11.1 Environmental Basics: Pollution, Waste & Duty of Care
Key Takeaways
- IOSH's Managing Safely fact sheet states the programme covers health, safety and environmental basics in a single programme.
- Pollution is traced with source – pathway – receptor; breaking any one link prevents the harm.
- Surface water drains often discharge untreated to a watercourse, while foul drains go to treatment — confusing the two is the classic site pollution incident.
- The waste duty of care (Environmental Protection Act 1990, section 34) requires secure storage, an authorised carrier, an accurate description, and waste transfer notes kept for at least two years.
- Serious environmental incidents go to the environmental regulator, not the HSE — in England the Environment Agency 24-hour incident hotline is 0800 80 70 60.
11.1 Environmental Basics: Pollution, Waste & Duty of Care
Quick Answer: IOSH's own Managing Safely fact sheet says the programme covers health, safety and environmental basics in a single programme. The environment means air, water and land and the living things they support. Pollution is the release of something that harms them; trace it using source – pathway – receptor. Waste carries a legal duty of care under the Environmental Protection Act 1990 (section 34): keep it secure, hand it only to an authorised carrier, describe it accurately, and keep the waste transfer note for two years. Report serious incidents to the environmental regulator — in England the Environment Agency 24-hour incident hotline, 0800 80 70 60.
Managers often meet environmental duties for the first time at the worst possible moment: a drum has split, the yard drain has taken the runoff, and a regulator is asking questions. Managing Safely puts environmental basics alongside safety basics for a simple reason — the same manager, the same site walk, the same decisions about storage, housekeeping, contractors and training decide both outcomes.
What "the environment" means at work
Keep the definition concrete and manager-sized:
| Element | What you are protecting | Typical workplace pressure |
|---|---|---|
| Air | Local air quality and the wider atmosphere | Dust, fumes, solvent vapour, exhaust, refrigerant leaks, smoke from burning |
| Water | Rivers, streams, lakes, groundwater, coastal water | Spills to surface water drains, wash-down water, leaking bunds, silt runoff |
| Land | Soil and the ground beneath your site | Buried or spilled fuel and chemicals, poor drum storage, fly-tipped waste |
| Living things | People, animals, plants and habitats | Everything above, plus noise, light and odour affecting neighbours |
Environmental harm differs from safety harm in one important way: it often has no immediate victim on site. Nobody is bleeding, so nothing feels urgent — while the pollutant is already travelling.
Pollution and the source – pathway – receptor model
Pollution is the introduction of a substance or energy into the environment in a quantity or manner that causes harm. The manager's tool for thinking about it borrows the same logic as hazard and hazardous event:
- Source — what could escape (diesel, solvent, effluent, dust, silt)
- Pathway — how it would travel (surface water drain, ditch, soil, wind, spillage across hardstanding)
- Receptor — what it would reach and harm (a watercourse, groundwater, neighbours, a habitat)
Break any one link and the pollution does not happen. That is the environmental equivalent of the hierarchy of control, and it explains why bunding, drain protection and segregation earn their cost.
The single most common manager error: the wrong drain
Most sites have two drainage systems and they behave very differently:
| Drain type | Where it goes | What may enter it |
|---|---|---|
| Foul drainage | Sewer, then a treatment works | Sanitary effluent and, only with the water company's consent, specified trade effluent |
| Surface water drainage | Often straight to a watercourse, untreated | Clean rainwater only |
Everything tipped, washed or spilled into a surface water drain can reach a river within minutes with no treatment at all. Colour-code and label drain covers, keep drain seals or mats with the spill kit, and make "which drain is that?" a standing question on site inductions.
Waste and the legal duty of care
Waste is any substance or object the holder discards, intends to discard or is required to discard. Business waste is controlled waste, and some of it is hazardous waste — the same materials that already sit in your COSHH assessments (solvents, oils, batteries, aerosols, contaminated absorbents, fluorescent tubes, some electrical equipment).
