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What's Actually in Your Water

Dierolf Plumbing & Water Treatment · Southeastern Pennsylvania

Most homeowners have never had their water tested. We’ll come to you, run a free in-home water analysis, and show you exactly what you’re working with — no pressure, no obligation.

before and after of effects of hard water on a kitchen faucet

Your Water Looks Fine. That’s Not the Same as Safe.

Tap water can look and taste perfectly normal and still contain things you’d rather not know about — after the fact. Chlorine used to treat city water. Hardness minerals that wear down your appliances. PFAS compounds showing up across Montgomery, Chester, and Bucks counties. And if you’re on a well, there’s a whole separate list.

The only way to actually know what’s in your water is to test it. That’s what we do — right in your home, in real time, so you can see the results yourself.

What our free in-home water analysis covers: We test for chlorine and chloramine levels, water hardness, pH, total dissolved solids (TDS), and common contaminants relevant to your water source — city or well. If you want to go deeper, we offer expanded testing options too, including PFAS screening and bacteria testing.

  • 💧 Chlorine & Chloramines

    Common in city water — affects taste, smell, and gut health.

  • 🪨 Water Hardness

    Scale buildup on fixtures, appliance wear, dry skin and hair.

  • ☣️ PFAS Screening

    “Forever chemicals” found in water systems across the region.

  • 🦠 Bacteria & Iron

    Critical for well water households — often invisible to the eye.

  • ⚗️ pH & TDS

    Overall water balance and total dissolved solids — your baseline.

  • 🔬 Additional Testing Available

    Arsenic, heavy metals, and more — just ask when you book.

How the Free Water Test Works

  1. Book your visit — Fill out the form below or call/text (484) 300-2800. We’ll find a time that works for your schedule.
  2. We test your water on-site — One of our experienced service technicians runs the analysis right in your home. You watch the results come in, live.
  3. We walk you through what we found — No jargon, no hard sell. Just a plain-language explanation of what’s in your water and what your options are. You decide what, if anything, you want to do next.

Ready to See What’s in Your Water?

The test is free. The results are yours to keep. There’s no obligation to do anything after.

Why Homeowners in SE Pennsylvania Call Dierolf

We’re not a national chain or a call center. Dierolf Plumbing and Water Treatment has been serving homeowners across Bucks, Montgomery, Chester, Delaware, and Berks counties for over 25 years. The same experienced service technicians who show up at your door are the ones who know your area’s water, your type of home, and what actually works here.

  • Our Promise

    100% Satisfaction Guarantee

    If you’re not happy with the work, we make it right. That’s not a marketing line — it’s how we’ve stayed in business for over two decades.

  • No-Hassle Sales Experience

    We’ll tell you what we find, explain your options, and let you decide. No pressure tactics, no bait-and-switch. You’re in control of the conversation.

  • Plumbing + Water Treatment Under One Roof

    From water softeners and filtration systems to full plumbing service, we handle the whole picture. One company, one call, one team that knows your home.

What Your Neighbors Are Saying


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💧 Your free water test takes less than an hour — and you’ll know exactly what’s coming out of your tap.

Schedule Your Free In-Home Water Analysis

Fill out the short form below and we’ll reach out to schedule a time that works for you. No obligation, no pressure — just answers.

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