Houston Commercial Water Bills: 7.87% Combined Rate Increase Starts April 2026
Houston water and wastewater rates changed on April 1, 2026. Commercial properties should isolate rate pressure from usage growth before the next operating review.
Quick Answer
Houston’s 2026 water-rate notice says the city’s April 1, 2026 adjustment produces a 7.87% average increase for combined water and wastewater service. Commercial properties should compare the first post-April bill against the same usage period, then separate rate movement from leaks, occupancy changes, irrigation, or process-water growth.
Apr. 1
Effective Date
2026 rate change
7.87%
Average Increase
Combined water + wastewater
1.37%
CPI Factor
Houston-area inflation adjustment
6.5%
Rate Study
Scheduled 2021 plan adjustment
What changed in Houston
Houston’s 2026 rate notice says water and wastewater rates adjust each year on April 1 under city ordinances. For 2026, the notice lists a 1.37% Houston-area CPI adjustment plus a 6.5% scheduled adjustment from the city’s 2021 Water and Wastewater Cost of Service Rate Study.
The headline number is a 7.87% average increase across all customers for combined water and wastewater service. The city also warns that the percentage is not identical for every account because each bill depends on customer category and usage.
Why commercial properties should not use the average blindly
A hotel, restaurant, multifamily property, car wash, or industrial user needs to model the actual account. The same citywide average can land differently depending on meter profile, billed volume, wastewater linkage, irrigation, and whether usage changed at the same time rates moved.
The most useful first pass is a same-volume comparison: take the latest post-April bill, hold kGal constant against the prior period, and identify how much of the increase is rate-driven before treating the whole increase as operational waste.
Commercial action step
By the next operating review, Houston property teams should build a one-page water exposure summary: meter number, customer class, current kGal, wastewater billing logic, prior monthly cost, new monthly cost, and the dollar delta at the same usage.
That gives ownership a practical decision path. If the bill rose because rates changed, update the budget. If usage rose too, start with leaks, irrigation schedules, process water, cooling loads, and meter behavior before the next April adjustment compounds the problem.
What to Do Next
Compare the first April 2026 bill with the same-volume pre-April period.
Separate water, wastewater, irrigation, fixed charges, and usage changes.
Model a 10%, 15%, and 20% billable-volume reduction against the new rate baseline.
FAQ
How much did Houston water and wastewater rates increase in April 2026?
Houston’s 2026 notice says the average combined water and wastewater increase across all customers is 7.87%, effective April 1, 2026.
Does every Houston commercial account increase by exactly 7.87%?
No. Houston says each customer’s adjustment is calculated based on customer category and usage, so commercial accounts should model the actual bill rather than applying the average mechanically.
Sources
Related Commercial Water Resources
Model This Market Against Your Actual Bill
Use your local rate, current monthly bill, and billed usage to estimate how much controllable volume reduction could offset this market pressure.
