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May 25, 2024 11:40PM
May 25, 2024 23:40PM
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WSCP rates

Water Shortage Contingency Plan (WSCP)
IRWD is required by the California Water Code Section 10632 to prepare and adopt a Water Shortage Contingency Plan (WSCP) as part of its Urban Water Management Plan. The WSCP, adopted by IRWD on June 28, 2021, includes requirements to implement locally appropriate water shortage response actions for six standard water shortage levels. The following are the rates proposed as a potential response action for each water shortage level. These rates are based on the actual cost to provide service to our customers in times of water shortage. For a detailed explanation, please refer to the District’s WSCP at bit.ly/wscp-2021. An overview of the supply shortage response actions considered for each level of water shortage can be found on Page 33, Table 3-3 of the WSCP. Achieving the WSCP reductions for each level will require a broad approach. The table below includes the target water use reduction for each level, the minimum water budget provided at each level and the steps necessary to meet the water shortage at each level.

Minimum water budgets at each level of water shortage:

Water Shortage Contingency Plan level

Target reduction

(Midpoint of the level) 

Messaging and outreach 

Outdoor potable landscape (Includes residential, dedicated irrigation and commercial outdoor) 

ET factor 

Indoor gallons per capita

Potable Commercial, Industrial and Institutional (CII) percent indoor reduction

2022 & 2023 projected water shortage (Assuming five consecutive years of drought)

Normal/ nonshortage water budget

0

Water efficiency programs and outreach

40% drought-tolerant plants

.75

50

0%

No water shortage;

100% reliable

Level 1
0-10%

5%

2,500 AF

Expanded messaging and targeted outreach

40% drought-tolerant plants

.75

50

0%

No water shortage;

100% reliable

Level 2
11-20%

15%

7,700 AF

Expanded messaging and targeted outreach

No turf;

100% drought-tolerant plants

.625

50

0%

No water shortage;

100% reliable

Level 3

21-30%

25%

12,800 AF

Expanded messaging and targeted outreach

No turf;

tree health affected; 75% native plants;

25% drought-tolerant plants

.35

40

0%

No water shortage;

100% reliable

Level 4

31-40%

35%

18,000 AF

Expanded messaging and targeted outreach

No turf;

tree health affected; 100% native plants

only

.25

32.5

10%

No water shortage;

100% reliable

Level 5

41-50%

45%

23,000 AF

Expanded messaging and targeted outreach

No landscape

0

30

20%

No water shortage;

100% reliable

Level 6

51%+

55%

28,200 AF

Expanded messaging and targeted outreach

No landscape

0

Basic needs only; 20

30%

No water shortage;

100% reliable

How a water shortage could affect rates
If IRWD experiences a water shortage, IRWD may be required to implement water shortage response actions that would include possible water rate increases, due to changes in costs to provide customers with water during a shortage. The water rates at each water shortage level are shown in the following table. The water shortage contingency rates would only be charged to potable customers depending on the level and duration of the water shortage as defined in the WSCP, and only when conditions declared by IRWD’s Board of Directors are met. Customers will receive communication of when these conditions have been met and when the water shortage contingency rates are being charged.

Proposed water shortage contingency rates for FY 2023-24 per CCF*

Rate tiers

Proposed FY 2023-24

Level 1: up to 10% water shortage

Level 2: 11% to 20% water shortage

Level 3: 21% to 30% water shortage

Level 4: 31% to 40% water shortage

Level 5: 41% to 50% water shortage

Level 6: greater than 50% water shortage

Low Volume

$1.75

$1.76

$1.76

$1.77

$1.78

$1.79

$1.82

Base Rate

$2.52

$2.59

$2.69

$2.79

$2.95

$3.24

$3.64

Inefficient

$6.25

$6.41

$6.68

$6.81

$6.92

$7.50

$8.49

Wasteful

$15.49

$16.28

$17.07

$17.98

$19.09

$21.25

$24.30

*1 CCF = 478 gallons
Commercial customer rate tiers are Base Rate and Wasteful. 

Proposed water shortage contingency rates for FY 2024-25 per CCF*

Rate tiers

Proposed FY 2024-25

Level 1: up to 10% water shortage

Level 2: 11% to 20% water shortage

Level 3: 21% to 30% water shortage

Level 4: 31% to 40% water shortage

Level 5: 41% to 50% water shortage

Level 6: greater than 50% water shortage

Low Volume

$1.99

$1.99

$2.00

$2.00

$2.01

$2.02

$2.05

Base Rate

$2.65

$2.72

$2.84

$2.94

$3.11

$3.41

$3.79

Inefficient

$6.55

$6.64

$6.71

$6.79

$6.89

$7.39

$8.32

Wasteful

$16.46

$17.14

$17.94

$18.84

$19.90

$22.00

$24.97

*1 CCF = 478 gallons
Commercial customer rate tiers are Base Rate and Wasteful. 

 

 

To use the WSCP budget-based-rate calculator, visit wscprates.IRWD.com.