Reverse Osmosis Installation in Longwood, FL

If you live in Longwood, FL — anywhere from the Markham Woods Road corridor to the older neighborhoods around Lake Brantley — this page is for you. In short, a reverse osmosis Longwood install solves either the city’s hard-water profile (for City of Longwood customers) or the harder well-water chemistry (for properties in the wells-heavy outer zones). As a result, this page covers what’s in your tap water for both scenarios, the case for a softener + RO combo, and what we charge installed.

Moreover, Longwood sits in central Seminole County, between Altamonte Springs (south) and Lake Mary (north). Specifically, ZIP 32779 covers the Markham Woods Road corridor, the older neighborhoods around Lake Brantley and Lake Wildmere, the Sweetwater area, and the rural-edge properties along Wekiva Springs Road. Median household income runs about $93,000 per 2024 ACS data — solidly upper-middle, with a healthy mix of pre-1990 homes and post-2000 master-planned communities.

Furthermore, this page covers what’s actually in your Longwood water (city or well), why most homes here need a softener + RO combo, and our 4-step install process.

What’s actually in Longwood water?

Longwood has two different water supply scenarios depending on your property:

• City of Longwood Utilities (most of the city core): Treated municipal water from Floridan Aquifer wells. Typical hardness 8–10 gpg, TDS 290–340 ppm. For the most current testing data, see the City of Longwood Public Works department.
• Private wells (rural properties along Wekiva Springs Road, parts of Markham Woods, and rural Seminole County): Untreated groundwater from the Floridan or surficial aquifer. As a result, hardness runs 15–25 gpg with iron, sulfur, and sediment.

Typical chemistry across the City of Longwood system that serves the city core:

• Hardness: 8 to 10 grains per gallon — moderately hard to hard.
• TDS: 290 to 340 ppm. A whole-house RO brings that under 20 ppm.
• Disinfection: Residual disinfectant per the City’s annual Consumer Confidence Report.
• pH: Slightly alkaline, typically 7.6 to 8.2.
• PFAS: The City of Longwood participates in EPA’s UCMR 5 monitoring. Specifically, EPA’s 2024 rule sets MCLs for six PFAS compounds. A whole-house RO rejects PFAS at 95%+ efficiency.

For Longwood well-water properties, here’s what a typical well test shows (we run this test free at your home):

• Hardness: 15–25 gpg (3-4x city water)
• Iron: 0.5–2.0 ppm — responsible for orange/red staining on toilets, sinks, laundry
• Hydrogen sulfide: Common in the Wekiva-area aquifer — produces “rotten egg” smell, especially in the hot tap
• TDS: 400–700 ppm
• pH: Often 6.5–7.2 — slightly acidic, which corrodes copper plumbing over time

Why a reverse osmosis Longwood install pays off

Several Longwood-specific reasons we hear most often:

• Markham Woods Road estate properties on private wells. Specifically, larger lots and rural properties along the Wekiva Springs Road corridor are often on private wells with iron and sulfur. As a result, raw-water RO won’t work — you need a 3-stage stack.
• Older Lake Brantley homes (pre-1988). Specifically, original supply lines may have lead-soldered joints. Even non-detect lead at the main can pick up trace lead at the tap.
• Newer Sweetwater and master-planned homes still get hard water. Modern PEX or copper plumbing delivers water cleanly. However, the 8-10 gpg city water hardness still damages premium appliances over time.
• Coffee, tea, and ice taste. The chlorine residual is noticeable in cold water from the fridge dispenser. Furthermore, a whole-house RO removes the residual disinfectant and the dissolved minerals.

The reverse osmosis Longwood system we recommend

Longwood homes fall into three scenarios depending on water source:

City water (most homes) — Softener + whole-house RO combo. $4,150. Specifically, the softener removes hardness before the RO, extends membrane life 3-5x, and eliminates scale throughout the house. Furthermore, the alkaline RO post-treatment handles taste and pH balance.

City water + new construction with no visible scale — Whole-house RO alone. $2,950. However, if you’re not seeing scale yet, a single-stage whole-house RO may suffice. The RO removes TDS, residual chlorine, PFAS, and trace contaminants.

Private well (rural properties) — Full 3-stage well stack. $4,800–$5,500. Specifically, raw well water destroys an RO membrane in 4-6 months without proper pre-treatment. As a result, the stack runs prefilter (iron + sulfur + sediment, $650-$950) → softener ($1,200) → whole-house alkaline RO ($2,950).

Pricing — all-in, no surprises

System	Price installed
Whole-house alkaline RO alone	$2,950
Water softener alone	$1,200
Softener + whole-house RO (city water)	$4,150
Well prefilter stage	+$650 – $950
Full well stack (prefilter + softener + RO)	$4,800 – $5,500

Additionally, we publish these prices because we prefer customers who know what they’re buying. You’ll get a written quote inside 2 business days of a phone call. Annual maintenance plan: $195/year (optional).

Our 4-step install process

1. Free in-home water test. TDS, hardness, residual chlorine, pH, and (for wells) iron and sulfide on your actual Longwood tap.
2. Written quote in plain English. Specifically, one number, itemized.
3. Install in 4–6 hours (city water) or 6–8 hours (well stack). System mounts in the garage or utility room. Minor drywall cut where needed — we patch and paint.
4. 30-day re-test. We come back and verify the numbers.

Service area

We serve all of Longwood (32779) — Markham Woods Road, Lake Brantley, Lake Wildmere, Sweetwater, and the Wekiva Springs Road corridor. In addition, we serve adjacent Altamonte Springs, Lake Mary, Heathrow, and Oviedo well water.

FAQ — reverse osmosis Longwood questions

Is Longwood on city water or wells?

Most of the city core is on City of Longwood Utilities. However, rural and estate properties along Markham Woods Road and Wekiva Springs Road are often on private wells. Specifically, we test the supply first and recommend the stack that matches your actual water source.

How hard is Longwood city water?

Typical City of Longwood system data shows 8 to 10 grains per gallon — moderately hard to hard. As a result, you’ll see it as scale on faucets, white film on shower glass, and shortened appliance life.

What if I’m on a well in the rural part of Longwood?

We add a well prefilter stage ($650-$950 depending on iron/sulfur load) before the softener. As a result, the full well stack runs $4,800-$5,500. Specifically, we test the well water first, every time — no guessing.

Why does my Longwood well water smell like rotten eggs?

That’s hydrogen sulfide — dissolved sulfur gas that occurs naturally in the Floridan Aquifer, particularly in the Wekiva basin. Specifically, it’s most noticeable in the hot-water tap because heat releases more of the gas. As a result, a properly sized air-injection prefilter oxidizes the sulfide out.

Can you install in a Sweetwater master-planned home?

Yes. Specifically, modern Sweetwater homes have garage utility space, which makes for a clean 4-6 hour install. Furthermore, water treatment systems mount inside with no exterior changes — no HOA architectural review needed in most cases.

How long does the install take?

4 to 6 hours for the standard softener + RO combo. 6 to 8 hours if we also install a well prefilter stage.

How often does the system need service?

Annually: pre-filter swap (10 minutes) and membrane flush. In addition, every 3 to 5 years: replace the RO membrane. Importantly, well stacks have additional maintenance on the prefilter media. We offer a $195/yr service plan that covers everything.

Ready for an RO install in your Longwood home?

Call (407) 602-8249 or request a free water test. We’ll run TDS, hardness, residual chlorine, pH, and (for wells) iron and sulfide on your actual tap water. Importantly, you’ll have a written quote in 2 business days.