Medina County runs on four different water supplies

There’s no such thing as Medina County water

Ask what the water is like in Medina County and the honest answer is another question: which Medina County?

The city of Medina has purchased its water from the Avon Lake treatment plant since July 2002. That’s Lake Erie water, piped in from another county.

Wadsworth runs its own plant and softens with lime.

The county’s Southern district pumps groundwater from wells — three at the Chippewa Lake plant, two more at Westfield.

And more of Medina County than of any other county we serve isn’t on a public system at all.

Those are four different waters. A neighbour’s opinion about “the water around here” is worth very little when the person two roads over is drinking something that arrived from a different lake.

Wadsworth softens, and it’s still very hard

This is the fact we would put in front of anyone in Wadsworth.

The city softens centrally, with quicklime, and its plant also aerates for iron and manganese oxidation. So the treatment is real and it’s working. Wadsworth’s own engineering consultant measured what comes out the other side: the finished water still averaged 224 mg/L as calcium carbonate.

The USGS calls anything over 180 mg/L very hard. Wadsworth’s finished, softened, treated water clears that line comfortably. In grains that’s about 13, using the standard conversion — our arithmetic, not the city’s figure.

The same report estimated that full lime softening could get finished water to about 145 mg/L, and recommended a target band above that. So the gap is known, documented, and a matter of plant economics rather than neglect.

What it means at your house is simple: if you live in Wadsworth and someone told you a softener is unnecessary because the city softens the water, that person didn’t read the city’s own engineering report.

The oil well inside the isolation radius

We’re including this because it’s unusual, because it’s in the county’s own public report, and because the county handled it correctly.

Medina County reported a significant deficiency violation in 2025. An ODNR-permitted oil well had been installed within the mandated 300 feet sanitary isolation radius of the Westfield wellhead. The county’s response was to permanently discontinue use of that well and supply those customers from elsewhere for most of the year instead.

Nobody was exposed to anything. The county found a problem in its own setback and took the well out of service rather than argue about it. We’re telling you because a homeowner in the southern district may have noticed their water tasting different for much of 2025 and never learned why — it changed source.

Why Medina wells are their own problem

More of this county is on a private well than any other county we serve. The USGS county water-use dataset puts Medina at 43% self-supplied. Portage is at 26.4% and Lake at 5.1%.

The geology explains why those wells behave the way they do, and it isn’t flattering. More Medina wells are logged in shale than in any other material, and Ohio DNR is blunt about what that means: west and north of the city of Medina the Cuyahoga formation is predominantly shale and “is a relatively poor water source.” Shale wells are low producers.

The county also splits geologically down the middle. Sharon and Wadsworth townships are dominated by sandstone logs. Litchfield, Chatham, York and Westfield are dominated by shale. Those are different wells producing different water in the same county.

ODNR also names four townships — Litchfield, Chatham, Spencer and Homer — where brine and natural gas from historic oil recovery have contaminated the primary aquifer. That’s documented, it’s specific, and it’s the sort of thing worth knowing before you buy a house with a well in one of them.

And Ohio EPA notes it has little water-quality data from shale-dominated wells at all, so they’re excluded from its aquifer chemistry report. Meaning: for a large share of Medina’s private wells, the state doesn’t have a chemistry profile to give you.

Nobody is testing your chemistry

Here’s the part that matters most, and it comes straight from the county.

Medina County Health Department’s private water sample covers bacteria. In its own words, the water “will be tested for bacteria only and not for chemical quality/content.”

That’s a completely reasonable scope for a public health department — bacteria is the acute risk. But it means that if you’re one of the many Medina households on a well, the official test you may have had done told you nothing about hardness, iron, manganese, sulfur or anything else that determines what equipment your house actually needs.

What we would actually do here

Find out which of the four waters you’re on first. It changes every subsequent answer, and half the bad advice in this county comes from skipping that step.

On Wadsworth city water, test for hardness and expect a real number despite the central softening. On a private well, test the chemistry the health department doesn’t cover. In the southern district, know that your source can change underneath you.