Miami-Dade Proposes Another 6% Water & Sewer Rate Increase for October 2026
- 11 hours ago
- 6 min read
If you manage a hotel, apartment community, restaurant or commercial property in Miami-Dade, there is another utility-cost increase worth putting on your radar.
Miami-Dade County is proposing a 6% retail water and wastewater rate adjustment for Fiscal Year 2026–27, with a proposed effective date of October 1, 2026
. The County Commission accepted the Water and Sewer Department's report on the proposal on July 21, 2026.
And yes, this comes after Miami-Dade's current FY 2025–26 budget already implemented a 3.5% retail water and wastewater rate increase effective October 1, 2025. That increase was applied across residential, multifamily, mixed-use and non-residential retail classes.
So if you feel as though water costs keep moving in only one direction, you're not imagining it.
This is Part 2 of our 5-part Miami-Dade Commercial Water Cost Series, where the FluidLytix team is taking a closer look at what local water costs mean for commercial property owners—and what you can actually do about them.
What Exactly Is Miami-Dade Proposing?
The Miami-Dade Water and Sewer Department, commonly referred to as WASD, has proposed a:
6% retail water
and wastewater rate adjustment
with an intended effective date of: October 1, 2026
The proposal would apply to retail customers within WASD's service areas. Wholesale utility rates are handled separately.
For commercial owners, the word retail is important. In utility terminology, it doesn't mean retail stores. It refers to customers billed directly by the Water and Sewer Department rather than municipalities or other utilities purchasing water wholesale.
Hotels, restaurants, offices and other commercial properties directly served and billed by WASD generally fall within its non-residential retail customer structure.
Is the 6% Increase Final?
Not yet. That's an important distinction. The Board of County Commissioners accepted the report describing the proposed 6% adjustment, but the Water and Sewer Department's own report states that implementation requires an amendment to Implementing Order 4-110, which contains WASD's official Schedule of Rates, Fees and Charges.
Miami-Dade's FY 2026–27 budget process is also still underway. The County has scheduled public budget hearings for: September 3, 2026 and September 17, 2026
before the FY 2026–27 budget takes effect in October.
So as of August 2026, the accurate wording is: Miami-Dade is proposing a 6% retail water and wastewater rate increase. Not: Miami-Dade rates have increased 6%.
We'll update this article when the final FY 2026–27 rate schedule is adopted.
Why Does Miami-Dade Say It Needs the Increase?
This isn't simply being presented as a routine cost-of-living adjustment.
According to the County's report, WASD says the additional revenue is necessary to continue funding major infrastructure and regulatory programs, including:
federally required Consent Decree work
Ocean Outfall compliance
Advanced Metering Infrastructure
water and wastewater system upgrades
other capital and regulatory requirements
The County says the proposed adjustment would generate approximately $65.6 million in recurring annual revenue, which would support approximately $435 million in bond financing for capital projects. WASD also says its Consent Decree program is approximately 89% complete, with a June 2028 compliance deadline approaching. The Department argues that without the additional revenue, a number of currently programmed infrastructure projects would have to be suspended.
In other words, the County has a significant infrastructure bill of its own. And some of that cost ultimately flows through to ratepayers.
Didn't Miami-Dade Just Raise Rates?
Yes. The current FY 2025–26 budget contains a 3.5% retail rate increase, effective October 1, 2025. Miami-Dade says that adjustment was applied evenly across residential, multifamily, mixed-use and non-residential retail customers. There was actually substantial discussion last year about whether rates could remain flat.
According to County records, WASD originally considered a larger increase but identified recurring operational savings that reduced the FY 2025–26 increase to 3.5%. Officials warned at the time that further reductions could require delaying infrastructure projects tied to regulatory obligations.
The County's latest report says projected increases needed to support the capital program have ranged from 5% to 10% annually over the past five years, although implemented increases have generally been lower than those projections.
That's something commercial property owners should pay attention to. This proposed 6% increase may not be the end of the long-term rate conversation.
What Could a 6% Increase Mean for a Commercial Property?
For a household, Miami-Dade estimates the increase relatively modestly: about $3.77 per month for what the County describes as a typical residential customer.
But that's not necessarily the most useful way to look at the issue if you're operating a 300-room hotel, a large apartment community or another high-use commercial facility.
