Most Columbus-area homeowners have no idea what's actually in their water. They notice the white spots on their dishes, the dry skin after a shower, the scale building up on their faucets — but they don't know why it's happening or what to do about it.

That's exactly why we built the Water Intelligence Center: a free ZIP code lookup tool that gives Central Ohio homeowners a clear, plain-language picture of their local water quality in about 10 seconds.

Enter your ZIP code and you'll instantly see:

• Water hardness — measured in grains per gallon (gpg), with a visual meter so you can see exactly how hard your water is compared to the scale
• Detected issues — chloramines, PFAS risk, iron, nitrates, bacteria risk, and more, each rated by severity (high, moderate, or low)
• Water source — whether your area is served by city water, a private well, or a mix of both
• Your provider — the utility or water district supplying your home
• A plain-language treatment recommendation — what type of system actually addresses your specific combination of issues

No jargon. No sales pitch. Just the facts about your water.

Columbus city water consistently tests at 15–18 grains per gallon — that puts it firmly in the "very hard" category and makes it one of the harder municipal supplies in Ohio.

For context: water above 10.5 gpg is considered very hard. At 15–18 gpg, you're dealing with:

• Scale buildup on water heaters, dishwashers, and washing machines — shortening their lifespan by years
• Soap scum and film on shower doors, tubs, and tile that won't scrub off
• Dry, itchy skin and dull hair because hard water strips moisture and leaves mineral residue
• Spotty dishes and glassware that look dirty even straight out of the dishwasher
• Higher energy bills because scale-coated water heater elements work harder to heat water

And that's before we get to chloramines — the disinfectant Columbus uses instead of chlorine — which can cause its own set of issues for skin, hair, and taste.

If you're outside the Columbus city limits in Delaware, Licking, Fairfield, or the surrounding counties, there's a good chance you're on a private well. Well water in Central Ohio comes with its own set of concerns that city water doesn't have:

• Iron — the most common well water issue in Ohio, responsible for orange staining on sinks, tubs, and laundry
• Bacteria risk — coliform and E. coli can enter wells through surface runoff, especially after heavy rain
• Nitrates — a concern in agricultural areas, particularly for households with infants
• Hardness — well water in Central Ohio is often even harder than city water, sometimes exceeding 20 gpg

The Water Intelligence Center covers both city and well water ZIPs, so you'll see the right information for your specific situation.

The Water Intelligence Center draws on a combination of sources: Columbus Division of Water annual water quality reports, EPA water quality databases, county health department data, and our own 20+ years of in-home water testing across Central Ohio.

We've tested water in thousands of homes across Franklin, Delaware, Licking, Fairfield, Union, Pickaway, and surrounding counties. That field experience — knowing which subdivisions have unusually high iron, which well areas have bacteria concerns, which city ZIPs see the worst chloramine taste — is baked into the tool.

The result is data that's more useful than a generic "Ohio water quality" article, and more accessible than wading through a 40-page municipal water report.

The ZIP lookup gives you a starting point. Here's what to do with that information:

If your hardness is above 10 gpg: A water softener is almost certainly worth it. At Columbus levels (15–18 gpg), the math on appliance lifespan, soap savings, and energy efficiency typically pays for a softener in 3–5 years.

If you have chloramine concerns: A whole-house carbon filter or a reverse osmosis system at the tap will address taste and odor. Standard pitcher filters and refrigerator filters are not effective against chloramines.

If you're on well water with iron: An iron filter (air injection or oxidizing media) is the right solution — a water softener alone won't handle iron above about 1 ppm.

If PFAS is flagged: A certified reverse osmosis system is the most effective treatment available for PFAS removal at the tap.

If you're not sure: That's exactly what our free in-home water test is for. We'll test your actual tap water — not just your ZIP code — and give you a precise reading of hardness, iron, TDS, pH, and chloramines on the spot.

The current version of the Water Intelligence Center covers more than 30 ZIP codes across:

• Franklin County — Columbus core, Upper Arlington, Worthington, Gahanna, Groveport, Canal Winchester, Grove City, Hilliard, Reynoldsburg, Westerville
• Delaware County — Delaware, Lewis Center, Powell, Galena, Sunbury, Powell
• Licking County — Newark, Pataskala, Johnstown, Granville, Blacklick
• Fairfield County — Lancaster, Pickerington
• Union County — Marysville, Plain City
• Madison County — London
• Pickaway County — Circleville

We're adding more ZIPs regularly. If your ZIP isn't covered yet, the tool will let you know and connect you directly with our team for a free water test.

The Water Intelligence Center is free, takes about 10 seconds, and requires no sign-up. Just enter your ZIP code and see what you're working with.

If what you find raises questions — or if you want a precise, lab-accurate reading of your specific tap water — our free in-home water test is the next step. We serve the entire Columbus metro area, and there's no obligation.