Review on 5 Gallon Water Bottle Pump - CHIVENIDO Water Dispenser for 5 Gallon Bottle with Reusable Screw Top or Crown Tops, USB Charging, Automatic Drinking Water Jug Pump for Home Use by Kaveen Reyes

The pump works well and is easy to install BUT gives the water a chemical taste. I suspected the main culprit was the flexible hose that came with it, so I removed it and sampled the water directly (i.e. the water previously exposed to the hose) and found that even now the water had the same chemical taste and adjusted sure the hose was contaminated it. I replaced the tubing with prewashed lab grade Tigon tubing and tested again with a new 3 gallon water bottle. This time the pumped water tasted mostly as it should, but there was still an easily detectable chemical flavor added by the innards of the pump itself. I estimate that the tube replacement eliminated about 98% of the bad taste. Overall, it's easy to install, easy to use, and easy to charge. The battery seems to last for several 3 gallon bottles. There's a reason I drink plain bottled water and would only use a pump that doesn't add any chemicals to my drinking water.