Those black flecks and impurities could be a the result of a number of issues:
Dirt may have worked its way into your plumbing system.
If you have hard water, it could be calcium, iron or magnesium deposits.
There may be small particles of rubber from your plumbing or rust particles from corroded pipes getting into your water.
If you’re already using a water filtration system to purify water, these imperfections could be carbon from the water purifier filter.
While small amounts of these substances are not typically hazardous to your health, it is best to determine the origin. You can first try to filter your tap water. A Roto-Rooter plumbing and drain professional also can inspect your plumbing system to find out where the impurities are coming from.
There are a few different home water treatments available to purify your water. For instance, a water purifier filters impurities through the use of a physical barrier or with chemicals. There are three ways to filter your tap water: distillation, reverse osmosis and carbon filtering. Basic carbon filtering is the quickest and easiest. Options include pitchers, faucet-mounted or countertop water filters.
If your water is hard, it likely contains high amounts of minerals such as magnesium and calcium. A water softener can be installed in your home to remove these minerals in your water. Before selecting a water softener for your home, it is important to call an expert to determine what you need.