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Water Hardness in 52247

Kalona, Iowa · Washington County

261 PPM
15.3 GPG
Very Hard
0Soft60120180300+
High Confidence - USGS Monitoring

Dataset updated March 9, 2026Matched to 6 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 6 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
5 USGS-backed sources
6 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 52247

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

6 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Wapello Rural Water Assoc.
IA9000742
Very Hard
253 PPMsurface water17,263 servedEstimated - Nearby Data
Kalona Water Dept
IA9233012
Very Hard
312 PPMgroundwater2,630 servedHigh Confidence - USGS Monitoring
Frytown Water Coop
IA5291301
Very Hard
312 PPMgroundwater67 servedHigh Confidence - USGS Monitoring
City Of Kalona - Southtown
IA9233460
Very Hard
312 PPMgroundwater60 servedHigh Confidence - USGS Monitoring
Country View Subdivision Hoa
IA9233899
Very Hard
312 PPMgroundwater55 servedHigh Confidence - USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

523562585232725652235181522461805232518052322185523592545234018652242180522411825224018052353305

What This Means For You

Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.

MethodologyData sourcesHow to test your water

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Kalona, IA (52247).

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Frequently Asked Questions

Is the water hard in Kalona, IA (52247)?

The average water hardness in 52247 is 261 PPM (15.3 GPG), which is classified as very hard.

Do I need a water softener in 52247?

With hardness of 261 PPM, a water softener is recommended for homes in 52247.

Is hard water in 52247 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 52247?

Zip code 52247 in Kalona, Iowa is served by 6 water systems.

Learn More About Your Water

How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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Well Water Hardness: Why It's Usually Hard & How to Treat It

Well water is almost always harder than city water. Learn why, how to test your well, and the best treatment options for hard well water.

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