Water Usage Rates & Charges

Residential water rates, effective July 1, 2026

Tier	% of monthly water budget	Rates per CCF*
Low Volume	0-40%	$2.18
Base	41-100%	$2.92
Inefficient	101%-140%	$8.03
Wasteful	141%+	$19.32
View details

Residential sewage rates, effective July 1, 2026

Usage	Rates
Average water usage exceeds 10 CCFs per month	$44.60
Average water usage falls between 5 and 10 CCFs	$38.10
Average water usage falls below 5 CCFs	$29.85
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Landscape irrigation potable and recycled water rates, effective July 1, 2026

Tier	% of monthly water budget	Rates per CCF
Low Volume	0-40%	$2.18 (potable) $1.45 (recycled)
Base	41-100%	$2.92 (potable) $2.37 (recycled)
Inefficient	101%-140%	$8.03 (potable) $5.78 (recycled)
Wasteful	141%+	$19.30 (potable) $10.46 (recycled)
View details

Commercial / industrial / public authority / nonresidential mixed-use potable and recycled water rates, effective July 1, 2026

Tier	% of monthly water budget	Rates per CCF
Base	0%-100%	$2.92 potable $2.37 recycled
Wasteful	101%+	$19.32 potable $10.46 recycled
View details

Agricultural and other rates, effective July 1, 2026

Connection type	Rates per CCF
Agricultural potable water rates	$4.14
Recycled water used for agricultural purposes	$2.09
View details

*1 CCF = 748 gallons

Water bill calculator

Use our rate calculator to estimate your bill and learn how saving water helps keep your rates low.

Understanding the budget-based rate structure

IRWD uses a budget-based water rate structure. How much you are charged for the water you use depends on whether you stay within your monthly budget.

Residential and landscape water customers are billed according to four rate tiers:

Low Volume: Using up to 40% of your monthly water budget.
Base: Using 41% to 100% of your monthly water budget.
Inefficient: Using 101% to 140% of your monthly water budget.
Wasteful: Using 141% or over of your monthly water budget.

Low Volume and Base rates are considered waste use within your monthly budget, while Inefficient and Wasteful are considered water use over your monthly budget.

Commercial customers are billed based on a similar structure, but with two tiers: