Issue with Ampersands in field values passed to Online Form from Email Template

We have an Email Template that gets sent out to customers after they complete a project with a link to an Online Form that we use for Surveys. The Online Form is associated to a Custom Record.

We pass several of the Project field values to the Online Form via the Link by adding each of the fields into the Link string.

Example: &custrecord_his_svcs_survey_proj_type=${project.jobtype}

This works perfectly to pass the field values to the Online form and when the Survey is submitted the Custom Record is created with all of the field values that were passed to it from the Email Template link, except if the field value contains an ampersand "&". If the field contains an ampersand, then the value that is set is cut off at the ampersand.