Water Hardness in 65066

Owensville, Missouri · Gasconade County

268 PPM
15.7 GPG
Very Hard
0Soft60120180300+
High Confidence - USGS Monitoring

Dataset updated March 9, 2026Matched to 3 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 3 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
3 USGS-backed sources
3 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 65066

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.

3 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.
Very Hard
268 PPMgroundwater2,800 servedHigh Confidence - USGS Monitoring
Very Hard
268 PPMgroundwater450 servedHigh Confidence - USGS Monitoring
Very Hard
268 PPMgroundwater25 servedHigh Confidence - USGS Monitoring

Nearby Zip Codes

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.

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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 Owensville, MO (65066).

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Frequently Asked Questions

Is the water hard in Owensville, MO (65066)?

The average water hardness in 65066 is 268 PPM (15.7 GPG), which is classified as very hard.

Do I need a water softener in 65066?

With hardness of 268 PPM, a water softener is recommended for homes in 65066.

Is hard water in 65066 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 65066?

Zip code 65066 in Owensville, Missouri is served by 3 water systems.

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