Standing water and icy paths are among the most common winter safety issues on commercial sites. Once colder and wetter conditions set in, access routes such as walkways, entrances and service areas often become the first places where drainage problems appear.

In many cases, these issues are treated as surface-level concerns. However, they are usually a sign that winter access route drainage is not performing as it should. Understanding how drainage affects safety during winter helps site managers reduce risk, maintain access and prevent disruption.

Why access routes are more vulnerable during winter

Winter places additional strain on drainage systems. Higher rainfall, reduced evaporation and seasonal debris all contribute to water remaining on surfaces for longer periods. When temperatures drop, this water can freeze, creating repeated ice formation in the same locations.

Drainage systems that cope adequately in warmer months may struggle once winter conditions persist. Gullies that are partially blocked, channels with reduced capacity or damaged pipework can all prevent surface water from draining away efficiently.

Common access routes affected by winter drainage issues

Drainage-related safety problems often appear first in areas used most frequently. These typically include:

  • Building entrances and exits
  • Pedestrian walkways
  • Car parks and drop-off zones
  • Service yards and loading bays
  • Emergency and fire access routes

When water pools in these locations, it creates both safety risks and operational challenges. Repeated ice formation increases slip risk, while flooding can restrict access for staff, visitors and deliveries.

How drainage issues contribute to slip and trip risk

Standing water and icy paths are rarely isolated issues. They usually result from restricted drainage flow. Common causes include:

  • Blocked or silted gullies holding water
  • Surface drains that cannot cope with winter rainfall volumes
  • Overflowing gutters directing water onto walkways
  • Poor falls or damaged channels causing water to collect
  • Underground defects restricting drainage capacity

Once water remains on the surface, freezing temperatures turn it into a recurring hazard. Treating ice without addressing the underlying drainage issue often results in the problem returning repeatedly.

Early warning signs your access routes may be at risk

Identifying drainage problems early reduces the likelihood of accidents and disruption. Signs to look out for include:

  • Water pooling after rainfall rather than draining away
  • Gullies holding water for extended periods
  • Ice forming in the same locations on multiple days
  • Grit washing away quickly due to flowing surface water
  • Water crossing pedestrian routes or entrances
  • Surfaces remaining wet long after rain has stopped

These indicators suggest that winter access route drainage may already be under strain.

What site teams can do immediately

There are several practical steps site teams can take to manage risk while drainage performance is assessed.

Regular visual inspections during and after rainfall help identify problem areas early. Clearing visible debris from gullies, channels and grates can restore some flow and reduce surface water build-up. Marking recurring problem areas also helps identify where longer-term drainage work may be required.

Temporary safety controls such as signage or restricted access may be needed until drainage issues are resolved. These measures support safety but should not replace professional drainage assessment where problems persist.

When winter access route issues need professional drainage support

Some drainage problems require specialist intervention. Professional support should be considered when:

  • Standing water persists despite basic clearing
  • Ice forms repeatedly in the same locations
  • Access routes flood during moderate rainfall
  • Gullies or drains do not respond to simple maintenance
  • There are signs of underground defects or collapsed pipework

At this stage, services such as high-pressure jetting, CCTV drain surveys or repairs are often required to restore proper drainage performance.

How Drain & Sewer Services supports safe access routes in winter

Drain & Sewer Services works with commercial sites to reduce winter drainage risk and improve access route safety. Our support includes:

With extensive experience across commercial environments, our team helps ensure drainage systems support safe and reliable site access throughout winter.

Frequently asked questions

Why does water keep pooling on walkways in winter?
This usually indicates restricted drainage flow caused by debris, silt or reduced capacity during higher rainfall.

Is standing water always a drainage problem?
In winter, persistent standing water is often linked to drainage issues rather than surface conditions alone.

Why does ice keep forming in the same places?
Repeated ice formation suggests water is not draining away and is freezing overnight.

When should I call a drainage specialist?
If standing water or ice persists despite basic clearing, professional drainage assessment is recommended.

How can drainage help reduce slip risk?
Effective drainage removes surface water before it freezes, reducing the likelihood of icy paths.