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Water Hardness in Clewiston, FL

Florida · 2 zip codes · 9 matched water systems

548 PPM
32 GPG
Very Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20269 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 9 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
5 USGS-backed sources
9 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 Clewiston

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

9 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.
Collier County Regional Wtp
FL5114069
Very Hard
849 PPMgroundwater215,350 servedEstimated — Nearby Data
Naples Water Dept
FL5110198
Very Hard
849 PPMgroundwater82,000 servedHigh Confidence — USGS Monitoring
Marco Island Utilities (City Of)
FL5110183
Very Hard
333 PPMsurface water31,830 servedEstimated — Nearby Data
Immokalee Water
FL5110142
Very Hard
313 PPMgroundwater26,841 servedHigh Confidence — USGS Monitoring
Ave Maria Utility Company, Lllp
FL5114154
Very Hard
849 PPMgroundwater11,982 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Clewiston, 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 Clewiston, FL.

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Frequently Asked Questions

How hard is the water in Clewiston, FL?

The citywide weighted average water hardness in Clewiston, FL is 548 PPM (32 GPG), classified as very hard. This is based on 9 matched water systems.

Do I need a water softener in Clewiston, FL?

With a citywide average hardness of 548 PPM, a water softener is recommended for homes in Clewiston. Confirm your tap reading before sizing equipment.

Is hard water in Clewiston, 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 Clewiston, FL?

Clewiston, Florida is served by 9 matched water systems across 2 zip codes.

Learn More About Your Water