HomeMy WebLinkAboutA034 - Staff Presentation on FY 2025/26 Water and Sewer RatesITEM #:39
DEPT:W&PC
April 8, 2025
Staff Report
STAFF PRESENTATION ON FY 2025/26 WATER AND SEWER RATES
BACKGROUND:
Each year as part of the annual budget process, staff updates a model for the Water and Sewer Funds
that reflects current and projected operating and capital expenses over the next ten years, and the
resulting annual ending fund balances in each of the two separate funds. This model is used to establish
a long-range pattern of rate increases that will fully finance these self-funded enterprise utilities,
including an operating reserve that is slowly being increased to a target of 25% of the annual operating
budget.
During the development of the FY 2025/26 budget, staff determined that a three-and-one-half
percent (3.5%) increase to water rates and a five-and-one-half percent (5.5%) increase to sewer
rates would be needed, effective July 1, 2025. While the need for an increase was shared with
Council during the budget presentations, no formal action has yet been taken by Council to adopt
these new rates.
Staff will present a summary of the fund balance analysis in a format that is very similar to what has
been used in prior years. Highlights from the attached slides will be shared at the Council meeting in a
brief presentation.
STAFF COMMENTS:
The presentation is informational only at this time . An ordinance to adjust the water rates by
three-and-one-half percent (3.5%) and the sewer rates by five-and-one-half percent (5.5%) will be
brought forward at the April 22 City Council meeting for first reading and a public hearing.
ATTACHMENT(S):
Council Handouts FY 25-26 Water and Sewer Rates.pdf
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4/4/2025
FY 2025-26
Water & Sewer Rates
April 8, 2025
Outline
National & State-wide Trends in Rates
Projected Need for Revenue Increase
Translating Revenue Needs to Rates
Projected Future Rate Trends
Customer Perspective
Council Direction
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National and State
Trends
Data sources include:
•2023 Cost of Clean Water Index
National Association of Clean Water Agencies
•2023 Water and Wastewater Rate Survey
American Water Works Association
•2024 Iowa Water and Wastewater Rate Survey
City of Ames Water and Pollution Control
National Trends
Average annual wastewater bill has doubled
nationally in last 17 years ($588 in 2023 versus $295
in 2006)
Average annual wastewater charges increased
by 3.2% from 2022 to 2023
After 21 straight years where sewer charges outpaced
inflation, this was the third consecutive year where rates
increased at a lower rate than the CPI.
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4
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4/4/2025
•Water utilities continue to shift away from declining
block rate structures (14%) and towards inclining block
structures (50%)
•Wastewater utilities are predominately uniform block
structures (75%)
•Monthly billing intervals are most common (80%),
followed by quarterly (11%) and bi-monthly (8%)
•98% of Water systems and 99.8% of Sewer systems have
a monthly base or minimum fee
National Trends
National Trends
2019-2024
Sources:2019 Water and Wastewater Rate Survey, AWWA/Raftelis Financial Consultants
2024 Water and Wastewater Rate Survey, AWWA/Raftelis Financial Consultants
Nationwide average for residential service, 1,000 cf/mo., 5/8” meter,
Water
National Average Annual Increase: 4.42%
Sewer
National Average Annual Increase:3.91%
Average Annual Increase in CPI: 4.43%
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4/4/2025
•Drinking Water: 88%
•More than 5%: 73%
•More than 10%: 39%
•Wastewater: 77%
•More than 5%: 63%
•More than 10%: 35%
2024 versus 2022 Iowa Water & Sewer Rate Survey, City of Ames, Iowa
Percent of Iowa Utilities serving >10,000
with a rate increase in past two years:
Iowa Trends
Iowa vs. National Trends
2020-2024
Water
National Average Annual Increase: 4.42%
Iowa Average Annual Increase:5.31%
Sewer
National Average Annual Increase:3.91%
Iowa Average Annual Increase:3.74%
