Business water for warehouses and logistics

A regional logistics operator we work with runs twenty-three sites across the Midlands and South East. Each one had a different retailer. Different renewal dates. Different standing charge structures. Different invoice formats. Their finance team spent four working days every quarter just reconciling water bills. The unit rates weren’t even the problem. The admin was.

Warehouse and logistics water sits in a particular shape. Consumption per site is usually modest. Welfare facilities, yard wash-down, vehicle washing, sometimes a small canteen. But the standing charges multiply across the estate. Surface water drainage charges on a 50,000-square-foot roof can be a meaningful line. And the bigger the portfolio, the larger the cost of running it through five or six different retailers.

This page covers how we help warehouse and logistics operators consolidate and review water across their estate. The mechanics of switching are in our main switching guide.

Why portfolio management matters more than unit rate

Most water broker conversations start with the retail rate. For warehouses and logistics, that’s the wrong place to start. Consumption is low enough per site that a couple of pence on the cubic metre rate isn’t where the value lives. The value lives in three places.

First, consolidation. Moving from five retailers to one. One bill format. One renewal cycle. One account manager. Your finance team gets time back. Renewals get reviewed properly rather than rolled over for convenience.

Second, standing charges. These don’t scale with how much water you use. Each site has a standing charge, and across a multi-site estate, the total is sometimes larger than the volumetric component. Smaller meters on low-consumption sites can reduce standing charges materially.

Third, surface water drainage. A distribution centre roof and yard is a lot of impermeable area. If that area drains to the public sewer, the surface water drainage charge can be substantial. If the actual drainage runs to a soakaway, attenuation pond or licensed discharge, the wholesaler’s banded assessment may be overcharging.

Why logistics water bills are different from a typical SME

Surface water drainage on large roof areas

A 100,000-square-foot distribution centre has roof area and yard area combined that’s often well over a hectare. Surface water charges are calculated against the impermeable area that drains into the public sewer. The key word is “drains”.

If your roof outlets connect to a public combined sewer, the full assessment is reasonable. But many modern logistics buildings drain to an on-site attenuation pond, a licensed surface water outfall to a stream or river, a SuDS feature with soakaway, or a separate surface water sewer that isn’t combined with foul. In any of these cases, the surface water drainage line on the bill may be assessed wrongly. We’ve put rebate cases through on sites where reviewing the assessment produced a backdated rebate covering up to six years under the Limitation Act 1980.

Dormant sites and zero-consumption periods

Logistics portfolios churn. Sites get added, sites get closed, sites sit dormant during transition periods. The water bill keeps coming. Standing charges accrue even when no water is being used.

There are options here. Mothballed sites can sometimes have meters temporarily removed if the period is long enough. Dormant sites that have no consumption for a defined period may be eligible for reduced standing charges or full disconnection followed by reconnection when the site re-enters use. The mechanisms vary by wholesaler and we’ll talk through what’s available for your specific region.

How a portfolio review works