Water softener Sizing Chart
Number of people in the house |
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Hardness in Grains Per Gallon | 1 to 2 people* | 3 to 4 people* | 5 to 6 people* | 7 to 8 people* |
---|---|---|---|---|
0-10 GPG | 16,000 Grain | 24,000 Grain | 32,000 Grain | 40,000 Grain |
11-20 GPG | 24,000 Grain | 32,000 Grain | 40,000 Grain | 48,000 Grain |
21-30 GPG | 32,000 Grain | 40,000 Grain | 48,000 Grain | 64,000 Grain |
31-40 GPG | 40,000 Grain | 48,000 Grain | 64,000 Grain | 80,000 Grain |
41-50 GPG | 64,000 Grain | 80,000 Grain | 96,000 Grain | 110,000 Grain |
51-75 GPG | 64,000 Grain | 80,000 Grain | 110,000 Grain | 110,000 Grain |
76-100 GPG | 80,000 Grain | 96,000 Grain | 110,000 Grain | 110,000 Grain |
Water Hardness Scale | ||
Grains/Gal | mg/L or PPM | Classification |
---|---|---|
Less than 1 | Less than 17.1 | Soft |
1-3.5 | 17.1-60 | Slightly Hard |
3.5-7 | 60-120 | Moderate Hard |
7-10 | 120-180 | Hard |
Over 10 | Over 180 | Very Hard |
1 gpg = 17.1 mg/L = 17.1 ppm |