It takes 17.1 PPM to equal 1 GPG. If a test for hard water is measured in parts per million or milligrams per liter you can take the total hardness level and divide it by 17.1 to get hardness in grains per gallon. For example if your water test shows 250 mg/L hardness you actually have 14.62 grains per gallon.

Calculating Percent Volume/Volume (% v/v)

1. A percent v/v solution is calculated by the following formula using the milliliter as the base measure of volume (v):
2. % v/v = mL of solute/100 mL of solution.
3. Example:
4. X % = 5.0 mL HCl/100 mL of solution.
5. X/100 = 5.0/100.
6. 100X = 500.
7. X = 5.0% % v/v.

Definition: Percent by volume or volume percent is a common expression used for expressing concentration. It is also called %V/V and it is always expressed as percentage (%) and the units of the volume should be in mL. Another way to express this % is as the volume of solute in mL that are in 100 mL of solution.

Volume/volume percentage (v/v percent) is a measure of the concentration of a substance in a solution. It is expressed as the ratio of the volume of the solute to the total volume of the solution multiplied by 100.

To convert from mg/L to grains per gallon, multiply by 17.1.

Use the following information to convert gpg to ppm: 1 grain per U.S. gallon (gpg) = 17.1 milligrams per liter (mg/L) = 17.1 ppm (parts per million).

Measures of water hardness General guidelines for classification of waters are: 0 to 60 mg/L (milligrams per liter) as calcium carbonate is classified as soft; 61 to 120 mg/L as moderately hard; 121 to 180 mg/L as hard; and more than 180 mg/L as very hard. Lime scale buildup inside a water pipe.

Hardness 100 – 200 ppm (calcium carbonate) Water is in the range of 100 to 200 ppm of hardness is considered moderately ‘hard’ water.

In our experience, water over 100 or 150 ppm (approximately 8 – 10 grains/gallon) is hard enough to warrant water softening. When the water hardness exceeds 250 – 300 ppm, a water softener becomes somewhat of a necessity.

Concentrations less than 100 ppm are desirable for domestic water supplies. The recommended range for drinking water is 30 to 400 ppm.

Reverse osmosis filter systems

Currently, communities in over 30 states, or even the states themselves, have or had enacted bans on certain types of water softener discharge. Among them, in addition to Texas, are California, Connecticut, Massachusetts, Michigan, New Jersey, and virtually all other states in the Northeast and Southeast.

Generally, the GE Water Softener is a pretty good system that will likely get rid of your hard water problems, if you’re looking for a salt-based water softening system. It’s NSF certified and it can get rid of up to 95 grains per gallon — which is more than you’ll probably ever need.

6 days

These brands are highly efficient and have a minimal difference in terms of performance. Whirlpool water softeners are among the best of its kind for its high-flow mechanism and salt-saving technology. That’s also true for GE products, but they are relatively more expensive compared to Whirlpool products.

A high water level in your water softeners brine tank could be a malfunction in the brine line, a damaged valve, or a stuck float.

The water softener has a reserve capacity of 20 to 25% before it regenerates; this means that it regenerates when the resin beads are 75 to 80% saturated. During recharge (regeneration), it uses approximately 35 to 65 gallons of water, depending on the size of the water softener.

What are the Signs a Softener isn’t Working Properly?

1. Seeing hard water spots: Generally, with softened water you shouldn’t be cleaning hard water spots off your shower door.
2. Water Doesn’t Feel Soft: If you’ve ever had a water softener in your home, you can immediately feel the difference when soft water stops flowing.