PFAS
Forever chemicals. Measured at extremely low concentrations.
Specialist analysis can identify individual PFAS compounds in water at nanogram-per-litre concentrations, reported against a defined target list.
Explore PFAS testing
Know what's in your water.
Independent water testing and verification, managed from sampling to report.
Test for PFAS, microplastics, metals and a comprehensive range of chemical, physical and microbiological parameters. Analysis performed by accredited specialist partner laboratories.
Independent testing & verification · London, UK
We look beyond what you can see.
Microplastics
Small particles. Big questions.
Water can be analysed for microplastic contamination, including particle characteristics where supported by the selected method.
Explore microplastic testing
Metals
Detect what's dissolved in your water.
Testing can include metals such as lead, arsenic, cadmium, chromium, copper, mercury and nickel, depending on the analysis selected.
Explore metals testingOne sample. A much bigger picture.
PFAS
Forever chemicals and selected PFAS compounds
Microplastics
Particles and polymer analysis where appropriate
Metals
Lead, arsenic, mercury, cadmium, chromium, nickel, copper, iron, manganese and others
Microbiology
E. coli, coliform bacteria, enterococci and other relevant microbiological indicators
General Chemistry
pH, conductivity, hardness, alkalinity and other water chemistry parameters
Nitrates & Nitrites
Nitrogen species reported together
Pesticides
Analysed against a defined target list
VOCs
Volatile organic compounds
Chlorine & Disinfection By-products
Residual chlorine and trihalomethanes
Fluoride
Natural and added fluoride
Turbidity
Suspended particle content
Organic Contaminants
Organic parameters by agreed method
For water technology companies
Don't just say it works.
Prove it.
Independent performance testing for water filters, purification products and emerging water technologies.
We arrange sampling immediately before and after filtration, under controlled conditions. Analysis is performed by accredited specialist partner laboratories, and we turn the results into clear, evidence-based performance data.
01
Influent
Contaminated test water
02
Filter
Product being evaluated
03
Effluent
Filtered water
04
Analysis
Accredited partner laboratory
05
Report
Independent performance data
Performance data
Measure what matters.
Accredited analytical results, presented so an engineering or product team can act on them.
PFAS (sum of targets)
Before
0ng/L
After
0.0ng/L
Reduction
0.0%
Lead
Before
0µg/L
After
0.0µg/L
Reduction
0.0%
Illustrative data only. Actual results depend on the product, test conditions and analytical method.
From prototype to proof.
01
Define
Tell us what your product is designed to remove.
02
Design
We agree an appropriate testing programme and methodology.
03
Test
Your product is evaluated under controlled conditions.
04
Analyse
Samples analysed by accredited specialist partner laboratories.
05
Report
Receive one clear report with results and performance data.
Claims need evidence.
Consumers increasingly want to know what filtration products actually remove.
Why independent testing mattersValidate product performance
Understand contaminant reduction
Compare prototypes
Improve filter design
Generate technical evidence
Support product-development decisions
Communicate performance more transparently
We manage it. Accredited labs analyse it.
London Water Testing does not operate its own laboratory. We manage the full testing process — sampling, logistics, test selection, laboratory coordination, results and reporting — and the analysis is performed by accredited specialist partner laboratories.
One point of contact from first enquiry to final report, with the specialist capability of several laboratories behind it.
See How We WorkSingle Point of Contact
One team manages your project from enquiry through to report.
Test Selection
We help choose the parameters and sensitivity that answer your question.
Sampling & Logistics
Containers, preservation, chain of custody and temperature-controlled transport.
Laboratory Coordination
Each analysis placed with a laboratory accredited for that work.
Detection Limits
Reporting limits stated for every parameter measured.
Results & Reporting
Findings compiled, checked and explained in one clear document.
Results without the confusion.
Every project results in a clear report designed to communicate what was tested, how it was tested and what was detected.
Sample information
Test methodology
Analytical results
Units
Detection limits
Reference values where appropriate
Before/after filtration results
Percentage reduction
Technical observations
Analysing laboratory and accreditation status
London Water Testing
Report · Example
- Sample ID
- EL-000000
- Sample type
- Filtered water
- Received
- —
- Method
- LC-MS/MS
| Parameter | Before | After | Red. |
|---|---|---|---|
| PFOA | 18 ng/L | <0.5 | >97% |
| PFOS | 22 ng/L | <0.5 | >97% |
| Lead | 52 µg/L | 0.8 | 98.5% |
| Chlorine | 0.45 mg/L | 0.02 | 95.6% |
| Turbidity | 1.8 NTU | 0.1 | 94.4% |
Illustrative example. Values, units and detection limits shown are for layout purposes only.
View sample reportWater filter manufacturers
Building the next generation of water filtration?
We help water-technology companies independently evaluate what their products actually remove.
What are you drinking?
Understand your water with testing designed around the contaminants you want to investigate, managed by us and analysed by accredited specialist partner laboratories.
Test My Water