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Buyer guide: Water management

Best water management system for commercial real estate

Published October 11, 20263 min read
Milvian AI teamFacilities and infrastructure intelligence
Blue glass office facade from below

Choose a system that meters towers, restrooms and tenant fit-outs in every building and closes a water balance. Leaks then show by line and hour, and tenants pay for what they use.

How offices and mixed-use buildings use water

EPA WaterSense estimates offices account for about 9 percent of US commercial and institutional water use and hotels about 15 percent. In offices the big lines are restrooms, kitchens and pantries, and the cooling tower that serves the chiller plant. Kitchens alone can take 10 to 15 percent of an office's water.

Leaks can account for more than 6 percent of a facility's water use, according to EPA. In a multi-tenant building nobody owns that loss: the landlord sees one bill, and tenants see a service charge.

What the system must do

RequirementWhy it matters hereAsk the vendor
Meter towers separately.Tower make-up often drives the summer bill.Do you report make-up, blowdown and cycles?
Meter tenant fit-outs.Restaurants and gyms use far more than their floor area suggests.Can you bill tenants from their own meters?
Find overnight flow.An office should be close to zero at 3 a.m.Do you alert when night flow stays above a floor?
Compare buildings per square foot.Asset managers need a fair ranking.Can you report gallons per square foot per day?

Pressure from prices and disclosure

US household water and sewer bills rose 5.1 percent in 2025 and 24.2 percent over five years across 50 cities, and commercial tariffs track the same utility costs. Investors ask for water data as well: the revised ESRS E3 requires consumption and withdrawal by site.

How to evaluate one

  1. Rank buildings by billStart with the three highest water costs per square foot.
  2. Meter the tower and tenantsThose lines usually explain most of the variance.
  3. Close the balanceSupply minus metered use is the loss to chase.
  4. Move recovery to metersBill the heaviest tenant users from data at the next reconciliation.

Where Aqueduct fits

aQ WaterGuard sub-meters each building and draws its water system as a live twin, with supply balanced against floors, the tower and unaccounted loss. The portfolio view ranks buildings by water use intensity, and Billing Management bills tenants from dedicated or shared meters. Expected use is modeled from past bills and weather, so tower savings show in money.

Sources

SourceLink
US EPA WaterSense, Types of Facilitiesepa.gov
US EPA WaterSense, Best Management Practicesepa.gov
US EPA WaterSense, Getting Startedepa.gov
Bluefield Research via Water Online, 2026wateronline.com
EFRAG, ESRS E3 delegated actknowledgehub.efrag.org
Questions

Questions about this topic

Usually yes where cooling towers or food service exist, since those lines drive most of the bill. Overnight flow on the main meter alone often points to the first leak. Aqueduct ranks buildings by water use intensity, so metering budget goes to the worst first. See reduce water loss.

Yes. Clamp-on ultrasonic meters fit on existing pipes without cutting them, so tenants keep water during installation. Existing smart or pulse-output meters are read through pulse counters or bridges instead of being replaced. See water meters.

The landlord sees the meter total and each tenant's share; each tenant sees only its own share. Aqueduct's Billing Management applies the split, generates bills on demand and flags a tenant whose use leaves its normal range, so disputes start from data.

Aqueduct reads the line again after the fix. When unaccounted flow returns to its expected level, the saving is priced at the building's water and sewer rate and the new level becomes the reference for the next period. See measurement and verification.

See Aqueduct on your own facility.

Bring a site, a utility bill or a question. We will show you where the loss is.