Water Sampling & Laboratory Testing
Water sampling provides verified evidence of the microbiological condition of your system. We collect samples using full chain-of-custody handling, send them to an independent water testing laboratory, and have a qualified engineer interpret the results — with practical follow-up actions where needed.
Frequency
Risk-driven (often quarterly or annual)
Site time
Typically 1–4 hours per visit
Deliverable
Lab certificate + interpretation
Why it matters
Sampling is the only way to verify what is actually in your water. Temperature checks and visual inspection identify risk; sampling tells you whether your control regime is working in practice.
Sampling is the right default for higher-risk systems — cooling towers, healthcare premises, sites with vulnerable occupants — and any time you need to verify a disinfection has worked.
Who it's for
- Properties with high-risk populations or sensitive end users
- Sites flagged as high risk in a Legionella risk assessment
- Post-disinfection verification (e.g. after tank cleans)
- Properties with cooling towers or evaporative condensers
- Routine water hygiene sampling programmes
What's included
- Sampling planning and scope definition
- Aseptic sample collection
- Chain-of-custody handling and transport
- Independent laboratory analysis
- Engineer-led interpretation and remedial advice
What you receive
- Laboratory analysis certificates
- Plain-English engineer interpretation
- Recommended remedial action where required
- Clear written records for your file
Our process
A repeatable, engineer-led delivery sequence.
- 1
Sampling plan
We agree the outlet schedule, parameters (Legionella spp., total viable counts, Pseudomonas as required) and frequency before attending.
- 2
Aseptic collection
Engineers collect samples using sterile bottles, neutralisers and full chain-of-custody documentation.
- 3
Laboratory analysis
Samples are transported under controlled conditions to an independent water testing laboratory for culture and identification.
- 4
Result interpretation
A qualified engineer reviews the certificate and writes a plain-English interpretation — not just a forwarded PDF.
- 5
Action plan
If results are out-of-spec we co-ordinate remedial works (flush, disinfect, re-sample) and notify you immediately.
Frequently asked questions
Related services
Legionella Risk Assessments
Learn more
Cold Water Storage Tank Cleaning & Disinfection
Learn more
Temperature Monitoring & Water Safety Programmes
Learn moreSee which sectors we serve for guidance specific to your building type.
Want background reading? Browse our compliance guides or talk to an engineer.
Need a Legionella risk assessment or remedial works?
Speak to our engineers about a compliance plan tailored to your portfolio.