The duty of care in section 34 of the Environmental Protection Act 1990, supported by the Waste (England and Wales) Regulations 2011, is the part every manager should be able to recite:
| Duty | What it means on your site | Evidence |
|---|---|---|
| Keep waste secure | Store it so it cannot escape, blow away, leak or be scavenged | Covered, contained, bunded storage |
| Prevent unauthorised disposal | Do not let waste be dumped, burned or tipped illegally | Site rules; contractor control |
| Transfer only to an authorised person | Check the carrier's registration and the receiving site's permit or exemption | Carrier registration number checked, not assumed |
| Describe the waste accurately | Correct description and waste code so the next holder can handle it lawfully | Waste transfer note |
| Keep the records | Retain waste transfer notes for at least two years | Filed and produced on request |
The duty does not end at the gate. If your waste is fly-tipped by a "man with a van" you never checked, the failure to check is yours, and breaching the duty of care is a criminal offence.
Hazardous waste carries extra requirements — it must not be mixed with non-hazardous waste or with a different hazardous waste, and it moves on a consignment note rather than an ordinary transfer note.
Storage that prevents the incident
| Control | Practical standard |
|---|---|
| Bunded oil storage | Under the Control of Pollution (Oil Storage) (England) Regulations 2001, secondary containment must hold at least 110% of the largest container, or 25% of aggregate capacity, whichever is greater |
| Drum and IBC storage | On impermeable hardstanding, away from drains and traffic routes, lids closed, labels legible |
| Spill response | Kits sited where spills actually occur, restocked after use, and people trained before the day they need them |
| Segregation | Separate incompatible substances and keep hazardous waste apart from general waste |
| Deliveries | Supervise fuel and chemical deliveries; overfilling during an unsupervised delivery is a classic pollution incident |
Who regulates, and when to report
Environmental protection is enforced separately from health and safety — a different regulator, different law, and a different set of powers from the HSE inspector in Section 5.3.
| Nation | Environmental regulator |
|---|---|
| England | Environment Agency |
| Wales | Natural Resources Wales |
| Scotland | Scottish Environment Protection Agency (SEPA) |
| Northern Ireland | Northern Ireland Environment Agency |
For a serious or ongoing incident — a spill reaching a watercourse, a significant release to air or land — the response is the same shape as a RIDDOR escalation: contain what you safely can, then report without delay. In England the Environment Agency incident hotline is 0800 80 70 60, a 24-hour service, and incidents can also be reported through the GOV.UK online reporting service. Know your local permit conditions too: permitted sites usually have their own notification duties.
Consequences of getting it wrong mirror the moral, legal and financial framing of Chapter 1: prosecution and fines, clean-up and remediation costs that dwarf the value of the material lost, permit conditions tightened, contracts lost, and a local reputation that takes years to rebuild.
Common exam traps
| Trap | Correction |
|---|---|
| "The environment module is only about recycling" | It covers air, water and land, pollution pathways, waste duty of care and management systems |
| "The duty of care ends when the skip leaves" | It follows the waste; you must check the carrier and keep the transfer note for two years |
| "Any drain is fine if it is outside" | Surface water drains often discharge untreated to a watercourse |
| "Environmental incidents go to the HSE" | Environmental incidents go to the environmental regulator — EA, NRW, SEPA or NIEA |
| "It is only pollution if someone is harmed" | Harm to water, land, air or habitat is enough; no human casualty is required |
Manager checklist
- Do I know where every drain on my area goes — foul or surface water?
- Is fuel and chemical storage bunded, labelled, closed and away from drains?
- Do we check the carrier registration and destination for every waste stream?
- Are waste transfer notes complete and kept for two years?
- Are spill kits present, stocked and understood before an incident?
- Does everyone know who to call and that serious incidents are reported without delay?
A drum of solvent splits in the yard and the liquid runs into a surface water drain. Why is this more serious than the same spill entering a foul drain?
Which set of actions correctly describes the waste duty of care for a business?
Under the source – pathway – receptor model, what does the pathway represent?
A significant quantity of diesel has escaped from a site and is entering a nearby stream in England. Who should be notified without delay?