Padre Dam Municipal Water District - Doug Wilson, general manager Padre Dam Municipal Water District - Presentation 3/3 Panel Discussion: Local Approaches to Coping with Water Shortages
2024 03 13 AZ GOP LD4 Gen Meeting Minutes_FINAL.docx
Padre Dam Municipal Water District
1. Padre Dam MWD
San Diego County
85 Square Miles
100,509 population/24,813 services
Water/Sewer/Recycled Water/Santee
Lakes
2. Drought Response Levels
SDCWA – Declaring Level 2 on April 23, 2009
Level Conservation Targets Condition
Status Quo Water Use Efficiency at all times - Voluntary
1 Up to 10% - Voluntary Drought Watch
Up to 20% -
2 Drought Alert
Mandatory
Up to 40% -
3 Drought Critical
Mandatory
Above 40% -
4 Drought Emergency
Mandatory
3. ?? Decisions Decisions ??
Drought Rates -Mandatory Cut Backs
Motivating Customer Behaviors
Historical Use ?
• Punishes prior conservers
• Rewards water wasters
Water Budget Allocation ?
• Difficult
• Water allotment basis?
• Irvine WD model
4. Padre Dam’s Solution
Water Budget - allocations based on EDUs –
capacity sold at construction
Seasonal adjustment - winter/summer
Rates increase at higher tiers & drought levels
• From 3 to 5 Tiers
5. Starting Point
Residential Single Family Home
“Typical” Property = 1 EDU capacity
Allocated 450 GPD (Gallons/Day)
220 Tier 1 – “Lifeline”
230 Tier 2
Baseline for all others
Residential vary depending on lot
size
6. Single Family Homes
Budget Allocations - GPD
Service Lot Size Tier 1 Tier 2 Daily Water
Type (Acre Ft) Allocation Allocation Budget (gal)
1 EDU RES1 0.01 - 0.15 220 184 404
1 EDU RES2 0.16 - 0.25 220 207 427
1 EDU RES3 0.26 - 0.50 220 230 450
1 EDU RES4 0.51 - 2.00 220 345 565
1 EDU RES5 >2.00 220 460 680
1.5
EDU RES6 0.51 - 2.00 330 1.5X 345 675
2
EDU
RES7 >2.00 440 2X 460 900
9. Seasonal, Daily Budget Example (gal)
Level 1 Drought , RES3 = SFH, ½ acre lot, 1 EDU
500 Tier 2
Tier 1
450 141%
140%
400
350
300 70%
Gallons / Day
59%
250
200
150
100
50
-
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
10. What About Rates?
Rate Model >Net Revenue Neutrality
Rates:
Tier 1 Low rates
Tier 2 Slight increase with each drought level
Tier 3 Higher Conservation encouragement
Tier 4 & 5 Much higher and steeper
12. Outreach: Staff Efforts
Notice of Public Hearing
Prop 218 –
SD Union Tribune – April 4, 2009
“New Creed on Water:
Use Less, pay more
13. Outreach: Staff Efforts
Online bill calculator
Customer workshops
March 3
March 10
March 17
March 24
Community meetings
January 13
March 5
March 23
April 2
Various press releases & TV interviews
14. Outreach: Customer Response
162 customers called Customer Service
325 customers used the online bill calculator
80 customers (est.) attended workshops
2 meetings with Blossom Valley residents
29 written protests to proposed rates
15. Summary
Water budgets customer class – EDU
Customer targets >GPD
New 5 tier structure
Lower tier low rates
higher tier very high rates
Different water budget for summer/winter