Environment Agency Pollution Incident Response Planning

Pollution Incident Response Planning (PIRP) is the Environment Agency (EA) approach to making sure organisations can prevent, control and report pollution incidents quickly and effectively. For UK sites that store, use or transfer oils, fuels, chemicals or wastewater, a practical PIRP is one of the most cost-effective ways to reduce environmental risk, protect drains and waterways, and demonstrate environmental compliance.

What problem does Pollution Incident Response Planning solve?

Question: What typically goes wrong during a spill or pollution incident?

Solution: Most serious outcomes happen because response actions are delayed, responsibilities are unclear, the right spill control equipment is missing, or drains are left unprotected. PIRP solves this by defining who does what, what equipment is needed, and how to isolate the pollution pathway (especially surface water drains) before the incident escalates.

For water and wastewater utilities, industrial processing sites, maintenance depots, logistics yards, and construction compounds, the common pathways to pollution include:

• Spills reaching surface water drains and discharging to watercourses.
• Overfills from tanks or bowsers during deliveries or transfers.
• Leaks from IBCs, drums, pumps, hoses, valves and temporary connections.
• Washdown water carrying contaminants into drainage systems.

What does the Environment Agency expect from a PIRP?

Question: Is PIRP just paperwork, or does it need to work on site?

Solution: The EA expects a plan that is site-specific, easy to follow, and supported by training and the right spill response products. A workable PIRP usually includes:

• Risk assessment of pollutants, volumes, locations and spill routes to drains and water.
• Site drainage awareness: mapping of surface water and foul drains, interceptors, outfalls, and isolation points.
• Control measures (prevention and containment) such as bunding, drip trays and safe transfer practices.
• Spill response procedures for different incident types (oil, chemical, sewage, diesel, hydraulic fluid).
• Incident reporting steps and emergency contact numbers.
• Training and exercises so staff can deploy drain protection and spill kits quickly.
• Review and improvement after changes, incidents or drills.

Reference guidance: Environment Agency, Pollution prevention guidance (PPG) and GOV.UK environmental incident reporting routes (England). For pollution incidents in England, the EA incident hotline is commonly referenced as Report an environmental incident.

How do we build a practical PIRP for our site?

Question: What is a sensible, step-by-step way to create a Pollution Incident Response Plan?

Solution: Build the plan around real spill scenarios on your site, then match each scenario with containment, drain protection, clean-up, and reporting actions.

1) Identify pollutants, quantities and highest-risk activities

List chemicals, oils, fuels, process liquids and waste liquids. Note where they are stored (bunded area, yard, plant room), typical container types (drums, IBCs, tanks), and transfer activities (deliveries, decanting, dosing, pumping, tanker connections). High-risk tasks often include unloading tankers, refuelling, IBC handling, and maintenance activities with hydraulic systems.

2) Understand your drains and isolate the pathway

PIRP should make it easy for responders to answer: where will the liquid go in the first 60 seconds? Identify nearest drain covers, catch pits, channels, interceptors and outfalls. Mark drain types (surface water vs foul) and record any drain isolation valves. If you cannot isolate quickly with valves, plan to isolate using drain covers, drain mats and drain blockers where suitable.

3) Select spill control equipment that matches the risk

Choose equipment based on likely spill types and volumes, access constraints, and speed of deployment. Typical spill management controls include:

• Spill kits for immediate response (oil-only, chemical, and maintenance/general purpose kits).
• Absorbents such as pads, socks, rolls and pillows for containment and recovery.
• Drain protection (drain mats/covers) for rapid isolation of surface water drains.
• Drip trays under pumps, valves, filters, generators and coupling points to prevent chronic leaks becoming pollution.
• Bunding to reduce the likelihood of a loss leaving the storage area.

Internal links to relevant spill management solutions:

• Spill Kits
• Spill Absorbents
• Drip Trays
• Bunding and Spill Containment
• Drain Protection

4) Write response actions in a simple decision format

Question: What should a trained responder do first?

