Cloudy water? Water in the distribution system is under pressure. Air sometimes dissolves in the water in the pressurized lines. At the faucet, the air gives water a "cloudy" or "milky" appearance. In fact many faucets have aeration features built in. The quality of the water is not affected by the entrained air. Let the water stand in an open container for a few minutes. The air in the water will disperse to the atmosphere.
The EPA guideline for drinking water sodium is 20 mg/L. This is a very low level, chosen because long term exposure may increase blood pressure in susceptible individuals. Excessive sodium may also produce a salty taste. The World Health Organization has a maximum contaminant level (MCL) of 200 mg/L for sodium. TCEQ does not currently have a standard for sodium.
pH is a measure of hydrogen ion activity in a solution. pH 7 is neutral, while pH's below 7 are acidic, and those above 7 are basic. TCEQ's standard for pH in Texas water is pH 7 or greater. EPA's pH guideline is 6.5 - 8.5. pH's below 6.5 are corrosive.
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