015, through May 31, 2017, due to water shortage conditions. Normal rates (in Table B below the calculator), are in effect as of June 1, 2017, due to improved water supplies.
Be aware: the more water you use, the higher your bill. Compare your past and current water use on Aquahawk.
Look at your water bill (see sample on right) to determine how much water you use in a two-month billing period.
Enter it here units
(one unit is 748 gallons)
|Look up your bimonthly water consumption. This figure is located on the bottom left corner of your bill.
This customer used 11 units (which equals 8,228 gallons).
Questions about your bill?
Phone: (925) 875-8524
|Step 2|| Check if you pay the Power Charge.
"Power charge for pumping" appears as a separate line on your bill and applies to service locations where water must be pumped due to elevation.
|Step 3|| Check if you are enrolled in Low Income Assistance
|Fixed Service Charge||$|
|Zone 7 Charge||$|
|Low Income Credit||$|
The Zone 7 Water Agency, the District's water wholesale supplier, adopted new water rates on Oct. 17, 2018. The "Zone 7 Cost of Water" rate on your bill increased from $2.99 per unit to $3.48 per unit (1 unit = 748 gallons) effective Jan. 1, 2019. DSRSD passes through the cost of water purchased from Zone 7, charging customers based on the volume of water they consume.
DSRSD customers receive six water bills per year, one every other month. Your bill is a combination of consumption charges (based on the amount of water used) and fixed charges (the same on every bill). Your bill is the sum of applicable charges in Table A + Table B + Table C.
Table A – Consumption Charges for the Cost of Water and Power
These volume-based charges cover the cost of potable water purchased from Zone 7, power, and recycled water.
|Rate per Unit|
|Zone 7 Cost of Water (applies to all potable water customers)||$3.48|
|Power Charge (applies only to service locations where water must be pumped due to elevation)||$0.28|
|Recycled Water (covers production and distribution)||$4.57|
Table B – Consumption Charges for Potable Water Distribution
The District charges to distribute water to your address and maintain the water system. When the District declares a water shortage, rates increase in stages to encourage conservation and recover revenue needed to operate the water system with declining water sales. (Learn more about why water bills often go up in droughts, based on research by the Public Policy Institute of California.)
||Rate per Unit|
|Normal||Water Shortage Conditions|
|Stage 1||Stage 2||Stage 3||Stage 4|
|Target Reduction Goal||0%||10%||20%||35%||50%|
|Tier 1 (1-10 units)||$0.57||$0.61||$0.72||$1.00||$1.47|
|Tier 2 (11-34 units)||$1.20||$1.44||$1.87||$2.41||$3.91|
|Tier 3 (over 34 units)||$1.60||$1.99||$3.14||$4.49||$6.19|
|Commercial Customers (includes Industrial, Multi-Family and Institutional)|
|Winter (Nov-Apr) – all units||$1.15||$1.19||$1.38||$1.74||$2.19|
|Summer (May-Oct) – all units||$1.38||$1.53||$1.92||$2.42||$3.45|
|Potable Irrigation Customers|
|Recycled Water Customers (See Table A)|
Table C – Fixed Charges for All Customers
All water customers pay a bimonthly fixed charge based on meter size. Most of the costs to operate the water system do not vary with the amount of water used. Revenue that is predictable throughout the year stabilizes rates and improves the District's credit rating, thereby reducing the cost of future borrowing.
|Meter Size||Bi Monthly Fixed Charge|
In addition to any rate increases adopted by Zone 7 Water Agency, water rates generally increase each year on Jan. 1 based on the annual change in the Consumer Price Index (CPI, All Urban Consumers for San Francisco-Oakland-Hayward). However, DSRSD did not have a CPI increase for January 2019.
The DSRSD Board of Directors may change rates at other times as a result of rate studies or other factors. DSRSD notifies customers when rate changes are proposed, as required by Proposition 218. Customers are encouraged to attend public meetings regarding rate changes and submit written comments. For more information on Proposition 218, see the following guides:
- League of California Cities Proposition 218 Implementation Guide
- California Legislative Analyst's Office: Understanding Proposition 218
Revised: March 7, 2019