The PSNI circulated the warning after concerns were raised by parents about young people congregating on wasteland where once stood the old Convent Grammar School.
Police patrols have been increased in and around the site following reports of anti-social behaviour at the weekends.
Chairman of Springhill Community Group Tony McLaughlin has also appealed to parents to keep tabs on the whereabouts of their children. He said the last thing anyone wanted was for a young person to get injured.
PSNI Inspector Alison Ferguson confirmed to the Strabane Chronicle that local taxi firms had been spoken to and “advised of their responsibilities relating to the law, minors and alcohol”.
Inspector Ferguson said, “As part of our engagement with local taxi firms, we have reminded them of their responsibilities following an issue raised by members of a local community group.
“Over a recent weekend officers conducted focused patrols in and around the old Convent School site near Mount Carmel Heights. These patrols relate to recent reports of anti-social behaviour within that wasteland area.
“What we are reminding the taxi companies is that it is an offence to sell or deliver alcohol to any person under the age of 18 and that it is an offence for any person to purchase intoxicating liquor for delivery to, or consumption by a minor.”
Tony McLaughlin said that there were concerns that if the congregating at the old school continued, someone would eventually end up hurt or even worse.
“We would be saying to parents to be aware and to know where their children are,” Mr McLaughlin said.
“The last thing we want is for someone to end up getting hurt and all we are doing is appealing to young people to have a bit of sense and for parents to keep a good eye out.
“These young people aren’t causing problems in Springhill Park but they are coming into the estate afterwards and we would just be concerned for them.”