Environmental Incident Reporting on Site: What to Report, to Whom, and When

A diesel spill that reaches a drain is not a RIDDOR matter and the HSE is not who you call. Environmental incidents have their own regulators, their own reporting duties and their own offences — and the record you make in the first hour tends to decide how the next six months go.

It is not RIDDOR, and it is not the HSE

The most common error in environmental incident handling is procedural rather than technical: a site that is well drilled on RIDDOR assumes the same machinery covers a pollution event.

It does not. RIDDOR covers injuries, occupational diseases and specified dangerous occurrences, and reports go to the Health and Safety Executive. Environmental harm is the business of the environmental regulator for the nation you are working in, under an entirely separate set of duties.

One event can trigger both, independently. A hydraulic hose failure that injures an operative and discharges oil into a surface water drain is a RIDDOR matter and an environmental matter, and discharging one duty does nothing for the other. Reporting to the HSE does not notify the Environment Agency, and no regulator will treat "we reported it under RIDDOR" as compliance with an environmental permit condition.

Who to call

Two things worth noting. England and Scotland share the 0800 number but not the same service, and Scotland's is not an operator-staffed 24-hour line, so an out-of-hours incident north of the border needs a different plan. And older site documents frequently still give the Environment Agency's number for Welsh sites — Natural Resources Wales has had its own line since taking over those functions, so a template inherited from an English project will send your site manager to the wrong regulator.

Put the right number on the right site. The emergency contact board is one of the few documents guaranteed to be read under pressure by someone who has not read it before. A single wrong number on it costs you the only thing that matters during an incident, which is time.

What has to be reported

The Environment Agency's incident line covers, among other things:

• Pollution to water or land — the category that captures most construction incidents: fuel and oil spills, silty or cementitious run-off, concrete washout, uncontrolled discharges from dewatering
• Dead fish, or fish in distress — gasping at the surface, a classic symptom of either a pollutant or oxygen depletion downstream of a site
• Incidents at regulated waste sites
• Damage to the natural environment more broadly, including unauthorised abstraction and works affecting watercourses

Beyond that general list, the specific duties that bind you come from two places, and both are easy to overlook.

Your own permits and consents. Environmental permits, trade effluent consents, abstraction licences and bespoke consents routinely contain a condition requiring the operator to notify the regulator of specified events, commonly "without delay" or within a fixed number of hours. That condition is the obligation most often breached in practice, because the site treats the spill as the incident and the notification as administration. Breaching the condition is a separate offence from causing the pollution.

The Environmental Damage Regulations. The Environmental Damage (Prevention and Remediation) (England) Regulations 2015 impose a duty to notify the enforcing authority where there is an imminent threat of environmental damage, or where there are reasonable grounds to believe that environmental damage has occurred. The threshold is "environmental damage" as the regulations define it — serious harm to protected species, habitats, surface or ground water, or land — so it does not capture every minor spill. But note that the duty bites on an imminent threat, before any harm has actually happened, and on reasonable grounds to believe, not on confirmation.

The offences, and what they carry

For England and Wales, the central provision is regulation 38 of the Environmental Permitting (England and Wales) Regulations 2016. It is an offence to:

• operate a regulated facility without an environmental permit, or otherwise than in accordance with one
• cause or knowingly permit a water discharge activity or groundwater activity without a permit, or otherwise than in accordance with one
• fail to comply with, or contravene, a permit condition — a free-standing offence, independent of whether any pollution resulted

Waste adds its own layer: depositing, treating or disposing of controlled waste without the appropriate authorisation is an offence under the Environmental Protection Act 1990, alongside the separate duty of care obligations on waste transfer.

Penalties. On summary conviction, a fine or imprisonment for up to 12 months. On conviction on indictment, a fine or imprisonment for up to 5 years. Fines on corporate defendants are not capped, and sentencing for environmental offences is turnover-linked, which is why the figures reported in the trade press for large contractors look disconnected from the volume of material actually spilled.

Two features of this regime deserve particular attention from anyone running sites:

• Much of it does not require intent. "Causing" a water discharge has been interpreted broadly, and a pollution incident resulting from inadequate or poorly maintained equipment is treated accordingly. Not having meant it is not a defence.
• Poor maintenance is an aggravating factor at sentence. A bunded store that was never inspected, an interceptor that was never emptied, a spill kit that was empty — these move a case up the sentencing range rather than explaining it away.

It does not always end in prosecution. The Environment Agency's published response options run from a warning, through a formal caution, to prosecution, and for some offences it can accept an enforcement undertaking — a binding offer to put things right and contribute to environmental improvement — or impose a variable monetary penalty instead of prosecuting. Which route a case takes depends heavily on the operator's conduct: whether the incident was self-reported promptly, whether the response was competent, and whether the records stand up.

That last point is where incident recording stops being paperwork and starts being the thing that determines the outcome.

What to record, at the time

An incident record assembled weeks later from recollection is worth very little, and a regulator can usually tell. Capture, on the day:

1. Time of discovery, and separately the estimated time the incident began, if different
2. Substance and estimated quantity — and the basis for the estimate, such as the drum size or the pump rate and duration
3. The pathway — surface water drain, foul drain, soakaway, overland flow, direct to watercourse. The pathway is usually what determines severity
4. The receptor — which watercourse, which drain network and where it discharges, which designated site if any is downstream
5. Weather and ground conditions, because heavy rain and saturated ground change both the spread and the regulator's view of foreseeability
6. Actions taken and when — containment, absorbents, drain blockers, isolation, pumping out, specialist contractor attendance
7. Notifications — who was told, at what time, on what number, and what they said to do
8. Photographs, taken before clean-up as well as after. The pre-clean-up photographs are the ones you cannot recreate and the ones most likely to matter

Self-report rather than wait. Prompt self-reporting is consistently treated as mitigation, and a regulator finding out independently — from a water company, an angling club or a member of the public — is consistently treated as aggravation. The calculation is not close.

Common mistakes

• Calling the HSE, or no one. RIDDOR and environmental reporting are separate duties with separate regulators.
• Treating the permit condition as satisfied by cleaning up. Failing to notify is its own offence, whatever happened to the spill.
• An out-of-date contact board. The Welsh number is not the English one, and Scotland's line is not operator-staffed overnight.
• Cleaning up before photographing. The evidence that establishes extent is gone within the hour.
• Recording the spill but not the pathway. Quantity without pathway tells a regulator almost nothing about severity.
• Deciding internally that it is below the threshold. Where there are reasonable grounds to believe damage has occurred, the duty to notify does not wait for your own confirmation.
• No incident log at all. The absence of a contemporaneous record is itself a finding on an ISO 14001 audit and an unhelpful starting point in an investigation.

How this connects to your wider environmental reporting

An incident log is the part of an environmental management system that is least used and most consequential. It sits directly behind the spill response procedures in your Environmental Management Plan, and it is among the first records an ISO 14001 auditor asks for — specifically to test whether the plan describes what the site actually does.

It also has a longer reach than most site teams expect. Incident history appears in pre-qualification questionnaires and tender submissions, where the question is rarely whether you have had incidents and almost always whether you can show how you handled them. A log that was kept properly, on the day, with photographs attached, is a credible answer. A reconstructed one reads exactly like what it is. VerdCore logs incidents against the site they happened on with evidence attached, as part of the same environmental management plan software that holds the plan they are tested against.