Water Softeners & Filtration in Katy, TX

Softeners, carbon filtration and reverse osmosis for cleaner Katy water.

Expert water softeners & filtration for Katy & Houston Homes

Greater Houston has some of the hardest water in Texas. Hard water leaves scale on fixtures, dries out skin and hair, shortens the life of your water heater, and makes soap less effective. We install and service whole-home water softeners, carbon filtration systems, and under-sink reverse osmosis units. You'll feel the difference in the shower, see it on your glassware, and protect your plumbing investment for years.

Signs It's Time to Call Us

• White scale buildup on faucets, showerheads, and glass
• Dry, itchy skin or brittle hair after showering
• Soap and shampoo that won't lather properly
• Spots on dishes and glassware after washing
• Reduced water pressure from scale in pipes
• A shorter-than-expected water heater lifespan

What's Included

• Whole-home water softener installation and service
• Carbon filtration systems for taste and odor
• Under-sink reverse osmosis (RO) systems
• Water hardness testing and assessment
• Salt delivery and maintenance plans
• Free written estimates on all installations

Call Us

Talk to a real human who knows plumbing. We answer the phone.

We Diagnose

We find the real problem — not just the symptom — and explain it plainly.

Upfront Price

Flat-rate quote before we start. No hourly surprises, no pressure upsells.

Done Right

Quality work backed by our written workmanship warranty. Done once, done right.

"Obsta Plumbing came out the same day when our water heater stopped working. Paul diagnosed the problem quickly, gave us a fair upfront price, and had us back in hot water by that evening. Honest, professional, and genuinely nice people. This is the only plumber I'll call in Katy."

"We had a whole-home repipe done and the crew was incredible. They protected our floors, worked efficiently, and cleaned up every evening. Dorinda was so helpful coordinating everything. The new water pressure is amazing. Highly recommend this family-owned company."

"Called them about a toilet that wouldn't stop running. They came out the same day, fixed it in under an hour, and the price was exactly what they quoted. No upsells, no surprises. I've already recommended Obsta to three neighbors in Cinco Ranch."

"Our kitchen drain was backing up and we had no idea why. They ran a camera down the line and found tree roots — showed us the video and explained everything. Cleared the line and the price was fair. These are honest plumbers who actually explain what's going on."

"We've used Obsta Plumbing for years — they installed our water softener, replaced two water heaters, and handle all our routine maintenance. Always on time, always upfront pricing, always quality work. Paul and Dorinda run a great family business."

"Our restaurant had a major drain backup on a busy weekend. Obsta came out fast, cleared the line, and got us back up and running with minimal downtime. They understand commercial plumbing and they communicate clearly. We use them for all our maintenance now."