Solution: Use a short sequence that prioritises safety, stopping the source, protecting drains, and then clean-up. A typical on-site sequence is:

1. Make safe: assess hazards (chemical, flammable, confined space, traffic). Use suitable PPE.
2. Stop the source: close valves, upright container, isolate pump, stop transfer, use temporary leak control if trained and safe.
3. Protect drains: deploy drain covers/mats or use bunding/booms to prevent entry to surface water drains.
4. Contain: use absorbent socks/booms to encircle and prevent spread.
5. Recover and clean: apply absorbent pads/rolls, collect saturated materials, and store as controlled waste.
6. Report: escalate internally and report externally as required (EA and water company where relevant).
7. Restock and review: replace used absorbents and update the plan after learning.

How does PIRP support environmental compliance?

Question: What compliance value does a Pollution Incident Response Plan provide?

Solution: PIRP provides evidence that you have identified pollution risks and implemented proportionate controls. This supports duty-of-care expectations and may be referenced during audits, incident investigations, regulator visits, or when demonstrating best practice under an Environmental Management System (EMS) such as ISO 14001.

It also helps you meet practical expectations around:

• Preventing contaminated run-off from leaving site via surface water drains.
• Controlled storage (bunding and secondary containment) for oils and chemicals.
• Emergency preparedness for foreseeable spill scenarios.
• Training to ensure spill response is effective and consistent.

What does a good PIRP look like in real operations?

Question: Can you give examples of how PIRP is applied on typical UK sites?

Solution: The best plans are written around the site layout and the tasks people actually perform.

Example: Water and wastewater utility yard

• Pollutants: diesel, oils, treatment chemicals, contaminated water.
• Controls: drip trays under generators and pumps, bunded chemical storage, drain covers near vehicle wash areas.
• Response: isolate surface water drains immediately during refuelling spill, deploy oil-only absorbent socks and pads, then report if any release reaches drainage or water.

Example: Manufacturing and engineering maintenance

• Pollutants: hydraulic oil, coolants, solvents.
• Controls: drip trays under transfer points, labelled spill kits close to risk areas, clear waste handling for saturated absorbents.
• Response: stop leak at hose/quick-release, contain with absorbent socks, protect nearby drains, clean and decontaminate the area.

Example: Distribution yard with IBCs and drums

• Pollutants: oils, detergents, chemicals in IBCs.
• Controls: bunded IBC stations, spill pallets, drain protection at yard drains.
• Response: isolate drain, contain and recover using chemical spill kit if unknown liquid, then verify SDS and disposal route.

How often should PIRP be reviewed and tested?

Question: When does a Pollution Incident Response Plan become out of date?

Solution: Review PIRP at least annually, and whenever you change stored chemicals, add tanks/IBCs, alter drainage, modify processes, or after any spill, near miss or drill. Conduct toolbox talks and periodic exercises so staff can deploy spill kits and drain protection rapidly under realistic conditions.

What should we do if a spill reaches a drain or watercourse?

Question: If pollution has left our control, what is the correct response?

Solution: Treat this as a time-critical incident. Continue containment where safe, deploy drain protection downstream if possible, and report promptly via the EA incident reporting route for England. If there is risk to people, call 999. Keep a record of the time, material, estimated quantity, actions taken, and who was notified.

External reference: GOV.UK, Report an environmental incident (England).

Need help choosing spill kits, drain protection and bunding for PIRP?

Question: How do we ensure the spill response equipment in our PIRP is actually suitable?

Solution: Match equipment to your worst credible spill, the likely liquid types, and the nearest drains. Position spill kits where incidents start (transfer points, loading bays, chemical stores, generator areas) and ensure drain protection is accessible within seconds, not minutes.

Explore Serpro spill management options for PIRP implementation:

• Spill kits for oil, chemical and maintenance spills
• Drain covers, drain mats and drain blockers
• Bunding and secondary containment for environmental compliance
• Drip trays to prevent leaks becoming pollution incidents

Citations: Environment Agency/GOV.UK pollution prevention and incident reporting guidance: https://www.gov.uk/government/collections/pollution-prevention-guidance-ppg, https://www.gov.uk/report-an-environmental-incident.