Environmental Testing near you

Section 78A of the Environmental Protection Act 1990 sets the test. Land is contaminated land where it appears to the local authority that significant harm is being caused or there is a significant possibility of such harm, or that significant pollution of controlled waters is being caused or there is a significant possibility of it. What counts as significant harm is determined in accordance with statutory guidance issued by the Secretary of State rather than being spelled out in the Act itself.

The same section defines remediation, and the definition is broader than digging soil out. It covers assessing the condition of the contaminated land, of any controlled waters affected and of any adjoining land; carrying out works, operations or steps to prevent, minimise, remedy or mitigate significant harm or to restore the land or waters to their former condition; and making subsequent inspections to monitor how things stand afterwards. Assessment and monitoring are part of remediation, not preliminaries to it.

For a homeowner the practical consequence is that a soil result showing a substance above a generic screening value does not make your garden contaminated land in the legal sense. It makes it land where a risk assessment is needed. The step between those two things is where most of the professional work happens, and an adviser who skips straight from a laboratory number to an alarming conclusion is not following the framework.

The Environment Agency's land contamination risk management guidance, LCRM, is the process the regulators expect. It was published on 8 October 2020 and last updated on 12 June 2025, and the Environment Agency, Natural Resources Wales, the Scottish Environment Protection Agency and the Northern Ireland Environment Agency all expect it to be followed when managing the risks from historic land contamination — one of the rare instances where the four UK nations point at the same document.

It runs in three stages. Stage 1 is risk assessment, itself tiered: a preliminary assessment that builds a conceptual site model and identifies potential pollutant linkages, then generic quantitative and, where needed, detailed quantitative assessment. Stage 2 is options appraisal, identifying and evaluating the possible remediation approaches. Stage 3 is remediation and verification, carrying the chosen option out and demonstrating that it worked.

The pollutant linkage idea is the one worth carrying away. Risk requires a source, a pathway and a receptor: a substance, a route by which it can reach something, and something that can be harmed. A contaminant in soil two metres below an intact concrete slab with nobody digging is a different proposition from the same contaminant in the top 300 millimetres of a vegetable bed. That is why a competent assessment starts by describing the site rather than by sending samples off.

Government planning practice guidance is explicit about where responsibility sits: securing a safe development rests with the developer or landowner, while the local planning authority has to be satisfied that the proposed development is appropriate for its location and will not pose an unacceptable risk. The planning system deals with contamination to the extent that it is not already addressed by other regimes, including Part 2A and the building regulations.

The mechanism is conditions, usually in a recognisable sequence: site characterisation, submission of a remediation scheme, implementation of that scheme, and verification, often with a requirement for a report before occupation. If you are building on a plot with a past, expect that chain and budget time for it, because each link needs discharging by the authority and none of them happens overnight.

The guidance also sets the standard for the outcome: remediated land should as a minimum be brought to a condition where it would not be capable of being determined as contaminated land under Part 2A. In other words the planning route aims higher than the statutory regime's intervention threshold, not at it.

Scope is set by history and by who is asking. A quotation moves according to what the land was used for before, whether a desk study alone will satisfy the planning authority or intrusive investigation is required, how many trial pits or boreholes are needed and whether a rig can get onto the plot, the suite of determinands the laboratory is asked to analyse for, whether ground gas monitoring visits are required over a period rather than once, and whether the work has to be reported to a standard a regulator will accept. Testing a garden for reassurance and discharging a planning condition are different products with different prices.

LokalMatch simply puts the request in front of firms. Explain what you know about the site's history, what has prompted the testing and what you need the report for, add your postcode, and consultancies working in your area reply directly to you. There is no charge to homeowners and pros pay for the requests they receive. LokalMatch does not sample, analyse or interpret anything, does not set prices and does not vet, rank or recommend anyone, so confirm competence, accreditation and exactly what the deliverable will be before instructing.