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Water Hardness in Palm City, FL

Florida · 1 zip codes · 6 matched water systems

343 PPM
20.1 GPG
Very Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20266 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 6 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
4 USGS-backed sources
6 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 Palm City

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

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.
Martin Co Utilities
FL4431891
Very Hard
351 PPMgroundwater104,105 servedEstimated — County Avg
South Martin Regional Utilities
FL4430624
Very Hard
351 PPMgroundwater27,000 servedEstimated — County Avg
Stuart, City Of - Water Plant
FL4430259
Very Hard
292 PPMgroundwater16,841 servedHigh Confidence — USGS Monitoring
Harbour Ridge
FL4565002
Very Hard
292 PPMgroundwater1,573 servedHigh Confidence — USGS Monitoring
Golden Hills Mhp
FL6424623
Very Hard
292 PPMgroundwater323 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Palm City, FL

What This Means For You

Recommendations are based on the displayed 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 Palm City, FL.

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Frequently Asked Questions

How hard is the water in Palm City, FL?

The citywide weighted average water hardness in Palm City, FL is 343 PPM (20.1 GPG), classified as very hard. This is based on 6 matched water systems.

Do I need a water softener in Palm City, FL?

With a citywide average hardness of 343 PPM, a water softener is recommended for homes in Palm City. Confirm your tap reading before sizing equipment.

Is hard water in Palm City, FL 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 Palm City, FL?

Palm City, Florida is served by 6 matched water systems across 1 zip code.

Learn More About Your Water