The electricity supplied along power lines is much like the water coming out of a faucet. It is perfectly safe for normal use; however, it does contain minor impurities. Should you desire entirely pure water, then filtering out these impurities is left up to you.
Electricity works in the same manner. Even though CenterPoint Energy is dedicated to providing reliable and high quality electric service, it is not possible to provide a perfect power supply that is steady and continuous without occasional interruptions or fluctuations. Learn more about obtaining “pure“ electricity.