Average Annual Increase in CPI: 4.43%
Iowa Sources:2020 Water and Sewer Rate Survey, City of Ames, IA
2024 Water and Sewer Rate Survey, City of Ames, IA
Iowa average for residential service, 600 cf/mo., 5/8” meter,
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Recent Rate Adjustments in Ames
SewerWater
--6%FY 20/21
5%--FY 21/22
--8%FY 22/23
7%--FY 23/24
3.0%3.5%Annual Average
Ames vs. Iowa & National Trends
2020-2024
Water
National Average Annual Increase: 4.42%
Iowa Average Annual Increase:5.31%
Ames Average Annual Increase:3.50%
Sewer
National Average Annual Increase:3.91%
Iowa Average Annual Increase:3.74%
Ames Average Annual Increase:3.50%
Average Annual Increase in CPI: 4.43%
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Iowa Trends in Water Rates
2 0 0 4 -2 0 24 , C it ie s w it h p op u lat ion >1 0 ,0 0 0
w it h lim e s of te n ing , 6 0 0 cf p e r m ont h
Statewide Median Ames Rates
** Ames is at the 19th Percentile, based on 2024 rates **
$0
$10
$20
$30
$40
$50
$60
2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024
Water Rates in Iowa, 2005-2024
Cities >10,000
600 cubic feet per month
Iowa Trends in Sewer Rates
2 0 0 3 -2 0 23 , C it ie s w it h p op u lat ion >1 0 ,0 0 0 , 6 0 0 cf p e r m ont h
Statewide Median Ames Rates
** Ames is at the 21st Percentile, based on 2024 rates **
$0
$10
$20
$30
$40
$50
$60
$70
$80
$90
2004 2009 2014 2019 2024
Sewer Rates in Iowa, 2005 -2024
Cities >10,000
600 cubic feet per month
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Forces Impacting
Projected Expenses
•Increased Regulatory
Requirements
•Risk and Resiliency
Improvements
•Infrastructure Renewal/
Replacement
•Increases in equipment and
commodity prices
8%
-30,000
-25,000
-20,000
-15,000
-10,000
-5,000
0
5,000
10,000
15,000
20,000
23-24 24-25 25-26 26-27 27-28 28-29 29-30 30-31 31-32 32-33 33-34 34-35
En
d
i
n
g
B
a
l
a
n
c
e
(
$
1
,
0
0
0
'
s
)
Ending Fund Balance Operating Reserve Percentage Rate Increase
Water Fund Ending Balance
With No Adjustments
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14
8
4/4/2025
Sewer Fund Ending Balance
With No Adjustments
7%
-40,000
-35,000
-30,000
-25,000
-20,000
-15,000
-10,000
-5,000
0
5,000
10,000
15,000
20,000
25,000
30,000
23-24 24-25 25-26 26-27 27-28 28-29 29-30 30-31 31-32 32-33 33-34 34-35
En
d
i
n
g
B
al
a
n
c
e
(
$
1
,
0
0
0
'
s
)
Ending Fund Balance Operating Reserve Percentage Rate Increase
Approach to Rates:
Timing & Magnitude
•Meet debt coverage requirements
•(SRF requires 110% coverage)
•Meet operating reserve target
•Gradual increase over time until achieve 25% of
each Fund’s annual operating expenses
•Proposing a long-term rate approach that
adjusts both water and sewer annually, as
opposed to staggered adjustments of a larger
magnitude
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Water and Sewer Rate Projections
Year 10Year 9Year 8Year 7Year 6Year 5Year 4Year 3Year 2Year 1Current
Year
Last
Year
34-3533-3432-3331-3230-3129-3028-2927-2826-2725-2624-2523-24
3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%8%Water Fund
5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%7%Sewer Fund
8%3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%3.5%
-5,000
0
5,000
10,000
15,000
20,000
23-24 24-25 25-26 26-27 27-28 28-29 29-30 30-31 31-32 32-33 33-34 34-35
En
d
i
n
g
B
a
l
a
n
c
e
(
$
1
,
0
0
0
'
s
)
Ending Fund Balance Operating Reserve Percentage Rate Increase
Water Fund Rate Model
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Sewer Fund Rate Model
7%5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%5.5%
-5,000
0
5,000
10,000
15,000
20,000
25,000
30,000
23-24 24-25 25-26 26-27 27-28 28-29 29-30 30-31 31-32 32-33 33-34 34-35
En
d
i
n
g
B
a
la
n
c
e
(
$
1
,
0
0
0
'
s
)
Ending Fund Balance Operating Reserve Percentage Rate Increase
Rate Projections vs. Statewide Trends
$33.99 $35.66 $37.42 $39.26 $41.20 $43.24 $45.38 $47.63 $49.99 $52.48 $55.10
$105.00 $110.88 $117.09 $123.66 $130.61
$137.96 $145.73
$153.95
$162.65
$171.85
$181.58
$59.39 $61.55 $64.12 $67.09 $69.89 $73.12 $76.18 $79.71 $82.67 $86.51 $89.71
