The Zipcode for Poland is. Poland is a village of Mahoning, Ohio in the Great Lakes region of the USA. It is located about 141 miles east-northeast of OH's capital city of Columbus.In the most recent US census the population of Poland was 2548. City/Zip code State.oland is a village of Mahoning, Ohio in the Great Lakes region of the USA. It is located about 141 miles east-northeast of OH's capital city of Columbus. In the most recent US census the population of Poland was 2548.
pH. The pH is a measure of the acidity of the water. The pH scale goes from 0 to 14, where pH 7 is neutral. If the pH is above 7, the water is basic; if it is below 7 the water is acid. The optimum pH for pool water is 7.4, since this is the same as the pH in human eyes and mucous membranes. A pH of 7.4 also gives good chlorine disinfection.
The ideal pH range for water is between 7.2 and 7.6. This means that the water is slightly basic. By maintaining the proper alkalinity of water, the pH will stay around the ideal levels. However, if the alkalin-ity gets too low, the pH can start to deviate and can begin to cause water quality problems.lkalinity of water is due to the presence of certain ions: carbonates, bicarbonates, and hydroxides (often referred to as alkaline salts). Bicarbonates are the most common cause of alkalinity and are found in almost all natural water sources, as are carbonates.