Water Hardness Atlas ZIP / postcode

Well water hardness in Chase County, Nebraska

8.2 gpg hard

Private wells in Chase County typically give hard water: the median well sampled by the U.S. Geological Survey has 8.2 gpg (140 mg/L as CaCO₃).

<6060–120120–180>180 mg/L

Wells differ a lot, even next door: one in ten sampled wells had less than 125 mg/L and one in ten more than 206 mg/L. The figure comes from 80 wells and 84 samples taken between 1984 and 2002 (half of them by 1998).

Most samples are older than ten years. Groundwater hardness comes from the rock the well is drilled into and changes slowly, but your own well can be quite different, so treat this as a regional indication and test your water.

What this hardness means for a well household

How to test your well in Nebraska

Hardness is only one part of a well test. Federal health agencies advise every private well owner to test regularly:

Use a certified laboratory: Nebraska DHHS list of certified laboratories (certification numbers and certified analytes).

Testing is your own responsibility: no state agency samples existing private wells routinely.

What a test costs (Nebraska DHHS Public Health Environmental Laboratory)

Nitrate sample kit (plus postage)$16

Prices as printed by the lab (2024-03-08); check the current fee before you send a sample. Nebraska DHHS Public Health Environmental Laboratory

If no local lab suits you, mail-in kits from certified labs test a wider panel at home; they cost more than a state or county lab.

Treating hard well water

Most households with hard well water install an ion-exchange softener. Test iron and manganese first: above about 0.3 mg/L iron a softener alone is not enough and an iron filter goes in front of it.

Nearby counties

Perkins County8.8 gpgDundy County9 gpgHayes County9.8 gpgHitchcock County21.1 gpgYuma County, CO9.2 gpgKeith County7.6 gpg

FAQ

How hard is well water in Chase County, Nebraska?

The median well sampled by the USGS in Chase County has 8.2 gpg (140 mg/L as CaCO₃), which is hard. One in ten wells had less than 125 mg/L and one in ten more than 206 mg/L.

Is my own well the same?

Not necessarily. Hardness depends on the rock layer your well draws from and on its depth, so neighbouring wells can differ by a factor of two or more. Only a test of your own water tells you.

How often should I test my well in Nebraska?

Every year for coliform bacteria, nitrate, total dissolved solids and pH (EPA and CDC advice), and after floods, repairs or a change in taste or smell. Hardness, iron and manganese once, and again before you buy a softener.

Do I need a water softener for my well?

Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.

Where does this figure come from?

From 84 samples of 80 wells measured by the U.S. Geological Survey between 1984 and 2002, retrieved from the Water Quality Portal. We publish a county only when at least 10 wells were sampled.

Source and method

Computed by Water Hardness Atlas from USGS National Water Information System samples (characteristic "Hardness, Ca, Mg", sites of type well, samples since 1980), retrieved 2026-10-29 through the Water Quality Portal. For each well we take the median of its samples, then the median of all wells in the county; wells above 1,000 mg/L (oil, gas or mine brines) are left out. USGS data are in the U.S. public domain. Water Quality Portal query

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