The right whole house water filter depends on what’s in your water, and South Florida’s water has a specific profile that changes the answer.
First, know what you’re filtering
The best filter depends on what it has to remove: chloramine, iron and sediment each need different media. Buying before testing is how people end up with a big tank that doesn’t fix the thing that annoyed them.
In Broward, three things are true nearly everywhere:
- The groundwater is hard. Anything over 7 grains per gallon counts as hard and Biscayne Aquifer water comes out of limestone well past that. How much reaches your tap depends on your utility, and none of them publish the number.
- Utilities disinfect with chloramine, typically around 3 parts per million, instead of free chlorine.
- The source is the Biscayne Aquifer, a shallow limestone formation, and limestone is what makes the water hard.
If you’re on a private well, none of that applies and you need a different article.
What Broward utilities report
Here is what the eight utilities serving west Broward report, compared against the Environmental Working Group’s health guidelines. Every one of them meets federal drinking water standards. EWG’s guidelines are stricter, because they weigh health alone while legal limits also weigh treatment cost.
| Utility | Above EWG guideline | Highest single result |
|---|---|---|
| City of Pembroke Pines | 14 of 32 detected | 7,600× Perfluorohexane sulfonate (PFHXS) |
| City of Sunrise | 15 of 30 detected | 596× Haloacetic acids (HAA9) (linked to cancer) |
| Miramar (East & West) | 5 of 17 detected | 249× Haloacetic acids (HAA9) (linked to cancer) |
| Plantation East & Central | 5 of 10 detected | 238× Arsenic (linked to cancer) |
| City of Weston (Indian Trace) | 11 of 18 detected | 156× Haloacetic acids (HAA9) (linked to cancer) |
| Cooper City | 3 of 9 detected | 25× Haloacetic acids (HAA9) (linked to cancer) |
| Parkland Utilities Inc. | 1 of 3 detected | 22× Radium, combined (-226 and -228) (linked to cancer) |
| Davie Town of #3 & #5 | 5 of 17 detected | 17× Haloacetic acids (HAA9) (linked to cancer) |
Look at what repeats: haloacetic acids and trihalomethanes, at the top of almost every row. Those are disinfection byproducts. They form when chloramine reacts with organic matter in the water. They come from the treatment itself, not from the aquifer.
Carbon reduces them, and the utilities’ own reported numbers are the main case for whole-house filtration here.
Pembroke Pines is the outlier. PFHxS is a PFAS compound, and carbon doesn’t reliably remove PFAS. That one needs reverse osmosis at the kitchen tap.
Source: EWG Tap Water Database, covering EPA’s assessed quarter of April to June 2024. Retrieved 2 September 2026.
Chloramine and filter media
Chloramine is chlorine bonded to ammonia. Utilities use it because it’s stable and survives the long trip through the distribution system. The same stability makes it harder to filter out.
Standard activated carbon was designed around free chlorine. Against chloramine it works slowly and exhausts early. It’s what’s in most pitcher filters, most fridge filters and most basic whole-house cartridges.
Catalytic carbon is processed so the surface breaks the chlorine-ammonia bond instead of only adsorbing what drifts past. On a chloramine supply it’s the correct choice.
If a quote says “carbon filter” without naming which type, ask. It’s the single most useful question you can put to a salesperson in this county.
What a whole house filter will and won’t do
It will remove chlorine and chloramine taste and odor from every tap. It will take out sediment. Depending on media, it can reduce some heavy metals and organic compounds.
It will not soften your water. Carbon doesn’t touch calcium or magnesium. If your complaint is spotted glassware, crusty showerheads or a water heater dying young, that’s hardness, and you need a softener instead or as well.
It will not reliably remove PFAS. For that you want reverse osmosis at the kitchen tap.
This trips people up constantly. They buy a whole house filter expecting the scale to go away, and it doesn’t, because scale was never a filtration problem.
Sizing a whole house filter
A whole house filter is sized on flow rate, driven by how many fixtures might run at once.
Undersize it and you get a pressure drop every time someone starts a second shower. Oversize it and the media can channel, meaning water carves a route through the middle of the tank and most of the media never does any work.
A two-bathroom house in Sunrise and a five-bathroom house in Weston Hills need different tanks. A quote should be sized from your fixture count.
What to look for in a quote
| Look for | Why |
|---|---|
| Named media type | “Catalytic carbon” beats “carbon”, which beats “premium filtration media” |
| Media volume in cubic feet | Tells you how much media you’re getting |
| Flow rate rating | Should match your fixture count |
| Bypass valve included | So service doesn’t mean shutting off the house |
| Media change interval | Ask how long the media is rated to last |
What most Broward homes need
For most Broward homes on city water, the setup that makes sense is a catalytic carbon whole house filter for taste and odor, a softener sized to your measured hardness, and an under-sink reverse osmosis unit for drinking water.
That’s three pieces of equipment, and you don’t necessarily need all three at once. Which ones you need depends on what your water measures, so we test before quoting.