8 Signs You're Infected With a Parasite

You ingested (or swam in) some questionable water

Whether you were traveling abroad and drank from the tap or went to the lake around the block and splashed around for a bit, ingesting contaminated water is one of the most common causes of parasites, according to Daliah Wachs, MD, a board-certified family physician in Las Vegas. In fact, before you drink that next glass of water, here are some things you need to know about whether or not your tap water is safe.