Chlorination and disinfection — certified clean before sign-off.
Specialist disinfection of new and modified pipework, cold water storage tanks, calorifiers and distribution to BS8558 and PD8554680. Issued with a chlorination certificate accepted by water authorities, building control and insurers.
Chlorination & Disinfection
Any new or significantly modified potable water system needs to be disinfected and proven clean before it's used — that's BS8558. The standard prescribes how, the certificate proves you did it, and the post-disinfection sample proves it worked.
We disinfect everything from a single replaced section of dead-leg through to a 60,000 m² hospital potable system. Every job comes with the certificate, the sample chemistry and the photographic evidence that closes out the works.
Building control will ask for it. The water authority will ask for it. The insurer will ask for it at first claim. The Legionella risk assessor will ask for it on the next review. Have it in your hand and the question goes away.
Operating from a Birmingham base, we mobilise chlorination and disinfection across Birmingham and the West Midlands same-day for both planned and emergency work, with UK-wide cover for multi-site clients.
When you need it
- You're handing over a new build, refurb or extension with a new potable water system
- You've replaced a calorifier, cold water storage tank, dead-leg or any significant section of pipework
- A Legionella positive has come back and you need a certified disinfection response
- A cold water storage tank is being returned to service after extended shutdown or empty period
- Building control or the water authority has requested a BS8558 certificate
- Your insurer is asking for evidence of certified disinfection on a recent install
What's included as standard.
A typical engagement covers every line below. Where your scope needs more — multi-site rollout, white-label delivery, framework KPIs — we build it on top of this baseline.
Pre-Disinfection Survey
System verification, dead-leg identification, drain-point identification, RAMS and COSHH submitted in advance.
System Charging
Charging the system with sodium hypochlorite solution to a target free chlorine residual of 50 ppm (or per system specification).
Contact Time
One-hour contact time held, with confirmed residual at every outlet — distal, sentinel, tap-by-tap.
Neutralisation & Flush
Neutralisation with sodium thiosulphate and full flush to drain, with verified zero-chlorine residual before sample.
Sample Evidence
BS8558-compliant post-disinfection sampling via UKAS-accredited laboratory — TVC, coliforms, Pseudomonas, E. coli.
Certification
Chlorination certificate issued to BS8558, including system schematic, dose calculation, sample results and photographs.
The compliance map for chlorination.
Built around the sector's compliance picture.
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From brief to audit-ready evidence in five steps.
Brief & Survey
Free site walk-through with a senior engineer — scope, plant, risk, gaps.
Quote & Scheme
Itemised quote plus written scheme of control, dosing logic and reporting cadence.
Mobilise
Risk assessments, method statements, HSE paperwork and induction — turnkey.
Deliver
Engineers on-site with digital reporting, photos, lab links and live PPM tracking.
Evidence
Certificates, logbooks and HSE-ready audit packs — issued within 48 hours.