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Serving Lehigh County

Water Testing & Filtration in Allentown, PA

Allentown’s water system is operated by the Lehigh County Authority, drawing largely from the Little Lehigh Creek — water that has spent its life moving through limestone. That means the state’s signature hard water arrives chlorinated at some of the state’s oldest housing stock. Every piece of that is measurable, and the test is free.

Local water profile

What Allentown water is like

Mostly municipal waterSupplier: Lehigh County Authority

City water in Allentown is treated and chlorinated by the Lehigh County Authority. Because the sources sit in limestone country, hardness is a fact of life — scale on fixtures and dying water heaters are the complaints we hear most across the city and the West End. The second local story is age: Center City, the 1st and 6th Wards, and much of the East Side were built decades before the 1986 lead-solder ban, so older homes carry a lead question only a test can answer.

Sound familiar?

What homeowners in Allentown notice

  • Crusty white scale on faucets and showerheads within months of cleaning
  • Chlorine taste, especially in summer
  • Dishwasher spots and stiff laundry
  • Water heaters that rumble or fail early — the classic hard-water tax

The local issues, honestly

Water issues worth knowing about in Allentown

Not everything on this list is dangerous — most of it is a cost or comfort problem, and we label each one honestly. A free test tells you which apply to your home.

Hard water & scale

Nuisance & cost — not a health risk

Hard water carries dissolved rock — mostly calcium and magnesium picked up from limestone. The more rock it carries, the more it leaves behind on your dishes, pipes, and skin.

Hard water is safe to drink. It is a cost and comfort problem, not a health problem — it shortens appliance life and wastes soap and energy, but it will not hurt you.

Hard water & scale, explained

Chlorine taste & disinfection byproducts

Depends on your home — test to know

Utilities add chlorine to kill germs on the way to your house — a good thing. But chlorine reacts with natural organic matter to form small amounts of byproducts (THMs and HAAs), and it makes water taste and smell like a pool.

Chlorination is one of the great public-health wins — the taste is the trade-off, not a danger. Byproducts are regulated by EPA because long-term exposure at high levels matters; utilities must stay under those limits. Carbon filtration removes both once the water is safely at your door.

Chlorine taste & smell

Lead from older plumbing

Health-relevant — test to know

Lead almost never comes from the source water. It comes from the pipes it travels through — old lead service lines, lead solder used before the 1986 ban, and older brass fixtures.

Lead is a genuine health issue, especially for children — EPA and CDC agree there is no known safe level in a child’s blood. That is a reason to test, not to panic: many older homes test fine, and the fix is well understood.

Lead from service lines

Aging water mains & sediment

Nuisance & cost — not a health risk

Much of NEPA’s water travels through mains laid generations ago. Old pipes shed rust and sediment, break more often, and trigger boil-water advisories when pressure drops.

The water leaves the plant clean — the distribution system is where grit and rust pick up. Sediment is mostly a nuisance and a wear-and-tear problem for fixtures and appliances; advisories are the utility being appropriately cautious.

Sediment after main breaks

If your home is older

Allentown has one of the largest stocks of pre-1940 row homes in the region. Homes that old can have lead service lines, not just lead solder. You cannot see or taste lead — if your block predates World War II, test once and know.

Lead in drinking water — what parents should know

Free · no obligation · ~30 minutes

How the free water test works in Allentown

The test is about information, not a sales visit. You find out what is actually in your water, in numbers you can keep — whatever you decide to do next.

  1. 1.Pick a time

    Call or send the form. We schedule around you — evenings and Saturdays included.

  2. 2.We test at your tap

    Hardness, pH, iron, chlorine, and total dissolved solids, measured on the spot in about 30 minutes.

  3. 3.Plain-English results

    Every number explained while you watch. What matters, what doesn’t, and why.

  4. 4.Honest next step

    If something is worth fixing, you get options and a firm quote. If your water is fine, we tell you and leave.

Good to know

Allentown water questions, answered

How hard is Allentown water?
Hard enough to notice. The Lehigh Valley sits on limestone, and water that moves through limestone carries dissolved rock — measured in grains per gallon. Most homes here test well into "hard" territory. We measure your exact number at the tap, free, and tell you honestly whether a softener pays for itself.
Who supplies Allentown’s water?
The Lehigh County Authority has operated the City of Allentown’s water and sewer system since 2013. They publish an annual water quality report (a CCR) you can read online — we can walk you through yours during a free test and explain what each number means in plain English.
Should I worry about lead in an older Allentown home?
Worry, no — test, yes. Lead solder was legal until 1986 and Allentown’s older wards long predate that. There is no way to see, taste, or smell lead; a simple test is the only answer. If it shows up, a reverse osmosis system at the kitchen tap is a proven fix.
Will a water softener fix the chlorine taste too?
No — softeners remove dissolved rock, not chlorine. They solve scale, spots, and dry skin. Chlorine taste needs carbon filtration. Many Allentown homes pair the two: a softener for the hardness and a carbon filter for the taste. Your test results show whether you need one, both, or neither.

What we install in Allentown

Keep learning

Neighborhoods & nearby communities

Center CityWest EndEast SideSouth AllentownHamilton DistrictTrexler ParkCedar Crest

Also serving Emmaus, Whitehall, Catasauqua, Coopersburg, Center Valley, Macungie and the rest of the Lehigh Valley service area.

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We cover Lehigh County, Northampton County and the rest of Northeast Pennsylvania. One call confirms coverage for your address.

(610) 510-6101