Commercial water efficiency & cost reduction
Office Water Audit
Washrooms, tea-points, cooling and out-of-hours leaks — we find the water your office loses when nobody is watching.
An office water audit targets the very specific ways that workplaces lose water. Offices have no production process, so almost all consumption flows through washrooms, kitchens and tea-points, cooling and the occasional cleaner's tap — which means the waste, when it appears, is concentrated and usually straightforward to fix. The catch is that most of it happens when nobody is looking: overnight, at weekends and over the long bank-holiday closures when a healthy building should be using next to nothing.
Where offices lose water
- Urinals flushing on timers — or no timer at all — through nights and weekends
- Leaking or continuously running WC cisterns on upper floors where nobody notices
- High-flow taps and showers without aerators or flow restrictors
- Kitchen and tea-point dishwashers and boilers left running or over-filled
- Comfort-cooling and humidification top-up with no sub-metering
- Cleaners’ and contractors’ outlets left open after hours
The overnight test
The single most revealing thing we do in an office is read the meter when the building is empty. A well-run office should drop to a near-zero overnight baseline. If yours is still drawing water at three in the morning, every litre is waste — and in a multi-let building it can be running through floors that are between tenants entirely. We isolate the source, whether it is an automatic urinal, a passing valve or a hidden leak in a riser, and quantify exactly what it is costing you.
Multi-let and managed buildings
Offices bring a billing wrinkle that other sectors rarely face: shared supplies and service charges. In a multi-tenant building, water is often recharged through the service charge with no sub-metering, so neither landlord nor tenant has any incentive to find waste. We help managing agents introduce fair sub-metering and clean up the surface-water drainage charges that car parks and flat roofs so often attract incorrectly.
Quick wins and the bigger picture
Office audits tend to pay back fast because the fixes are cheap: urinal controls, flow restrictors, cistern adjustments and a leak repair often recover their cost within months. We set these out as the priority, then point to the longer-term measures — sub-metering, monitoring and tariff corrections — that protect the saving over time.
Run several offices? We will prioritise the portfolio so your first water survey lands on the site with the biggest opportunity. See the numbers we have found for similar premises.
Book a free initial review for your office, or compare the approach for schools and hotels.
Why offices waste more than they think
Offices feel like low water users, and per person they often are — which is exactly why waste goes unchallenged. Nobody expects a desk-based business to have a water problem, so the overnight leak, the urinal flushing an empty building all weekend, and the drainage overcharge on the car park all sit undisturbed. Multiply a small continuous loss across every hour of the year and the figures stop looking trivial.
- Urinals flushing on a timer through nights, weekends and holidays
- Out-of-hours flow on vacant floors in multi-let buildings
- Sensor and lever taps running longer than needed
- Surface-water drainage charged on car parks that drain elsewhere
- Kitchen and tea-point appliances left to leak or run on
Landlords, tenants and the split-incentive trap
In multi-let offices, water is frequently recharged through the service charge with no sub-metering, so no single tenant has any reason to find waste and the managing agent has no visibility of it. Introducing sub-metering and a simple monthly read breaks that deadlock and makes consumption something a building can actually manage.
Small numbers, large totals
The trap with office water is that every individual loss looks too small to bother with — a tap that runs a little long, a cistern that fills a little too often, a urinal that flushes through the night. On their own none of them justify attention. Added together and multiplied across a year, they become a bill worth challenging. A review's job is to make that cumulative total visible, so a string of trivial-looking losses can finally be seen for what it costs.
A simple first check
Before booking anything, take a meter reading last thing one evening and first thing the next morning. In an office that sits empty overnight, the two figures should be almost identical; a meaningful difference is water going to waste while the building sleeps. That single check often makes the case for a full audit on its own. Share the result at your free initial review and we will tell you what it points to and whether it is worth pursuing.