Water Treatment
Services in
Tequesta, FL

Tequesta's water situation is genuinely confusing to many residents, and it's worth explaining clearly. The Village of Tequesta is geographically adjacent to Jupiter — and Jupiter Utilities, which serves eastern Jupiter, is one of the best-rated water utilities in South Florida, using membrane nanofiltration that reliably removes PFAS and produces water at around 10–14 GPG. This makes it the obvious assumption that Tequesta is on the same system. It isn't. Tequesta has its own Village water treatment plant — Tequesta WTP (FL4501438) — which draws from the Surficial Aquifer through wellfields on the barrier island and treats through conventional lime softening, filtration, and chloramine disinfection. Some eastern and southern Tequesta areas are served by Seacoast Utilities Authority (FL4501124), which also uses conventional treatment. Neither uses Jupiter Utilities' membrane system.

EWG's analysis of Tequesta WTP data shows PFAS (6:2 FTSA above EWG's 1 ppt guideline) and haloacetic acids above health-based guidelines. EWG's analysis of Seacoast Utilities Authority data shows chromium-6 above 0.02 ppb, HAAs above guidelines, and PFOA detected. These are not violations — Tequesta's water meets all federal standards. But the independent health guidelines EWG applies are set at the one-in-one-million cancer risk level, which is far more stringent than federal MCLs.

The PFAS situation in Tequesta is linked to the regional northern Palm Beach County aquifer contamination. The Biscayne Aquifer carries PFAS from decades of firefighting foam use at airports and military installations, atmospheric deposition documented by FIU researchers, and other regional sources. PBCWU's conventional treatment does not reliably remove PFAS — unlike Jupiter Utilities, which uses nanofiltration and RO specifically effective against PFAS. For Tequesta residents concerned about PFAS, an under-sink reverse osmosis system provides 90–99% removal at the drinking water tap.

Tequesta water at 12–16 GPG is hard for a community so defined by water — Loxahatchee River access, Jupiter Inlet proximity, Intracoastal waterways. Every boat wash, pool refill, outdoor shower, dock hardware rinse, and garden hose use exposes hard water to surfaces where mineral scale becomes visible quickly. The lime softening at Tequesta's treatment plant reduces some hardness but finished water is still meaningfully hard — well above the 7 GPG damage threshold.

The single most important thing Tequesta residents should understand about their water: being in Tequesta is not the same as being on Jupiter Utilities. Jupiter Utilities uses membrane nanofiltration — the same technology the EPA classifies as best available for PFAS removal and contaminant reduction — and produces water at 10–14 GPG with PFAS consistently undetected. Tequesta's utilities use conventional lime softening with no membrane stage. The practical difference: PFAS is detected in Tequesta water but not in Jupiter Utilities' treated water. Over a year — a typical household uses 80,000–120,000 gallons — that's between 55 and 80 pounds of mineral load flowing through your water heater, dishwasher, washing machine, and plumbing. Most of it flushes through. A meaningful portion of it deposits on heated surfaces, inside pipes, and on every fixture where water evaporates.

The water heater takes the worst of it. Calcium carbonate's inverse solubility — the property that makes it precipitate out of solution as water heats — concentrates scale deposits on the heating elements inside a tank water heater. Research from the Water Quality Research Foundation found that water heaters on hard water above 26 GPG lose up to 48% of heating efficiency and fail up to 30% sooner. The hardness difference between Tequesta and Jupiter is less dramatic than the PFAS difference. Tequesta's 12–16 GPG and Jupiter Utilities' 10–14 GPG are in a similar range — both cause meaningful scale, both benefit from a water softener, neither is at the extreme end of the South Florida hardness spectrum. The upgrade that matters most for Tequesta residents is an under-sink RO — which addresses the PFAS and chromium-6 that Jupiter Utilities' membrane system handles at the utility level.

A water softener sized for Tequesta's 12–16 GPG — which means a 32,000–48,000-grain system for most households — delivers soft water at 0 GPG throughout the home. The scale formation stops immediately. Existing scale inside water heaters and appliances softens over time as soft water contacts it. Detergent and soap consumption drops 40–60% within the first month. Shower water feels dramatically different — not because it's been treated with anything added, but because the mineral film has been removed from the equation entirely.

We start every Tequesta job with a free in-home water test — and we confirm which of the two systems serves your address (Tequesta WTP or Seacoast), since the contaminant profiles differ somewhat between them. We measure your specific water at your specific tap — not the city's system average, not an EWG database reading. Your hardness in GPG, chloramine concentration, iron content, pH, and total dissolved solids. For homes in pre-1986 neighborhoods, we recommend a certified lab lead test as part of the consultation, which we arrange at no charge.

From the test, the system recommendation is straightforward. Most Tequesta homes benefit from a combination of whole-house catalytic carbon (for chloramine taste, odor, and disinfection byproduct reduction throughout the home), a water softener sized for 12–16 GPG (for appliance protection and scale elimination), and an under-sink RO (for PFAS, chromium-6, and lead removal at the kitchen tap). This three-stage combination runs $2,400–$4,600 installed. Given Tequesta's PFAS and chromium-6 profile, the under-sink RO is the priority installation if budget requires a phased approach.

Installation is same-day for most standard residential systems. We use Fleck and Clack industrial control valves — the same components found in commercial water treatment facilities — backed by 5-year valve warranties and 10-year tank warranties. We install 10% crosslink resin specifically selected for South Florida's chloramine water. After installation, we're a local company that answers its phone: for filter changes, salt delivery to Tequesta (33469), or system service, you call us directly — not a national call center.