Clogged Drainage Services for Canadian Homes- Clogged Drain Repair Services in Niagara Region. » When your drains start to fail, you want to make sure that the job is done right. That's why McDowell Drain Services offers professional clearing of blocked drains. Our expertise ensures that your drain systems will work reliably for years to come, saving time, money and stress down the line. Google Guaranteed & locally trusted. Get in touch today to get started.