Water Treatment and Plumbing Services in Lower Macungie Township, PA
Lower Macungie Township is the second most populous municipality in Lehigh County, a fast-growing 22.5-square-mile community that stretches across southern Lehigh County between Allentown and the South Mountain range. With a population of over 32,000 and ZIP code 18062 covering its residential neighborhoods, corporate campuses, and preserved open space, Lower Macungie has earned a reputation as one of the Lehigh Valley’s most desirable communities — shaped by strong schools in the East Penn School District, Lehigh Valley Hospital access along Cedar Crest Boulevard, and the Pennsylvania German heritage visible in the historic borough of Macungie at its center. The township surrounds Macungie Borough on three sides and is home to major employers including Mack Trucks, Smooth-On, and the Allen Organ Company. For outdoor recreation, residents head to the Wildlands Conservancy trails along Little Lehigh Creek, Quarry Park on Quarry Road, and the historic Haines Mill — a 1760 grist mill on the National Register of Historic Places. What many homeowners discover after moving here is that the township’s water picture is more varied than it looks. Dierolf Plumbing and Water Treatment has served Lehigh County families since 2009, always starting with a free professional water test before recommending any solution.
Most of Lower Macungie Township is served by the Lehigh County Authority’s Central Lehigh Division, which draws from 14 groundwater wells throughout the service area and serves approximately 18,171 properties across Lower Macungie, Upper Macungie, Salisbury, South Whitehall, Weisenberg, and Lowhill townships. LCA’s own Consumer Confidence Reports document hardness in the Central Lehigh Division at 12 to 18 grains per gallon — firmly in the very hard category. At those levels, calcium and magnesium minerals accumulate inside water heaters and every water-using appliance in the home, shortening their lifespan and reducing efficiency. The scale deposits that homeowners see on showerheads and glassware are just the visible portion of what is happening inside pipes and appliances every day. A properly sized water softener is the most effective long-term solution, and it starts with confirming your exact hardness number from a test. EWG analysis of the LCA Central Lehigh system also identifies disinfection byproducts — including bromodichloromethane, chloroform, and chromium (hexavalent) — above EWG health guidelines, all within federal legal standards. A reverse osmosis system at the drinking water tap addresses these byproducts where it matters most: the water your family actually drinks and cooks with.
Areas of Lower Macungie Township near the Emmaus border are served by LCA’s Emmaus Consecutive Division, which purchases groundwater from the Borough of Emmaus wells. LCA has specifically flagged a PFAS (PFOS/PFOA) issue for this division and published guidance encouraging customers to consider certified PFAS-reducing filters for their drinking water. For homeowners in this part of the township, a reverse osmosis system is not just a nice-to-have — it directly addresses a documented emerging contaminant concern in their specific water supply. Our team can confirm which LCA division serves your address and what the current water quality data shows for your area. Understanding the difference matters, and our free water test is how we find out exactly what is at your tap before recommending anything.
While Lower Macungie Township is predominantly a municipal water community, private wells remain in use on some properties — particularly in the more rural sections along Mountain Road, Sauerkraut Lane, and the township’s southern tier near South Mountain. Well owners in these areas contend with the same carbonate limestone geology that makes municipal groundwater hard throughout the Lehigh Valley, plus the added risks of iron and manganese staining, pH imbalance, and bacterial contamination from surface runoff. Pennsylvania DEP recommends annual testing for bacteria and nitrates at minimum. Our iron filtration systems address staining and metallic taste throughout the home, while a UV disinfection system provides chemical-free bacterial protection. Our well systems services cover pump, pressure tank, and full water quality testing. Neighboring communities including Upper Macungie, Salisbury Township, and Emmaus share similar water profiles, and Dierolf’s deep Lehigh County expertise translates directly to every Lower Macungie home we serve.
Local Water Snapshot: Lower Macungie Township, PA
- Water Source: Lehigh County Authority Central Lehigh Division (14 groundwater wells, ~18,171 properties); LCA Emmaus Consecutive Division near Emmaus border (Emmaus Borough groundwater); private wells in rural areas
- Hardness Levels: 12-18 GPG (very hard; LCA Central Lehigh Division confirmed)
- Contaminants of Concern: TTHMs (bromodichloromethane, chloroform), chromium (hexavalent) exceed EWG health guidelines; PFAS (PFOS/PFOA) flagged in LCA Emmaus Consecutive Division; PFAS screening recommended for private wells
- Disinfection: Chlorine (LCA groundwater wells); homeowner responsibility for private wells
Solving Hard Water and PFAS Concerns in Lower Macungie Township
Lower Macungie Township is one of the Lehigh Valley’s fastest-growing communities, and water quality here reflects that complexity. Most homes are on LCA’s Central Lehigh groundwater system — very hard water, documented disinfection byproducts, and for some properties near Emmaus, a flagged PFAS concern in the LCA Emmaus Consecutive Division. A minority of properties are on private wells that may never have been comprehensively tested. Before Dierolf recommends anything, we find out exactly what a homeowner is working with. Our free water test gives you precise numbers at your specific tap — hardness, iron, pH, chlorine byproduct levels — rather than a county-wide average. If the water is fine, we say so and leave without selling you anything. That is how we have operated since 2009, and it is why we have earned over 1,000 five-star reviews across Lehigh County.
