The Phoenix Catch-Up Is Coming: Why Your Water Bill Is a Direct Threat to NOI
Gilbert just raised water rates 25%. Chandler and Queen Creek went 15%. Phoenix's own internal memo projects 5β13% per year through 2029. For multifamily owners, this isn't a utility line item β it's NOI compression that resets your property's value. The good news: a 10% reduction on a master meter bill is achievable with proven technology, and it's enough to offset most of what's coming.
If you own or operate multifamily property in the Phoenix Valley, the era of cheap water is ending. The last six months stopped being background noise and started becoming a direct threat to your asset's performance.
Gilbert is moving forward with a 25% water rate hike. Chandler and Queen Creek are at 15%. These aren't routine adjustments. This is equity erosion showing up on your utility bill β and the timing matters, because when water expense jumps, NOI drops, and when NOI drops, your property gets repriced.
The Math Owners Need to Run
Pick any property in your portfolio and run this exercise. If rate increases push your annual water expense up by $25,000, here's what that does to asset value at common cap rates:
- $500,000 in lost value at a 5% cap rate
- $416,667 in lost value at a 6% cap rate
- $357,143 in lost value at a 7% cap rate
A rate hike doesn't just raise a bill. It takes a bite out of the asset. And the uncomfortable part: that bite compounds. Every year the city raises rates again, the cap-rate math runs again on a bigger number.
If Gilbert can move 25% in one shot, the real question isn't "Is Phoenix next?" It's how soon, and how much.
The Writing on the Wall: The Spencer Memo
While the surrounding cities are getting the headlines, Phoenix has already told the market where this is going.
In April 2024, Phoenix Deputy City Manager Ginger Spencer issued a memo to the City Council Transportation & Infrastructure Subcommittee projecting water and sewer rate increases of 5% to 13% per year through 2029. That's not outside speculation. That's the city's own math.
Layer in Phoenix Water Services Director Troy Wilson's January 2025 testimony about aging infrastructure β pipes averaging 50+ years old, declining federal funding β and the picture gets clearer. Capital has to come from somewhere, and Wilson was direct about who pays for it: ratepayers built these facilities, and ratepayers are going to fund the replacement.
As of May 2026, Phoenix has not announced a new rate package β but Scottsdale gave notice of intent for a 4.5% increase in February, joining Gilbert, Chandler, and Queen Creek. Phoenix is currently the Valley holdout, running on the final step of a three-phase package the City Council approved in 2023. The math the Spencer Memo laid out still has years to run, and Phoenix hasn't shown its next hand yet.
For an owner running on multi-year holds, planning around the assumption that water costs stay flat β or rise at general inflation β is no longer a defensible assumption.
What Owners Can Actually Do
There are three plays available to a multifamily owner facing a rate environment like this one. They're not mutually exclusive, but they have very different ROI profiles.
1. Absorb the increase
The default. You let the rate hikes flow straight to the expense line, NOI compresses, and at refinance or sale the property reprices. This is what most operators are doing right now, mostly because they haven't run the numbers.
2. Push it to residents
If your property is set up for RUBS or sub-metering, you can recapture some portion of the increase from residents. The catch: at market-rate properties you can only push so hard before lease renewals start hurting, and at LIHTC/Section 8 properties your ability to pass through is capped by the utility allowance framework. Recapture helps. It doesn't solve.
3. Reduce the volume on the master meter
The third option β and the one most owners haven't seriously evaluated β is to reduce the gallons the master meter records in the first place. Less recorded volume, lower bill, regardless of what the rate does. This is where conservation technology stops being a sustainability talking point and starts being a financial play.
On a 250-unit Phoenix property running near the local benchmark of 182 gallons per unit per day, a 10% reduction on the master meter is roughly $20,000β$25,000 in annual water and sewer expense β recurring, compounding with every rate increase. At a 7% cap rate, that's $285,000β$357,000 in protected asset value. The payback on a properly engineered installation is typically 12β18 months.
Three scenarios worth understanding when you evaluate this category: 8% reduction as a conservative floor, 10% as the expected case across most properties, and 15% as the upside on properties with the right conditions. The variability is driven by service line size, current pressure profile, and how the building is metered β which is exactly the diligence a real ROI analysis works through.
A Note on the Numbers You'll Hear
Conservation is a category with a credibility problem, because vendors routinely promise savings ranges that can't be defended at a specific property. A 50% reduction claim from a high-rise tower in Michigan tells you nothing about a garden-style property in Phoenix. The honest framework is property-specific: pull 12 months of real water and sewer bills, model the savings against the actual master meter usage, and price the install against the actual service line size. Anything else is marketing.
If a vendor can't show you the math on your specific property β with your bills, your meter configuration, and your cap rate β they're selling a story, not a project.
Where to Start
If you want to see what this looks like on a property you own or manage, cutmywaterbill.com publishes property-specific ROI reports built from real Phoenix multifamily data. The report uses your service line size, the local benchmark consumption profile, and your cap rate to model conservative, expected, and upside savings β alongside the NOI lift and added asset value at each scenario.
Request a property-specific ROI report or book a 15-minute call. No proposal, no pressure β just the math on your property.