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Water Hardness in Prince Frederick, MD

Maryland · 1 zip codes · 17 matched water systems

109 PPM
6.3 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 202617 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 17 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
17 USGS-backed sources
17 matched systems total for this city; 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 in Prince Frederick

These systems are matched to Prince Frederick, MD. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

17 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.
Prince Frederick
MD0040011
Slightly Hard
109 PPMgroundwater4,371 servedHigh Confidence — USGS Monitoring
Solomons
MD0040027
Slightly Hard
109 PPMgroundwater3,811 servedHigh Confidence — USGS Monitoring
Chesapeake Heights (Bayside Forest)
MD0040018
Slightly Hard
109 PPMgroundwater1,190 servedHigh Confidence — USGS Monitoring
Summit/Highlands
MD0040026
Slightly Hard
109 PPMgroundwater1,108 servedHigh Confidence — USGS Monitoring
Cross Point Subdivision
MD0040052
Slightly Hard
109 PPMgroundwater434 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Prince Frederick, MD

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Prince Frederick, MD.

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Frequently Asked Questions

How hard is the water in Prince Frederick, MD?

The citywide weighted average water hardness in Prince Frederick, MD is 109 PPM (6.3 GPG), classified as slightly hard. This is based on 17 matched water systems.

Do I need a water softener in Prince Frederick, MD?

At 109 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Prince Frederick, MD 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 Prince Frederick, MD?

Prince Frederick, Maryland is served by 17 matched water systems across 1 zip code.

Learn More About Your Water