$78.44 $82.63 $87.05 $91.72 $96.64 $101.84 $107.32 $113.11 $119.22 $125.67 $132.49
$-
$25.00
$50.00
$75.00
$100.00
$125.00
$150.00
$175.00
$200.00
$225.00
$250.00
$275.00
2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033
Statewide Range Ames Residential Statewide Median
Projected Monthly Water and Sewer Bill
600 cubic feet per month
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Proposed Water Rates
3.5%
NewIncreaseExisting
Winter
$0.0288 $0.0010 $0.0278 All customers; all consumption
Summer
Residential
Block 1 (First 1,000 cf)
$0.0288 $0.0010 $0.0278 Block 2 (Next 1,500 cf)
$0.0508 $0.0017 $0.0490 Block 3 (Over 2,500 cf)
$0.0763 $0.0026 $0.0737 Irrigation & Yard Water
Block 1 (First 2,000 cf)
$0.0415 $0.0014 $0.0401 Block 2 (Next 3,000 cf)
$0.0763 $0.0026 $0.0737 Block 3 (Over 5,000 cf)
$0.1270 $0.0043 $0.1227
Non-Residential
$0.0376 $0.0013 $0.0364 All consumption
Non-Peaking Industrial
$0.0288 $0.0010 $0.0278 All consumption
Proposed Sewer Rates
5.5%
TotalIncreaseExisting
$13.73 $0.72 $13.01 Minimum Charge
All customers, per month
$5.27 $0.27 $5.00 Prorated Minimum
$3.51 $0.18 $3.33
Consumption, per 100
cubic feet
All customers, all consumption
Interior framing inside new
Administration Building, looking
towards the offices and control room
(Taken March 28, 2025)
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•Fees found in Appendix Q will be adjusted by the
same respective percentage
•Meter setting fees will be adjusted based on actual
cost recovery
•Happens as a part of the City-wide fee schedule
adjustment later in the spring
Associated Rates and Fees
Sample Customer Bill –July 1, 2025
Median Use Residential
WaterStorm Electric
TotalSewerSummerWaterSummerElectric / Water Use
5.5%3.5%0%0%Planned Increase
$149.38$32.99$30.88$5.20$80.31600 kWh and 600 cf
-$0.90-$0.90Electric ECA
$148.48$32.99$30.88$5.20$79.41Totals
$2.89$1.81$1.08$0.00$0.00Increase Due to Rate Change
$151.37$34.80$31.96$5.20$79.41Totals
1.95%% Impact on Total Bill
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24
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4/4/2025
Sample Customer Bill –July 1, 2025
Commercial (LP)
WaterStorm Electric
TotalSewerSummerWaterSummerElectric / Water Use
5.5%3.5%0%0%Planned Increase
$2,600.12$179.51$210.40$10.40$2,199.8120,000 kWh and 5,000 cf
-$30.00-$30.00Electric ECA
$2,570.12$179.51$210.40$10.40$2,169.81Totals
$17.23$9.87$7.36$0.00$0.00Increase Due to Rate Change
$2,587.35$189.38$217.76$10.40$2,169.81Totals
0.67%% Impact on Total Bill
All FY 2025/26 Utility Rate Adjustments
( S a m p l e b i l l s b e l o w i n c l u d e e l e c t r i c , w a t e r, s e w e r, s t o r m w a t e r )
June 1, 2026
(New Electric –Summer
in effect)
November 1, 2025
(New Electric –Winter
in effect)
July 1, 2025
(New Water & Sewer
in effect)
Existing
(June 1, 2025)Customer Type
$65.50$63.39$65.12
(2.34%) $63.63 Minimum Use Residential
100 kWh and 100 cf
$152.57$139.91$151.37
(1.95%) $148.48 Median Use Residential
600 kWh and 600 cf
$222.25$201.13$220.38
(1.86%) $216.36 Large Residential
1,000 kWh and 1,000 cf
$333.63$286.07$329.80
(0.94%) $326.73 Small Commercial (GP)
2,000 kWh and 600 cf
716.05$601.59$706.93
(0.61%)$702.61 Small Commercial (GP)
5,000 kWh and 1,000 cf
$1,470.37$1,232.54$1,452.44
(0.77%) $1,441.41 Small Commercial (GP)
10,000 kWh and 3,000 cf
$2,620.35$2,387.06$2,587.35
(0.67%) $2,570.12 Commercial (LP)
20,000 kWh and 5,000 cf
$7,459.89$6,763.04$7,365.76
(0.67%) $7,316.47 Commercial (LP)
60,000 kWh and 15,000 cf
$12,014.81$10,892.85$11,859.19
(0.57%) $11,792.38 Commercial (LP)
100,000 kWh and 20,000 cf
Percentages listed are comparisons versus the June 1, 2025 rates
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4/4/2025
Recommended Action & Timeline
Approve on April 22 the first reading of an
ordinance that will:
•Adjust Water Rates by 3.5%
•Adjust Sewer Rates by 5.5%
•New rates effective for bills due on or after July 1, 2025
Timeline
•First reading on April 22
•Second reading on May 13
•Third reading and adoption on May 27
Questions & Direction
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