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Water Hardness in 65721

Ozark, Missouri · Christian County

159 PPM
9.3 GPG
Moderately Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 8 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 8 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
8 USGS-backed sources
8 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 65721

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.

8 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.
Nixa Pws
MO5010576
Moderately Hard
159 PPMgroundwater24,532 servedHigh Confidence — USGS Monitoring
Ozark Pws
MO5010619
Moderately Hard
159 PPMgroundwater22,000 servedHigh Confidence — USGS Monitoring
Pippinville & Oak Park Owners Assn
MO5036305
Moderately Hard
159 PPMgroundwater150 servedHigh Confidence — USGS Monitoring
Sussex Park Subd
MO5036150
Moderately Hard
159 PPMgroundwater130 servedHigh Confidence — USGS Monitoring
Cedar Hill Apts
MO5079527
Moderately Hard
159 PPMgroundwater102 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Ozark, MO (65721).

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Frequently Asked Questions

Is the water hard in Ozark, MO (65721)?

The average water hardness in 65721 is 159 PPM (9.3 GPG), which is classified as moderately hard.

Do I need a water softener in 65721?

With hardness of 159 PPM, a water softener is worth considering for homes in 65721.

Is hard water in 65721 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 65721?

Zip code 65721 in Ozark, Missouri is served by 8 water systems.

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