The United Way of Sarnia-Lambton is less than 10 per cent from its fundraising goal of $1.85 million.
Executive Director Dave Brown says three large corporate donations this week have had a large impact on the campaign.
During its volunteer recognition luncheon on Thursday, Imperial Oil announced it will contribute $454,000, while earlier this week, Shell announced its total of just over $240,000 and LanXess and its employees have pledged $127,000.
"In addition, we had a few schools, the Canada Border Services, and other employee campaigns wrap up", said Brown.
He said a donation from Enbridge Pipelines is also expected soon.
The campaign ends on December 31.