Where Allentown's water actually comes from
Allentown’s water is operated by the Lehigh County Authority, drawn from sources that have spent their lives in limestone: the Little Lehigh Creek, Schantz Spring, and the Lehigh River. Treatment and testing meet every applicable standard — what treatment doesn’t remove is the dissolved calcium and magnesium the limestone put there, because hardness isn’t a safety parameter.
Hard or soft? The number that decides your upgrades
LCA’s own published figures put the Allentown Division at roughly 13 grains per gallon — past the 10.5 gpg mark where Penn State’s scale says “very hard” begins. Some LCA suburban well systems range 12–18 gpg. This is the real thing: crusted showerheads, spotted glasses, water heaters that die young, and soap that won’t rinse clean.
So, does Allentown need a water softener? Allentown is the rare city where the answer is usually yes — 13 gpg is exactly the water softeners were invented for. Pair it with carbon filtration and you fix the chlorine taste in the same treatment train while protecting the softener’s resin.
What the utility can't control: the last hundred feet
Center City, the 1st and 6th Wards, and much of the East Side were built decades before the 1986 lead-solder ban — some of the oldest housing stock in the state. The supply arrives compliant; pre-1986 plumbing is the wildcard, and one test at the kitchen tap answers it permanently.
This is the honest limit of every municipal water report: it describes the water leaving the plant, tested at points across the system. What your own pipes, solder joints, and service line add on the last stretch is invisible to the utility — and it's exactly what a free in-home test reads, at the tap your family actually drinks from.
Just outside Allentown: a different water world
The townships around Allentown mix LCA suburban supply (also hard) with private wells drilled into the same limestone — most test hard to very hard, though wells up on South Mountain can surprise you. The rock decides; the test reads it.
Ways to improve Allentown tap water at home
- Chlorine taste and shower smell — a whole-home carbon filter removes the disinfectant after it has done its protective job in the mains. On city water, this is the upgrade with the most day-one impact.
- Hardness — only if your measured number justifies it. A properly sized softener earns its keep on genuinely hard water and wastes money on soft water; the test decides, not the salesperson.
- Drinking water, perfected — a reverse osmosis tap at the kitchen sink polishes off dissolved solids, closes the lead question at that tap in older homes, and ends the bottled-water run.
- The lead question — pre-1986 home? One properly taken sample settles it for good. Our free test covers the panel that matters, explained in plain English with zero pressure.