How do I know if I need a home water treatment system or just a softener?

If your goal is only to remove hardness minerals, a softener may suffice. If you’re concerned about taste, odor or other contaminants, a full water treatment system may be the right solution.

Are softened water and drinking water safe?

Yes. Softened water remains safe to drink. If sodium levels are a concern, consider pairing with an RO filter for your drinking water tap.

What typically contributes to water softener cost?

Size of home, water usage, local water hardness, equipment selected, and system complexity all influence cost. We provide an upfront estimate so you know what to expect.

Greater San Antonio's Trusted Plumbing Experts

Water Systems in Castroville & San Antonio

At Five Star Plumbing, we understand the importance of reliable water systems for your home or business. From delivering safe drinking water to maintaining efficient water softener units and improving water quality, our solutions are designed with Texas families and businesses in mind. Serving Castroville, San Antonio, and surrounding communities, our team brings years of local expertise to every system we install, repair, or maintain.

Call Now (210) 673-0797

(210) 673-0797

Service Hours: 24/7

Your Trusted Partner in Home Water Treatment Systems

Your water system should do more than just move water from point A to point B. We provide home water treatment systems that enhance comfort, protect your plumbing, and ensure that the drinking water you rely on every day is clean, fresh, and safe. Whether you’re struggling with hard water, mineral deposits, or waterborne contaminants, we’ll help you find the right solution.

Our licensed team works with the latest equipment and technologies—from RO filters and water softeners to customized filtration systems tailored to your business or household needs.

Five Star Plumbing Water Systems in Castroville & San Antonio service photo

Our Water System Services

Five Star Plumbing provides complete water system solutions for homes across Castroville and Greater San Antonio—from water heaters and tankless units to softeners and filtration.

Water Heater Repair

Fast diagnosis and repair to restore consistent hot water for your home.

Water Heater Installation

Professional installation of new tank water heaters sized for your household.

Tankless Water Heater Installation

On-demand hot water with energy-efficient tankless system installation.

Tankless Water Heater Repair

Expert repairs to get your tankless system heating reliably again.

Water Softener Installation

Protect pipes and fixtures from hard water with a properly installed softener.

Water Softener Repair

Restore softener performance when salt bridges, valves, or resin beds fail.

Water Filtration Systems

Whole-home and point-of-use filtration for cleaner, better-tasting water.

Comprehensive Water System Services

We don’t believe in one-size-fits-all. Our services include:

No matter the project size, we’re committed to providing excellent service and durable solutions that last.

Drinking Water You Can Trust

Poor water quality can affect everything from your skin to your coffee. That’s why we prioritize drinking water safety with filtration systems that target contaminants, odors, and bad taste.

Understanding Hard Water in San Antonio & Castroville

If you’ve lived in San Antonio, Castroville, or Medina County for long, you’ve likely dealt with hard water. It’s a regional issue caused by excessive calcium and magnesium in the water supply. Signs include:

Why Soft Water Is a Smart Investment

Installing or repairing a water softener does more than provide silky showers and spotless glassware—it reduces mineral buildup, protects your water heater, and improves water flow across your system.

Why Choose Five Star Plumbing?

We’re not a faceless chain—we’re your neighbors. Based in Castroville and deeply rooted in the South Texas community, we’ve built our reputation on trust, transparency, and decades of hands-on experience with regional water systems.

When you choose Five Star Plumbing, you’re working with a team that is:

📞 Have a question or ready for an estimate? Call us today—your comfort, safety, and water quality are our top priorities.

Our local knowledge helps us design water systems that meet city codes and withstand Texas’ climate.

Trained Technicians – Our crew is skilled in installing and maintaining all major brands of water softeners, filtration systems, and water heaters.
Fast, Honest, and Local – We respond quickly, communicate clearly, and always provide transparent, upfront pricing.
Eco-Conscious Solutions – Our installations help reduce water waste and extend the life of appliances, aligning with sustainable home practices. This supports a lower environmental impact across every process we manage.
Service You Can Count On – From your first call to final walkthrough, we treat your home as if it were our own—with care, respect, and precision.
Bexar & Medina Counties – Hondo, LaCoste, Rio Medina, Helotes