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Water Hardness in 63052

Antonia, Missouri · Jefferson County

277 PPM
16.2 GPG
Very 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
7 USGS-backed sources
8 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 63052

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.
Jefferson Co Cons Pwsd C 1
MO6024295
Very Hard
287 PPMsurface water37,000 servedHigh Confidence — USGS Monitoring
Jefferson County Pwsd 1
MO6024292
Very Hard
270 PPMsurface water21,113 servedHigh Confidence — USGS Monitoring
Jefferson County Pwsd 3
MO6024294
Very Hard
270 PPMsurface water17,000 servedHigh Confidence — USGS Monitoring
Jefferson County Pwsd 2
MO6024293
Very Hard
270 PPMsurface water16,548 servedHigh Confidence — USGS Monitoring
Festus Pws
MO6010276
Very Hard
287 PPMsurface water12,054 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.

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How 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 Antonia, MO (63052).

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Frequently Asked Questions

Is the water hard in Antonia, MO (63052)?

The average water hardness in 63052 is 277 PPM (16.2 GPG), which is classified as very hard.

Do I need a water softener in 63052?

With hardness of 277 PPM, a water softener is recommended for homes in 63052.

Is hard water in 63052 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 63052?

Zip code 63052 in Antonia, Missouri is served by 8 water systems.

Learn More About Your Water