If you see white crust on your faucets, spots on your dishes or a shower head that slowly loses pressure, you are seeing Jacksonville’s hard water at work. Our tap water comes from the limestone Floridan aquifer and carries high levels of calcium and magnesium. Here is how hard it really is, what it does to your pipes, fixtures and water heater, and the options for treating it.
Water hardness is measured in grains per gallon (gpg) or milligrams per liter (mg/L). The University of Florida IFAS Extension classifies water above 10.5 gpg (180 mg/L) as very hard. Local water treatment companies commonly report Jacksonville homes testing well above that, often in the mid-teens to more than 20 grains per gallon, with levels varying by neighborhood and water source.
JEA publishes its water quality results every year in its Water Quality Report, and a simple test at your kitchen tap will tell you exactly what your home is dealing with before you choose any treatment.
Because the local water supply comes from groundwater wells, hardness stays high all year. Home water quality tests, either inexpensive test strips or a professional test, are the best way to learn your exact number.
PureFlo Tip: Private wells draw from the same mineral-rich aquifer system and can also carry iron or a sulfur smell, so always test well water before choosing treatment equipment.
None of these is dangerous on its own, but together they add up to higher energy use, more cleaning and shorter lives for your fixtures and appliances. Over the long term, scale can also reduce appliance efficiency in water heaters, dishwashers and washing machines.
When water is heated, dissolved calcium and magnesium come out of solution. In a tank water heater they settle as sediment on the bottom and insulate the water from the element or burner. The heater works harder, energy bills rise and the tank wears out sooner. Popping or rumbling sounds are a common sign of a thick sediment layer.
Tankless units suffer too: scale coats the heat exchanger and can cause error codes or reduced flow. Annual flushing for tanks and regular descaling for tankless water heaters keep them efficient. If your heater is near the end of its life, see our guide to water heater replacement cost in Jacksonville.
Scale builds up wherever water sits or flows slowly: faucet aerators and cartridges, shower valves, toilet fill valves and flappers, dishwasher and washing machine inlet valves, and ice makers. Over time that buildup causes drips, running toilets, weak flow and early fixture replacement.
Inside older galvanized pipes, scale and corrosion gradually narrow the line and reduce water pressure. Copper and PEX handle hard water better, but the fixtures and appliances connected to them still take the hit.
A softener needs a little attention: keep the brine tank stocked with salt, have it checked if the water starts feeling hard again, and make sure it is sized for your household and your water’s hardness. A failing or poorly set unit can regenerate too often and waste water, which can show up as a higher JEA water bill.
A professional installation includes a bypass valve, a proper drain connection and settings matched to a hardness test, so the system protects your plumbing without wasting salt or water.
Once it is set up correctly, soft water means less scrubbing, less soap and detergent, and fixtures that stay clean longer.
PureFlo Plumbing installs water softeners, whole-home filtration and under-sink systems across Duval, St. Johns, Clay and Nassau Counties. We will help you choose the right system for your water and your home, and install it to code.
Yes. Jacksonville’s tap water comes from the limestone Floridan aquifer and is classified as very hard, well above the 10.5 grains per gallon (180 mg/L) level that UF/IFAS Extension uses as the threshold for very hard water.
Yes. The calcium and magnesium that make water hard are not a health hazard. Hard water is mainly a cleaning, appliance and plumbing problem.
Inexpensive test strips from a hardware store give a quick reading in grains per gallon or mg/L. JEA customers can also review JEA’s annual Water Quality Report. For private well water, a lab test gives the most complete picture.
A softener is not required, but many Jacksonville homeowners choose one because very hard water shortens the life of water heaters, fixtures and appliances and leaves scale throughout the home.
Softeners are sized by grain capacity based on your water hardness and how much water your household uses each day. Testing your water first lets the system be sized so it does not regenerate too often or run out of capacity.
A properly sized softener with the right valve and plumbing connections has little noticeable effect on pressure. An undersized unit, a clogged sediment filter or fouled resin can reduce flow.
Softened water contains a small amount of added sodium. If you want to avoid it, common options are a reverse osmosis system at the kitchen tap or using potassium chloride instead of salt in the softener.
No. A salt-free conditioner can reduce scale formation, but it does not remove calcium and magnesium, so the water still tests hard. For very hard water, a salt-based softener is the most effective solution.
In Jacksonville, flush a tank water heater at least once a year. Tankless water heaters should be descaled on the schedule the manufacturer recommends, which is often once a year in hard water areas.
Indirectly, yes. Scaled toilet fill valves can cause running toilets, worn faucet cartridges can drip, and a malfunctioning softener can get stuck regenerating. All of these waste water and can raise your JEA bill.
Call 904-803-0495 or send us a message and a PureFlo plumber will help you choose the right water softener or filtration system for your Jacksonville home.
