The normal potassium level in blood is 3.5 to 5.2 mEq/L. Levels between 5.2 to 6.0 mEq/L are called mild hyperkalemia (hyperkalemia means high potassium level in blood). Levels between 6.0 to 7.0 mEq/L is moderate and levels above 7.0 mEq/L are considered as severe hyperkalemia. It is very important to keep potassium levels in normal range as slight disturbances either high or low can lead to serious illnesses. Recommended daily intake of potassium is 2000mg or 51 MEq.