The fire rescue says the cause of the Greenways Landfill site fire is not treated as suspicious.
Oxfordshire Fire and Rescue Service is in attendance at the incident in Sutton Courtenay.
Jack Bristow, 23, was in a van that was travelling along a road when a tree fell on to the cab.
Neighbours of the couple, whose home in Sutton Courtenay was recently ravaged by fire, start a fundraiser.
The pipe burst on Monday leaving those in the OX14 postcode area with no water or low pressure.
Thames Water says it hopes to have the full repair on the ruptured pipe finished on Thursday.
The water firm says it is diverting water and using tankers to keep taps running during the works.
The burst pipe has left those in the OX14 postcode area with low pressure or no water.
Those living near the site on Appleford Rd were urged to close windows and doors overnight.
