How Long Does a 40 lb Bag of Water Softener Salt Last?
About six weeks for a family of four on 10 gpg water, three weeks on 20 gpg. Tables for 40 lb, 50 lb and 25 kg bags, and why yours may differ.
Daniel Moreno
San Antonio Water Hardness: 15–20 gpg, Softener Setting and Salt
SAWS puts San Antonio’s water at 15–20 gpg, very hard on the USGS scale. Why, what to set a softener to, sizes, salt use and how to handle the scale.
Austin Water Hardness: 5.4 gpg Average, Softener Setting and Salt
Austin’s tap water averaged 93 ppm (5.4 gpg) in 2025, range 70–126 ppm. Why it’s softer than the rest of Texas, what to set a softener to and salt use.
Water Softener Hardness Setting: What Number to Enter
Enter your hardness in gpg, plus 5 per ppm of iron, using the high end of any range. A worked table shows what a wrong setting costs.
Water Hardness Scale: Soft to Very Hard in gpg, ppm and mg/L
Soft up to 60 mg/L, moderately hard to 120, hard to 180, very hard above. Charts by gpg and ppm in every unit, a converter and what each level means.
How to Remove Limescale: Kettles, Shower Heads, Taps and More
Vinegar or citric acid, left long enough, then rinsed. Methods and contact times for kettles, shower heads, taps, glass and water heaters, plus safety.
How Much Salt Does a Water Softener Use? Tables and Calculator
About 350 lb a year for a family of four on 10 gpg water, or twice that on the highest salt setting. Tables by hardness, the salt setting explained, and fixes.
What Is Hard Water? Causes, Signs and the Hardness Scale
Hard water is high in dissolved calcium and magnesium. The USGS scale in every unit, why kettles scale up, the signs and how to find your own figure.
Las Vegas Water Hardness: 16 gpg, Softener Setting and Salt Use
Las Vegas tap water is 280 ppm, or 16 gpg, per the LVVWD’s 2026 report. What to set your softener to, which size you need and how much salt it uses.
What Size Water Softener Do I Need? Calculator and Sizing Table
Multiply people by 80 gallons and your hardness in gpg, then by 7 days. A calculator, a sizing table for 1–6 people and three worked examples.
