5-person household — by hardness
Modeled entry and mid‑tier ion‑exchange totals for a 5-person home. Totals scale salt and operating costs by household size relative to a typical 4‑person home.
5-person household at a glance
A 5-person home uses about 193 gallons of indoor water a day. Pick your hardness band for the full breakdown.
| Hardness band | Suggested size (grains) | Salt/month (entry) | Entry 5-yr | Mid-tier 5-yr |
|---|---|---|---|---|
| Soft (0–3.5 gpg) | 24k | 25 lb | $1,600 | $2,616 |
| Moderately hard (3.5–7 gpg) | 24k | 38 lb | $1,778 | $2,776 |
| Hard (7–10.5 gpg) | 24k | 50 lb | $1,956 | $2,937 |
| Very hard (10.5+ gpg) | 32k | 75 lb | $2,312 | $3,257 |
Other household sizes: 2-person · 3-person · 4-person
See also: all household sizes · by hardness band