Emmaus is a tight-knit borough in the Lehigh Valley, surrounded by the open land of Lower Macungie Township and Upper Milford Township. Homes on the borough’s edges — and throughout the surrounding townships — often rely on private wells, and those wells have been through a full spring by the time May arrives. Snowmelt from South Mountain. Heavy rain across the valley. Active agricultural land to the south and west. All of that affects what’s in your water right now.
If your home is on a private well in Emmaus, Macungie, Wescosville, or the surrounding Lehigh County area, this is the month to test it.
Why May Is the Right Time for Emmaus Well Owners
Most well owners in the Emmaus and Macungie area don’t think about testing until something is visibly wrong — staining on the sink, an unfamiliar smell, or water that tastes off. By then, the problem has often been building for months.
The U.S. Environmental Protection Agency recommends testing private wells at least once per year. May is the ideal window because it follows the spring thaw and heavy rains that most affect groundwater. Testing after those events gives you an accurate picture of what your family is actually drinking.
What Spring Does to Lehigh Valley Groundwater
When snow melts across the South Mountain area and spring rains move through the Lehigh Valley, surface water runs across fields, roads, and wooded hillsides and percolates into the ground. It carries bacteria, nitrates, road salt, and sediment with it. The water table that feeds private wells in Lower Macungie Township and Upper Milford Township is directly in that path.
Frozen ground thaws unevenly, creating temporary pathways for surface water to reach depths it normally wouldn’t. That’s what makes spring the highest-risk season for well contamination — and why testing after the thaw is more informative than testing in August.
Contaminants Most Common in Emmaus Area Wells
Iron and Hardness
Lehigh County’s geology produces naturally hard water with elevated iron. Orange or rust-colored staining on fixtures, laundry, and sinks is a familiar complaint for Emmaus area homeowners. Spring runoff can spike iron levels above where they sit in late summer.
Nitrates from Farmland
Active farms in the townships surrounding Emmaus apply fertilizers and manure that carry nitrates into groundwater. The CDC flags elevated nitrates as a serious risk for infants and pregnant women.
Coliform Bacteria
A reliable indicator that surface water has reached your well. More likely in wet springs and in wells with older casings or compromised seals. No taste, no smell — only testing catches it.
PFAS
Man-made chemicals detected across Pennsylvania groundwater. No taste, no odor, no color. Relevant to wells near older industrial or commercial areas in the Lehigh Valley.
What a Professional Water Test Actually Covers
A home test kit gives you broad pass/fail readings for a small set of parameters. A professional water testing and analysis service measures total coliform and E. coli, nitrates and nitrites, pH and hardness, iron and manganese, turbidity, VOCs where relevant, and PFAS. You get actual concentrations — not just flags — compared against EPA and Pennsylvania DEP safe thresholds.
That’s what turns a test into an actual plan for your family’s water. You can also read about what to expect from an annual well water check-up before you schedule.
Not Sure What to Test For?
Dierolf will walk you through the right testing panel for your well location, the surrounding land use, and any existing treatment equipment you have. Start with a free consultation.
Treatment Options That Match Your Results
Bacteria detected — A UV filtration system neutralizes bacteria and viruses using ultraviolet light, without adding chemicals. The right answer for most private wells where bacteria shows up.
High iron — An iron filtration system removes dissolved and particulate iron before it reaches your fixtures. Protects your plumbing and eliminates staining on laundry and sinks.
Hard water — A water softener replaces calcium and magnesium with sodium through ion exchange. It extends the life of your water heater, dishwasher, and plumbing — often meaningfully.
PFAS or nitrates — A reverse osmosis system at the kitchen tap removes PFAS, nitrates, and heavy metals through a semi-permeable membrane. One of the most effective options for chemical contaminants in drinking water.
Sulfur smell — A sulfur filtration system addresses hydrogen sulfide at the source. Read more about what causes a rotten egg smell in your water to see if this fits your situation.
We regularly run promotions on water testing and treatment system installations. Check our current offers before you schedule.
See Current Water Treatment Specials
How Dierolf Serves the Emmaus and Lehigh Valley Area
Dierolf Plumbing and Water Treatment serves homeowners throughout the Lehigh Valley, including Emmaus, Macungie, Wescosville, Alburtis, and the surrounding Lower Macungie, Upper Milford, and Weisenberg Township communities. Our licensed master plumbers handle everything from the initial water test through installation of whatever treatment system your results call for.
With summer coming and water use increasing, there’s no better time to know what’s actually in your well. If something is off, treating it now costs far less than dealing with it after a season of use.
💧 Know what’s in your Emmaus well before summer — free, no obligation.
Get Your Free Well Water Analysis in Emmaus
Fill out the form below and a Dierolf water specialist will reach out to schedule your in-home consultation. We’ll test your water, review the results with you, and recommend only what your well actually needs.
Schedule Your Free In-Home Water Analysis
Serving Emmaus, Macungie, Alburtis, Wescosville, and throughout Lehigh County.
Frequently Asked Questions
How often should I test my private well near Emmaus?
The EPA recommends at least once a year. May is the ideal time because it follows spring thaw and heavy rains — the seasonal events that most affect groundwater quality in the Lehigh Valley. Schedule a free analysis here.
Are nitrates a real concern in Emmaus area wells?
Yes, particularly for homes near working farmland in Lower Macungie Township, Upper Milford Township, and Weisenberg Township. Fertilizers and manure applied in spring carry nitrates that can migrate into groundwater during saturated soil conditions. A professional test will tell you exactly what levels you’re dealing with.
My water has orange staining. Is that iron?
Almost certainly. Iron is one of the most common issues in Lehigh County private wells. Orange staining on fixtures, laundry, and the inside of toilet tanks is the most visible sign. An iron filtration system addresses it at the source. A professional test will confirm the level and help size the right system for your well.
Can I combine multiple treatment systems if I have more than one issue?
Yes. Many well owners in the Emmaus area deal with more than one contaminant — iron and bacteria, or hardness and nitrates. Treatment systems can be combined or staged to address multiple issues. A Dierolf specialist will review your test results and map out the most practical and cost-effective approach. Get started with a free consultation.
