Water Treatment
Services in
Palm Beach, FL

The water starts as rain in Grassy Waters Preserve, west of West Palm Beach, runs 16 miles along the M-Canal to the twin lakes, Lake Mangonia and Clear Lake, and is treated at the City's plant beside Clear Lake. The link to the island is old: in 1894 Henry Flagler pumped water from the same site to his Royal Poinciana Hotel. Today the plant uses coagulation, lime softening, carbon and sand filters, UV light and chloramine, and in dry spells the City can add water from Lake Okeechobee or its own wells. Our West Palm Beach page covers the lakes and the plant in more detail.

From the mainland, five pipelines cross under the Lake Worth Lagoon, and two booster stations on the island keep pressure up along its length. The Town's peak daily demand has been measured at about 9.9 million gallons. The City owns the island's water mains and pays for their replacement from a fund built into island water bills. Some of those mains are around 70 years old. In 2026 the City started replacing a 2,500-foot, 16-inch main from the 1940s under Cocoanut Row, between Royal Poinciana Way and Pendleton Lane.

Trihalomethanes and haloacetic acids keep forming for as long as disinfectant and the lake's natural organic matter are in contact, so they climb the farther water travels from the plant. The island sits at the end of the City's system, and its north tip near the inlet and its southern stretch along South Ocean Boulevard are about as far as City water goes. That is why two of the late-2023 samples above 80 ppb came from here, even though the systemwide running average stayed within the limit.

The 2024 figures were lower: a highest running average of 59.6 ppb and no single sample above about 90 ppb. Levels shift with the season, since warm water forms byproducts faster, and with how long water sits in the mains. If you'd like byproducts lower inside your home, a carbon tank on the main line reduces them in the showers, laundry and every faucet at once. Softeners don't touch byproducts, so if this is your concern, start elsewhere.

The 30-year agreement with West Palm Beach ends in October 2029, and the Town has to tell the City its plans by October 2027. In March 2026 the City said the two sides were still negotiating, and no new supplier had been announced. If no new deal is reached, the agreement provides for the Town to take over the island's distribution pipes. Concern sharpened in May 2021, when an algae toxin in the City's lakes led the health department to advise young children and other sensitive groups not to drink the tap water for about a week, and again in July 2024, when cloudiness in the treated water went over EPA's standard for a short time without a boil notice.

The Town's engineers have studied buying water from Palm Beach County, from Riviera Beach, from Lake Worth Beach, which blends reverse osmosis water from deep wells into its supply, and even building a desalination plant near Phipps Ocean Park, which the Council dropped in 2022. A new membrane plant at the City, or an RO expansion at Lake Worth Beach, would change the island's water considerably, but both would take years. For now, anything you install should be chosen for the water you have today. A carbon tank, a softener and an RO unit can all be adjusted or removed later if the supply changes.

Lead on the island comes from building plumbing, not from the City's water, and the age of the buildings varies more than people expect. Addison Mizner designed 67 buildings here between 1919 and 1924, and many in-town streets still have houses from the 1920s through the 1950s. Most of the oceanfront condominium and co-op buildings went up in the 1960s and 1970s, before the 1986 ban on lead solder. At the North End, many houses are recent rebuilds with modern plumbing.

So the real question is what is behind your walls. A replumbed 1920s house can test cleaner than an untouched 1970s apartment with original copper and brass valves. The City keeps a service-line inventory you can search by address, which covers the pipe from the main to your property. For the plumbing inside, a first-draw sample from your own tap settles it, and our page on drinking water filters explains which filters are certified for lead. Until a result comes back, let the cold water run briefly before filling a glass, and cook with cold water only.

The right setup depends on the building type more than on the water, which is the same across town. In a large house, a whole-house carbon tank needs to keep up with several bathrooms running at once, so we size it to the home's flow rate and look at where the line enters: often a mechanical room or a side yard behind the hedges. Guest houses on a separate line may need their own unit.

In a condominium or cooperative apartment, whole-unit equipment needs access to your unit's own main shutoff, space for the tank, and approval from the association or co-op board before any plumbing changes. Many owners simply choose under-sink RO for drinking water, which doesn't touch the building's pipes. Older buildings also tend to have older risers, so the lead test is worth adding at the same visit.

Our free water test is a visit of roughly 20 minutes at the kitchen sink. We read hardness, chloramine, iron, pH and total dissolved solids from your own tap, rather than relying on a citywide average or an online database. For older homes and towers, we collect the lab lead sample during the same visit.

On the island, picking the right water filtration mostly means answering two questions: whether to reduce chloramine and byproducts in the whole house, and whether to add RO for the water you drink. A softener is a third decision only if your hardness reading supports it. Most installs are finished the same day you approve the quote. After that, filter changes, salt and repairs are handled by the same local crew.