Let’s not ignore the most embarrassing possibility: your own home is the criminal. New PEX or PVC plumbing can leach volatile organic compounds (VOCs) for the first few months. These can smell and taste surprisingly soapy. If you recently had plumbing work done, let the water run for a minute before drinking.
Then there’s the dishwasher conundrum. You know those rinse aid tabs (Jet-Dry etc.)? They contain surfactants. If your dishwasher has a malfunctioning rinse aid dispenser, or if you load your dishes wrong, residue can stick to your glass. You taste the residue, not the water itself. Try hand-washing a glass and doing a blind taste test. If the soapy taste vanishes, blame your dishwasher, not your water supply.
Why does my water taste like blood? | Try Water
Is It Dangerous? (The Short Answer: Usually No)
I can almost hear you worrying: Am I drinking chemicals? In 99% of cases, no. High alkalinity water is perfectly safe to drink (just annoying). The algae compounds are gross but non-toxic at these levels. The only real danger is if the taste signals a pH level so high it starts corroding your pipes, but you’d notice metallic stains first.
However, if the soapy taste comes with a strong chemical smell (like petroleum or chlorine), stop drinking it and call your water utility. That could indicate a backflow issue or a treatment error. Better safe than sorry, my friend.