Cloudy water is caused by air bubbles in the water. It is neither a reason for alarm, nor a health risk. It usually happens during the coldest part of winter, when water temperatures are at their lowest.
Customers in the northern end of the CPWA system, generally in the Exit 10 to Exit 12 areas, will see this phenomenon more than customers in the rest of the water system. The reason is that during the winter months, the water that the CPWA purchases from the Saratoga County Water Authority remains predominantly in that part of the system and cloudy water is normally only seen in water originating in a surface water source, such as a lake or river. The SCWA takes its water from the upper Hudson River, while the CPWA's own sources are all groundwater wells.
Air is more soluble in water that is colder or as pressure increases. In the winter, as the source water for the SCWA nears freezing temperatures, air dissolves into the water easily and with the addition of pressure in the water mains, the air remains in solution until it reaches the customer's tap.
As the water is allowed to warm slightly in the piping of the customer's home, or after it is placed in a glass and pressure is relieved, the air will begin to come out of solution in the form of bubbles, much like a carbonated soft drink.
As stated earlier, this condition is not harmful and it is not necessary to allow the air to dissipate prior to drinking. It's just air. Once the cold days of February get past us, customers should see the cloudy water disappear for the remainder of the year.