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How Can We Tell Which Water Hygiene Contracts and Sites Actually Make Money?

Water treatment firms price contracts per site but never see real cost per site. We build job costing from engineer time, travel, samples and materials.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Nobody knows which sites lose money because the price is set per contract while the costs are scattered across timesheets, mileage, lab bills and van stock. We build job costing that brings engineer time on site, travel, lab charges and materials together per visit, compares them with what the site earns, and shows margin by site, client and contract.

A busy team and a thin margin

Your engineers are flat out, the diary is full, and yet at the year end the margin is thinner than it should be. The directors suspect some contracts are underpriced. Everybody has a theory: the care home group with sites spread across three counties, the office block where access always takes an hour, the school trust that asks for extra visits without paying for them.

Nobody can prove it, because the price is known per contract but the cost is not. Engineer hours are in timesheets or the job app. Mileage is in fuel cards. Lab costs arrive on one monthly invoice. Materials come off vans with no record of where they went. Pricing the next tender relies on instinct.

Why cost per site stays invisible

CostWhere it sitsLinked to a site?
Engineer time on siteJob app or timesheetSometimes
Travel time and mileageFuel cards, vehicle trackersNo
Lab analysisMonthly lab invoiceOnly with a sample register
Materials and chemicalsVan stock, supplier invoicesRarely
Office time on reports and adminNowhereNo

Without those links, a contract's profitability is an average across the whole business, which hides the sites that drag everything down.

What pricing blind costs you

Underpriced sites stay underpriced at every renewal, because nobody can show why the price should rise. Well-priced work subsidises poor work. Tenders are won or lost on guesses. And when a client asks for extra visits or tasks, it is hard to judge what they are really worth.

There is a quieter cost as well. Engineers are sometimes blamed for slow visits at sites where the real problem is the building: a plant room behind two locked doors, a keyholder who is never on time, outlets spread across a campus. Without site-level data, the conversation is about people rather than the site.

Job costing built from records you already produce

  1. Engineer time on site is taken from the visit form start and finish times, per visit.
  2. Travel time and distance are attributed to each visit from route data or vehicle trackers where you have them, split sensibly across the sites in a day.
  3. Lab charges are allocated from the reconciled lab invoice to the samples, and so to the sites.
  4. Materials and chemicals recorded in visit forms are costed at your purchase prices.
  5. An allowance for office time per visit or per report can be added at a rate you set.
  6. Revenue per site is taken from invoices in your accounts package, and margin is shown per visit, site, client and contract, over any period.

Cost rates, such as an engineer's hourly cost, are set by you and kept in one place. We do not guess them.

Evidence for the next price conversation

Directors can see which sites and contracts earn their keep and which do not, and why: travel, access delays, extra samples, or simply an old price. Renewals go into the conversation with evidence. New tenders are priced using real costs from similar sites.

For example, a contract that looked healthy overall may turn out to have two outlying sites where travel eats the fee, and a third where the engineer spends a long time on each visit because the plant room is hard to reach. The fix might be a price change, a travel charge, or grouping those sites with other work in the area. With the data, it is a decision rather than a hunch.

Operations benefit too. If a site's time on site creeps up, it shows before it becomes a habit.

The same view helps when a client asks for something extra, such as additional sampling or a second monthly visit during a refurbishment. You can see what similar work costs you at that site and price the change on evidence, instead of agreeing on the phone and discovering later that it was done at a loss.

Is this your blind spot?

  • You know revenue per contract but not cost per site.
  • Renewal prices are set by instinct or a flat increase.
  • Some sites are suspected of losing money but nobody can prove it.
  • Travel time between outlying sites is not charged or measured.
  • Tender pricing relies on the director's experience alone.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Do we need vehicle trackers?

No. Travel can be estimated from route distances between visits. Tracker data just makes it more precise.

Will engineers feel monitored?

The data comes from records they already complete. We suggest explaining the purpose to them: pricing, not policing.

Does it replace our accounts package?

No. It reads revenue and costs from Xero, Sage or QuickBooks through their APIs and adds the site-level detail those packages do not hold.

What if our records are incomplete?

Costing starts from whatever is recorded now and improves as visit forms and sample tracking capture more. Gaps are shown, not hidden.

Keep reading

More on Problems We Solve

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