Since 2009, Dierolf Plumbing & Water Treatment has been a dedicated partner for homeowners in Trappe Borough. We know that Trappe is one of the most historically significant towns in Pennsylvania. Home to the oldest unchanged Lutheran church in the United States (Augustus Lutheran) and The Speaker’s House, this community takes preservation seriously. The company was founded by Mark Dierolf. He brings over 25 years of hands on industry experience to every job. Whether you live in a colonial era home on Main Street or a newer property near the Water Works Park, we understand the local infrastructure.

Trappe presents a unique challenge for water treatment because it sits on a geological divide. Many homes in the borough are supplied by public water that is safe but notoriously hard and chlorinated. However, just a few streets away, older properties and homes on larger lots often rely on private wells. These wells face a completely different set of problems, ranging from acidic water that eats copper pipes to bacterial concerns. We do not offer generic solutions. We treat every home as a unique ecosystem. We analyze your specific water chemistry to provide a fix that protects your family and your property.

Well Water: Acid and Bacteria

For our neighbors on private wells, the two biggest enemies are often invisible. First is acidity (low pH). Many wells in Trappe produce water that is slightly acidic. Over time, this corrodes copper piping, causing blue green stains in sinks and eventual pinhole leaks behind your walls. We install acid neutralizers to balance the pH and stop this damage. Second is bacteria. We recommend annual testing and often install ultraviolet (UV) disinfection systems to ensure your water is safe to drink without adding chemicals.

Hard Water in the Borough

If you are on public water, your primary battle is likely against hardness. The municipal water in Trappe is rich in calcium and magnesium. While not harmful to health, these minerals are brutal on your home. They cause scale buildup that ruins tankless water heaters, clogs showerheads, and leaves spotting on your dishes. We install high efficiency water softeners that remove these minerals, protecting your plumbing investment and giving you the luxurious feel of soft water.

Protecting Historic Plumbing

Given Trappe’s rich history, many homes here have plumbing systems that have been modified over decades—or even centuries. We specialize in working with older infrastructure. We know how to carefully update plumbing in historic stone basements without disturbing the integrity of the structure. Whether you need to replace an old well pump or upgrade a water heater in a tight space, our Licensed Master Plumbers have the expertise to get it done right.

We are proud to serve the Trappe community. We enjoy a meal at The Trappe Tavern (“The Trap”) or a visit to the Speaker’s House just as much as you do. You might see our trucks driving past the Augustus Lutheran Church on the way to a service call. We support the local landmarks that make this borough special. Our goal is to ensure your water quality is worry free so you can focus on enjoying life in this historic community. You can always check the EPA resources for more public data on local water quality.

The historic Trappe Tavern ('The Trap') on Main Street in Trappe PA

Comprehensive Water Quality & Plumbing Solutions for Trappe Residents

At Dierolf Plumbing & Water Treatment, we believe in radical honesty. We do not use scare tactics to sell you expensive systems. We start with accurate testing to see exactly what is in your water. Then we explain your options clearly. You get a transparent price and a professional installation backed by decades of local experience. We are here to help you solve problems, not create new ones.

Common Questions from Trappe Homeowners

Why do I have blue stains in my bathtub?

Blue or blue green stains are a sign of acidic water (low pH). This means your water is slowly dissolving the copper from your pipes. This is a common issue in Trappe wells. We install acid neutralizers to correct the pH and stop the corrosion immediately.

Is the public water in Trappe hard?

Yes. The public water supply typically tests as hard to very hard. This causes scale buildup in appliances and fixtures. A water softener is the best way to prevent this damage and extend the life of your plumbing system.

Do I need a UV light for my well?

We highly recommend it. A UV system provides 24/7 protection against bacteria and viruses without using chemicals like chlorine. It is an excellent “final firewall” for any private well system.

Recent 5 Star Feedback from Local Homeowners

⭐⭐⭐⭐⭐ “Superb job on a miserable cold day”

“Ethan did a superb job on a miserable cold day of snow and wintry mix. Great attitude, finished ahead of schedule in filling two large, pressurized acid neutralizers, and he left the basement in better condition than when he started. PS: Our dogs love him!”

Pat N (via Google Reviews)

⭐⭐⭐⭐⭐ “High-quality work”

“This is the second time that Justin has been to my home. His work is high-quality, and his knowledge of the business and his craft is amazing!”

John B (via Google Reviews)

⭐⭐⭐⭐⭐ “Amazing job fixing our UV system”

“Dierolf is an amazing company!!! Five stars all around – from timeliness, to communication, to cleanliness and beyond! Justin B. did an amazing job fixing our UV filtration system and a pipe that was leaking. Extremely pleased and will definitely be a repeat customer!!!”

Brittany W (via Google Reviews)

Ready to improve your home’s water quality? Contact us today to schedule a consultation or water test.

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Drinking Water Systems

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Iron Filtration Systems

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Neutralizers

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Residential Plumbing

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Reverse Osmosis

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Ultraviolet Filtration Systems

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Water Heaters

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Water Softeners

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Water Treatment

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Well Systems

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Well Tanks and Pumps

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Jason Burnham
Jason Burnham

Bryan was very professional, courteous, and efficient. Great service, thank you!

Cyndy Ryan
Cyndy Ryan

Great job installing our new water filtration system! Installers were very communicative and efficient. Well done.

Anne Marie Baxter
Anne Marie Baxter

Very very helpful and nice people! Wow i thought companies that care were gone not so!!! Dierolf’s people care and i think it’s a real reflection of the owner and how he runs his company and actually cares!! Thank you for a super great job and for caring!!

Steve Kocik
Steve Kocik

Service was great and very efficient. The guys were very friendly and quickly replaced the pump without any issues. Thank you.

John Brunke
John Brunke

They did a great job installing a new toilet in my bathroom. They were neat, clean, and paid attention to detail. Chris answered all of my plumbing questions without hesitation. Very satisfied... Highly recommend