Commercial properties can spend thousands—or tens of thousands—of dollars per month on water and wastewater. As a very simple budgeting illustration:
Current monthly water/sewer expense | 6% equivalent |
$5,000 | $300/month |
$10,000 | $600/month |
$20,000 | $1,200/month |
$50,000 | $3,000/month |
Those numbers are not predictions of anyone's actual future bill. The final effect depends on the adopted rate schedule, meter size, usage, billing classification, wastewater treatment and other charges. But they show why percentages matter differently at scale. For a commercial property, even a seemingly modest rate increase can become a meaningful annual operating expense.
And High-Use Properties Already Face Tiered Pricing
As we explained in Part 1 of this series, Miami-Dade doesn't charge one flat water price regardless of consumption. WASD uses an inclining rate structure, meaning the unit price of water rises as consumption moves into higher tiers. The County specifically says the structure is designed to encourage conservation.
Under the current FY 2025–26 non-residential schedule, for example, the highest commercial water-consumption tier is priced at $10.4299 per CCF, compared with $0.5109 per CCF in the lowest tier. One CCF equals 748 gallons. That's why high-use properties need to think about both sides of the equation:
What does the utility charge? and How much metered water does the property consume?
You don't control the first one. You may have more influence over the second.
For Owners, This Is Really an NOI Conversation
This is where water stops being simply a sustainability discussion.
Water and sewer are operating expenses. For hotels, multifamily properties and other income-producing real estate:
Revenue − Operating Expenses = Net Operating Income
If utility rates increase and nothing else changes, operating expenses rise.
That puts pressure on NOI.
On the other hand, if a property can sustainably reduce water and related wastewater costs without negatively affecting its operation, those recurring savings can help support NOI.
This is one of the reasons we're encouraging owners and asset managers to start looking at water differently.
Not simply as: “the water bill.” But as: a recurring controllable operating expense.
You Can't Control Miami-Dade's Rates. You Can Look at Consumption.
We certainly aren't suggesting commercial property owners can offset every future utility-rate increase. And not every building has the same opportunity. But this is exactly why we spend so much time at FluidLytix looking at the actual property data.
Meter size matters.
Consumption matters.
Occupancy matters.
Existing conservation measures matter.
Building conditions matter.
And the utility bill itself tells us a surprising amount.
The patented FluidLytix WAVE Valve™ works at the building's main water line and is designed to improve system-level water efficiency while maintaining consistent, usable pressure at fixtures. It can work alongside existing measures such as low-flow fixtures, efficient equipment and other conservation programs. And most importantly, we believe results should be measured—not simply promised.
We've Already Seen the Opportunity in Miami Beach
At The Gates Hotel Miami Beach, FluidLytix documented an average:
20.7%
reduction in total water utility costs.
That's an operating hotel with real guests, real bills and real-world operating conditions. We aren't saying every Miami property will achieve the same result.
They won't. But it demonstrates why we think commercial property owners should at least understand their water-efficiency opportunity before the next round of utility increases arrives.
Our Advice: Don't Wait Until October to Look at the Numbers
If the proposed increase is ultimately approved, commercial property owners will have very little influence over what Miami-Dade charges. But you don't have to wait until a higher bill arrives to start asking questions.
Pull out a recent water bill.
Look at your consumption.
Compare it with previous periods.
Understand your meter size and rate category.
And if the property's water and wastewater expense is significant, determine whether there is a realistic efficiency opportunity. We're happy to help with that part.
Send us one recent water bill. We'll look at the property's consumption and utility costs and help you determine whether a deeper evaluation makes sense.
Want the bigger Miami picture?
Part 2 of 5: Miami-Dade Commercial Water Cost Series
Coming next: How a Miami Beach Hotel Reduced Total Water Utility Costs by 20.7%
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Information last verified: August 22, 2026.
The proposed 6% FY 2026–27 adjustment is not yet an effective rate. The Miami-Dade Water and Sewer Department states that implementation requires an amendment to its official Schedule of Rates, Fees and Charges. The current FY 2025–26 rate schedule remains in effect.
Official sources: Miami-Dade proposed 6% water and wastewater rate report · Miami-Dade FY 2026–27 budget process · Current Miami-Dade Water and Sewer rates
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