Water Hardness in Saint Augustine, FL
Florida · 4 zip codes · 11 matched water systems
City avg (weighted): 260 PPM
Dataset updated March 9, 202611 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
How this city reading is built
This city reading is a weighted rollup across 11 matched water systems and 4 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Saint Augustine
These systems are matched to Saint Augustine, FL. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Sjcu-Cr214 Mainland Wtp FL2554447 | groundwater | 260 PPM Very HardUSGS estimate: 392 PPM | |
Sjcu-Northwest Utilities Wtp FL2554471 | groundwater | 260 PPM Very HardUSGS estimate: 392 PPM | |
St. Augustine Ws FL2550210 | groundwater | 260 PPM Very HardUSGS estimate: 392 PPM | |
Sjcu-Ponte Vedra Ws FL2554343 | groundwater | 260 PPM Very HardUSGS estimate: 392 PPM | |
Sjcu-Northeast Utilities Ws FL2554475 | groundwater | 260 PPM Very HardUSGS estimate: 392 PPM |
Zip Codes in Saint Augustine, 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 Saint Augustine, FL.
Frequently Asked Questions
How hard is the water in Saint Augustine, FL?
The citywide weighted average water hardness in Saint Augustine, FL is 260 PPM (15.2 GPG), classified as very hard. This is based on 11 matched water systems. The gauge highlights Sjcu-Cr214 Mainland Wtp, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Saint Augustine, FL?
With a citywide average hardness of 260 PPM, a water softener is recommended for homes in Saint Augustine. Confirm your tap reading before sizing equipment.
Is hard water in Saint Augustine, 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 Saint Augustine, FL?
Saint Augustine, Florida is served by 11 matched water systems across 4 zip codes.
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