Is Moderately Hard Water Bad for You?
The municipal water in Saltillo is perfectly safe to drink and poses no health risks. The effects of its 5.3 GPG hardness are cosmetic and related to comfort. You might notice mildly dry skin after showering or that your hair doesn't feel as soft as it could. The primary issue is that soaps and shampoos don't lather as richly, leaving a slight residue that can cause minor irritation for those with sensitive skin.
Choosing the Right Filter for Saltillo
For moderately hard water (3.5-7 GPG), a whole-house system is typically not necessary or cost-effective. The best approach is to target your drinking water. A quality pitcher filter (like Brita or ZeroWater) or a simple faucet-mount filter is perfectly adequate for improving the taste and removing chlorine.
A whole-house softener is a poor financial investment here. With potential annual savings of only $58, a system costing ~$1,500 has a payback period of nearly 26 years. If you want purified water on demand, an under-sink reverse osmosis system is a far better value, eliminating the need for bottled water which can cost a family $600-$900 per year.