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Drinking Water Systems

Pure, Safe Water for Your Family

Pure Water. Straight From Your Tap.

Most water in southeastern Pennsylvania meets the legal safety standard. That standard is not the same as clean. Chlorine, PFAS (forever chemicals), lead, arsenic, and nitrates can all pass through a public treatment plant or a private well and land in your glass — within legal limits.

At Dierolf Plumbing and Water Treatment, we start with a water test, not a sales pitch. We find out what is actually in your water, then recommend the system that matches it.

Why Southeastern PA Homeowners Choose a Drinking Water System

  • Removes real contaminants: Lead, PFAS, arsenic, chlorine, nitrates — not just taste issues.
  • Better tasting water, always: No chlorine aftertaste, no metallic notes, no odor.
  • Eliminates bottled water costs: Most families recover the installation cost within 1 to 2 years.
  • Purified water on demand: From your existing kitchen faucet or a dedicated tap — no bottles, no hauling.
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We Test First. Then We Recommend.

Most water treatment companies walk in ready to sell you whatever system they carry. We’ve seen the results of that — homeowners who paid for reverse osmosis when ultrafiltration was a better fit, and homeowners who bought the wrong system entirely because no one tested their water first.

Our experienced service technicians test your water before making any recommendation. We look at what’s actually in it, size the system for your household, and explain the difference between options in plain language. If your water doesn’t need a system, we’ll tell you that too.

How We Help You Choose the Right System

  • Three Systems. One Right Answer for Your Water.
    We offer three drinking water solutions for southeastern Pennsylvania homes. Your water test tells us which one makes sense for you — and we’ll explain the difference in plain language, not technical jargon

  • icon checkmark Reverse Osmosis

    Removes PFAS, lead, arsenic, heavy metals, and nitrates. Best when chemical contamination is the concern.

  • icon checkmark Ultrafiltration

    Removes bacteria, viruses, and sediment while keeping beneficial minerals. Best for microbial concerns on well water.

  • icon checkmark Ultrapure Alkaline

    RO purification plus remineralization. Deep purification with minerals restored and pH raised.

Not sure what’s in your water?

Find Out

Our Drinking Water Systems Protect and Purify

We offer three distinct drinking water solutions for homes across Bucks, Montgomery, Chester, Delaware, Berks, and Lehigh counties. Your water test tells us which one fits your situation.

  • Reverse Osmosis

    most common
    Removes up to 99% of contaminants — PFAS, lead, arsenic, nitrates, heavy metals, chlorine, bacteria, and viruses. The right choice when chemical contamination is present.

    Learn more about RO systems

  • Ultrafiltration

    Removes bacteria, viruses, cysts, and sediment while keeping beneficial minerals like calcium and magnesium. Best for microbial concerns, especially on private well water.

    Learn more about ultrafiltration

  • Ultrapure Alkaline

    RO-level purification with a remineralization stage that restores calcium and magnesium and raises the pH. Deep purification without sacrificing minerals.

    Learn more about alkaline systems

Our Drinking Water System Installation Process

We Make It Easy — From Water Test to Working System

Water Quality Assessment

We start with a real water test — not a guess based on your zip code. We identify exactly what contaminants are present and at what levels before recommending anything.

Customized System Recommendation

Based on your test results, we recommend the right system — reverse osmosis, ultrafiltration, or ultrapure alkaline — sized for your household. We explain the difference in plain language, not sales language.

Professional Installation

Our experienced service technicians install your system cleanly and correctly, integrating it with your existing plumbing. Most installations are completed in a single visit.

Testing and Walkthrough

After installation, we confirm the system is performing correctly and walk you through how to use it, what to watch for, and when to expect your first filter service. You leave knowing exactly how your system works.

We Make It Easy — From Water Test to Working System

Frequently Asked Questions

  • Maintenance varies by system. RO systems typically require filter replacements every 6-12 months, while UF systems require less frequent maintenance. We’ll provide a customized plan based on your system.

  • No, we recommend choosing one system based on your water quality needs. Our team will guide you in selecting the best option for your home.

  • Our team will test your water and discuss your preferences to recommend the best solution—either reverse osmosis or ultrafiltration.

The Dierolf Difference

Hundreds of 5-Star Reviews
Southeastern Pennsylvania homeowners trust us because we test first, recommend honestly, and stand behind every installation.

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We do it ALL!

Dierolf Plumbing and Water Treatment is all about water. We specialize in wholesale water testing and water treatment systems for residential purposes. We also offer a full range of plumbing services. From the basic residential plumbing services such as fixing leaks to installing septic systems, we can take care of you every step of the way.

Financing Options are now available

Dierolf provides financing options to our customers through partners. Click the link to see available options and apply for financing today!

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