Potable water servicing companies provide various services related to ensuring your drinking water is safe and clean. From testing to maintenance and repairs, these companies can help make sure your drinking water is up to par. Take a look at some of the services you can expect from a potable water servicing company. Water Testing Services Portable water servicing companies specialize in testing the quality of your drinking water. They can accurately test for contaminants, bacteria, and other unhealthy substances that may be present in your water supply.