« Back to News & Notices

Water Measurements

Hardness. We measured 24 grains of hardness at the office for the month of June 2024.  Reading was taken on June 27, 2024.

Average Household Usage: Average household usage for June was 8.120 gallons; May was 5,057 gallons; April was 4,443 gallons; March was 4.116 gallons; February was 4,455 gallons; January 4.197 gallons; December was 6,081; November was 6,358 gallons; October was 8,602 gallons; August was 9,930; July was 8,668 gallons; June was 6,392; May was 4,966 gallons; April was 4,745 gallons; February was 4,333; January 2023 was 4,477 gallons. The average Entranosa bill was $83. 

Grain per gallon (gpg) is a unit of water hardness defined as 1 grain (64.8 milligrams) of calcium carbonate dissolved in 1 US gallon of water (3.785412 L). It translates into 1 part in about 58,000 parts of water or 17.1 parts per million (ppm).

Calcium and magnesium ions present as sulfates, chlorides, carbonates and bicarbonates cause water to be hard. Water chemists measure water impurities in parts per million (ppm). For understandability, hardness ordinarily is expressed in grains of hardness per gallon of water (gpg).

How many mg/l in 1 grain per gallon? The answer is 14.253768.

1 gallon of water = 8.34 pounds.