For Lower Macungie Township homeowners ready to act, the solutions are built for what this community’s water actually delivers. A whole-house water softener addresses the 12 to 18 GPG hardness that is silently degrading your water heater, dishwasher, and appliances year after year. A reverse osmosis system under the kitchen sink removes TTHMs, PFAS, chromium, and other dissolved contaminants at the tap where your family drinks and cooks — providing a layer of protection beyond what municipal treatment delivers. For homeowners on LCA’s Emmaus Consecutive Division with the documented PFAS concern, an RO system is the most practical and effective response available today. And for the township’s private well owners, our iron filtration systems and UV disinfection systems address what well water in this limestone geology typically delivers. Our licensed technicians handle every installation neatly, leaving your basement or utility room tidy and your system clearly labeled for easy maintenance.
What Our Customers Say
“Jon and Noah were a pleasure to work with. They were very knowledgeable on the services we needed and completed everything very efficiently. We are very happy with our experience with Dierolf and will use them for any future services we need done.”
— Amanda M.
“David G did a great job. Kind, courteous, and professional. The work was clean and guidance on the unit was given. Highly recommended David for any work.”
— Buck E.
“Ethan was excellent. Efficient and explained all of my questions in detail. Like each of the technicians I have had in past service calls, Ethan was kind and patient. Highly recommend using Dierolf!”
— Gary P.
Frequently Asked Questions in Lower Macungie Township
My Lower Macungie Township water leaves heavy scale on everything. Is 12-18 GPG normal here?
Unfortunately, yes. The Lehigh County Authority’s Central Lehigh Division, which serves the majority of Lower Macungie Township, officially documents hardness in the range of 12 to 18 grains per gallon — well into the very hard category. That range reflects the carbonate limestone geology underlying the entire central Lehigh Valley, which dissolves calcium and magnesium into groundwater as it moves through the aquifer. At those hardness levels, scale accumulates aggressively inside your water heater and appliances, reducing their efficiency and cutting their lifespan significantly. Our article on 7 ways a water softener protects your water heater details exactly what that costs homeowners over time. A whole-house water softener removes the hardness minerals before they reach any appliance or fixture. Our free water test confirms your exact number so the system can be sized correctly for your household.
I heard LCA flagged a PFAS issue for some Lower Macungie Township homes. Should I be concerned?
This is a legitimate and specific concern for homeowners on the LCA Emmaus Consecutive Division — the service area that purchases water from the Borough of Emmaus wells and serves properties in Lower Macungie, Upper Milford, and Salisbury townships near the Emmaus border. LCA has publicly disclosed a PFOS/PFOA concern for this division and recommends that customers consider using a certified filter for drinking water. PFAS are per- and polyfluoroalkyl substances — the “forever chemicals” that do not break down in the body or the environment — and the EPA finalized new maximum contaminant levels for PFAS in 2024. The most practical and effective solution is a reverse osmosis system installed under the kitchen sink. Reverse osmosis removes PFAS along with TTHMs, chlorine, and other dissolved contaminants from the water your family drinks and cooks with every day. If you are not sure which LCA division serves your address, our team can help you check — and our free water test gives you a complete picture of what is actually at your tap. For more on PFAS and how they get into drinking water, read our article on how forever chemicals get into your drinking water.
Can I get a water softener and reverse osmosis system installed together in my Lower Macungie Township home?
Yes, and for most Lower Macungie Township homeowners on LCA water this combination is the most comprehensive approach available. The water softener handles the whole-house hard water problem — protecting all your plumbing, fixtures, and appliances from the 12 to 18 GPG mineral scale that defines Central Lehigh groundwater. The reverse osmosis system installed under the kitchen sink provides an additional layer of purification at the tap, removing disinfection byproducts, PFAS, chromium, and dissolved contaminants that the softener is not designed to target. The two systems complement each other rather than overlap — the softener protects the home, the RO protects the drinking water. Our technicians plan the installation together so everything is placed logically, plumbed neatly, and clearly labeled. For more on choosing the right RO system, read our article on how to choose the perfect reverse osmosis system for your home. Start with a free water test so we know exactly what your water contains before recommending the right configuration.
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Bryan was very professional, courteous, and efficient. Great service, thank you!
Great job installing our new water filtration system! Installers were very communicative and efficient. Well done.
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!!
Service was great and very efficient. The guys were very friendly and quickly replaced the pump without any issues. Thank you.
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
