HESI
Based in Bishop's Stortford, HertfordshireHESI is based in Bishop's Stortford, Hertfordshire, offering contaminated land report and percolation and soakaway tests across the East of England.
Services
| Service | Regulation | Price |
|---|---|---|
| Contaminated land report | Phase 1 | Ask for a quote |
| Percolation and soakaway tests | Part H | Ask for a quote |
Services listed on Signed Off. The provider may offer others.
About
Geotechnical and geo-environmental engineers based in Bishop's Stortford. Provides the full contaminated land sequence from Phase One desktop study and Phase Two site investigation to remediation strategy and verification, as well as BRE 365 soakaway testing.
Details taken from the provider’s own website on 17 October 2026.
What we’ve checked, and what we haven’t
Areas covered
East of England
About these reports
Contaminated land report. A contaminated land report, usually called a Phase 1 desk study or preliminary risk assessment, checks whether past uses of a site could have left pollution in the ground that might harm future residents.
Percolation and soakaway tests. A percolation test measures how quickly water drains away into the ground on your site.
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