What caused the Thames Water outage in Oxfordshire?

An 800mm trunk main burst near Eynsham, which disrupted pressure across parts of West Oxfordshire. Once the main was isolated and repaired, Thames Water began refilling the network with tanker support to stabilise flows. As reservoirs and pipes repressurise, some customers may see intermittent supply, air in pipes or cloudy water that should clear after briefly running cold taps.

Which areas were most affected by the Oxfordshire water outage?

Reports highlight communities around Eynsham, with significant impacts in Witney, Carterton and Burford. Thousands experienced no water or low pressure at various times. The scale reflected where the burst trunk main feeds local reservoirs and distribution zones. As refilling continues, pressure should improve unevenly, with high points and end-of-line streets often taking longer to normalise.

How did the outage affect schools and public services?

Over a dozen schools, including 15 reported by local media, announced emergency closures due to lack of water and low pressure. This disrupted lessons and childcare while buildings awaited safe supply. Public services prioritised essential needs and Thames Water deployed tankers to support refill. Reopening timing depends on stable pressure, updated guidance, and on-site checks by school leaders.

When will normal water service return after the Eynsham burst main?

Thames Water has repaired the pipe and started refilling the network, so supplies are gradually returning. Full normalisation depends on reservoir levels, removal of air pockets and pressure balancing across zones. Most customers should see steady improvement on 7 March and the following days. Watch company updates for confirmation of stable pressure and any water quality guidance.

Global Market Insights

Thames Water March 7: Oxfordshire Outage Closes Schools, Supply Restarts

ByHuzaifa Zahoor March 7, 2026March 7, 2026

The Thames Water outage is in focus after an 800mm water main burst near Eynsham, cutting supplies across parts of West Oxfordshire. Thousands faced no water or low pressure and over a dozen schools closed. Thames Water says repairs are complete and the network is refilling with tanker support, so supplies are returning. We look at what happened, the local impact, and why service reliability and operational risk matter for UK utilities and investors on 7 March.