Fake Water Quality Scams via Phone Calls
How cold callers impersonating water authorities or health agencies claim local water supply problems and charge for filtration systems or water quality tests.
Part of: Fake Water Quality Scams
Last reviewed: 9 June 2026
Water quality concerns are a legitimate public health issue, and genuine water authorities do occasionally issue notices about supply changes, infrastructure works, or quality advisories. Scammers exploit this by making calls that mimic official utility or health authority communications, claiming a problem has been identified with the local supply and that the homeowner must act.
Unlike doorstep-based water quality scams where a demonstrator visits in person, phone-based versions focus on creating alarm and directing the homeowner to purchase a filtration system online or to pay for a 'certified test' — both of which are fraudulent.
How this scam works on phone calls
The caller claims to be from the local water authority, a public health agency, or an independent environmental testing company. They explain that the area's water supply has been identified as having elevated levels of a contaminant — lead, chlorine, or a chemical compound — and that the homeowner is at risk. A water quality test is recommended, for which a modest fee is requested upfront.
After the 'test kit' is purchased or the test fee paid, either nothing arrives or a test kit is sent that, regardless of results, is interpreted as showing a contamination requiring an expensive filtration system. The filtration system — costing several thousand pounds — is then sold aggressively, with the initial alarm driving the purchase decision.
Common red flags
- Unsolicited call from a claimed water authority warning of contamination in your specific area
- Fee charged for a water quality test — genuine local authority tests are free or very low cost
- Test results always indicate a problem requiring the purchase of a specific filtration system
- Caller cannot confirm details of the local water supply area when questioned
- Filtration system priced significantly above comparable products available independently
- Pressure to purchase during the call before consulting other sources
How to protect yourself
- Contact your actual water company directly using the number on your bill to verify any claimed contamination issue
- Check your water company's official website for supply notices — genuine advisories are published publicly
- Do not purchase filtration systems or water tests from callers who initiated contact with you
- Water authority advisories are issued publicly and do not require individual telephone payment
How to report it
- Report to your water company's customer service team
- Report to Trading Standards (UK) via Citizens Advice
- Report to Action Fraud (UK) if money was taken
Frequently asked questions
How would I actually be notified about a genuine water quality issue?
Water companies publish supply notices on their websites and sometimes deliver written notices to affected households. They may also issue public statements through local media. They do not call individual homeowners to sell water tests or filtration systems.
Are home water filtration systems ever necessary?
In most areas with a regulated public water supply, tap water meets safety standards without additional filtration. If you have specific concerns, contact your water company's technical team or commission an independent certified water analysis through an accredited laboratory.