MOLD IN YOUR WATER
Since mold loves wet environments, its just plain common sense that some molds may be contaminating your water. Mold spores may be in your water from mold growth in your municipal water supply pipes, your well, your water storage tank, your water softener tank, and your other water distribution equipment or inline water filters. Its also quite common for mold to grow in your faucet aerator (the screen assembly at the business end of your faucet). Any organic material present in your water will provide food for mold. The best way to assure your drinking pure mold free water is to distill it.
Since ingestion of mold spores is very dangerous to your health, you should be vigilant about keeping your faucet aerator clean and if you see any mold growth in your toilet tank or toilet bowl, around the sink drain, or if you fill a glass with water and smell a musty moldy like odor, you should have your water tested by a professional.
Most toxic molds require constant wetness to really flourish so your sink drains can harbor real nasty species from the faucet water, and toxic species can grow on all the organic matter in the drain pipe and drain trap. Your kitchen sink pipes, garbage disposals, and drain traps have lots of food remnants, soaps, grease, and oils, all of which make nice food for mold. Your bathroom sink and shower/tub drains and drain traps have lots of skin cells, hair, shampoos, and soaps that make good food for many nasty molds. If you smell a foul odor coming out of any of your drains, its time to clean out the traps and the plumbing above the traps. Call a professional if you can’t do this yourself. You should routinely clean all your drains at least every 3 months to keep your water flowing as intended and to reduce the mold food buildup.
Keep in mind that bleach will not kill mold at any strength, it will kill most odor causing bacteria that can also be living in your drains, but it will not kill any of the mold or its related spores which will enter your breathing air. Likewise, the minor amount of chlorine in your drinking water will have no effect on any mold in your water supply system.
NEVER EVER mix any drain cleaners with bleach, and never pour bleach down the drain within a week of using any drain cleaner. Read the drain cleaning labels for all warnings and cautions and abide by them. Also keep in mind that the drain cleaner may do a reasonable job of removing the organic matter, grease, and soap scum build up in your drains which will reduce the food supply and mold odor, but they may not actually kill the molds living there.