Wellington & Western Palm Beach County: Agricultural Runoff and Your Water
Published by Jared Beviano · Water Wizards Filtration
A family in The Acreage called me last summer. They'd just had their second baby and wanted to know if their well water was safe for formula.
I tested it. Nitrates came back at 9 ppm.
The EPA limit is 10 ppm — so technically, legally, the water was fine. But the American Academy of Pediatrics recommends below 1 ppm for water used to prepare infant formula. That family had been feeding their newborn water nine times over what pediatricians consider safe, for weeks, and nobody had told them.
That's western Palm Beach County in a nutshell. You're living at the edge of the Everglades Agricultural Area — 700,000 acres of intensively farmed land producing sugar cane, vegetables, rice, and sod. It's one of the most productive farming regions in the country. It's also why your water looks, tastes, and tests differently than what people get on the coast.
What You're Actually Up Against
The EAA sits just west of Wellington and Loxahatchee. Every time it rains — and in South Florida, it rains relentlessly — fertilizers, pesticides, and herbicides wash off those fields into the drainage canals that crisscross the entire region. The C-51, the L-8, dozens of smaller ditches. Those canals carry agricultural runoff directly through residential neighborhoods. Some of those canal-front properties in Wellington and Royal Palm Beach look beautiful. The water quality is another matter.
From there it's a short path into the groundwater. Western Palm Beach County's sandy, porous soil doesn't filter slowly — chemicals move through it fast, sometimes within days of application. If you're on a private well in The Acreage or Loxahatchee Groves, you're drinking what's been moving through that system.
Municipal water in Wellington and Royal Palm Beach gets treated before it reaches you, which provides a layer of protection. But it still comes from the same regional aquifer. And treatment removes bacteria and adjusts chemistry — it doesn't catch everything.
Where you are determines your risk:
Wellington (municipal water): More protected. Still shows elevated nitrates and hard water compared to coastal municipalities.
Royal Palm Beach (municipal water): Similar to Wellington. Western developments closer to the EAA show higher readings.
The Acreage (private wells): High exposure. Surrounded by canals, closest to agricultural runoff pathways.
Loxahatchee Groves (private wells): Highest risk in the region. Closest to EAA, all well water, testing consistently shows the most contamination.
Aero Club / western Wellington (private wells): Between municipal and Acreage levels. Better than Loxahatchee, worse than eastern Wellington.
The Contaminants That Matter Here
Nitrates — The One I Worry About Most
Nitrogen fertilizer gets applied to EAA fields heavily throughout the growing season. It's highly water-soluble. It travels. And in western Palm Beach County, it shows up in wells at levels that should make you pay attention.
What I see testing in this region:
Municipal water (Wellington, Royal Palm Beach): 1–4 ppm
Private wells in The Acreage: 4–12 ppm, with some exceeding the EPA limit of 10 ppm
Wells in Loxahatchee Groves: 5–15+ ppm in the worst cases
For healthy adults, nitrates below 10 ppm aren't an immediate concern. For three groups, they absolutely are:
Infants under six months are the most vulnerable. Nitrates interfere with blood oxygen transport — the result is methemoglobinemia, which you'll see called "blue baby syndrome." The American Academy of Pediatrics recommendation is below 1 ppm for any water used in formula. Most wells I test in The Acreage and Loxahatchee are above that, many significantly.
Pregnant women face increased miscarriage risk, birth defects, and developmental issues from elevated nitrate exposure. Studies in agricultural regions consistently show worse pregnancy outcomes with higher exposure.
Long-term exposure for everyone is linked to increased colorectal cancer risk, thyroid disease, and kidney problems. "Below the EPA limit" doesn't mean no risk — it means the risk falls within what regulators decided was acceptable. That's a different thing.
Pesticides and Herbicides
The EAA uses a long list of agricultural chemicals. The ones I find most consistently in western Palm Beach County water:
Atrazine is the most common. It's used heavily on sugar cane and shows up in 40–60% of wells I test in agricultural areas. It's an endocrine disruptor — it interferes with reproductive hormones even at low levels. The EPA limit is 3 ppb, but reproductive health researchers argue that limit isn't protective enough.
Glyphosate is the active ingredient in Roundup. Increasingly detected in groundwater throughout the region. The WHO classified it as a probable carcinogen. No federal drinking water limit has been set — not because it's safe, but because regulations haven't caught up.
2,4-D is a broadleaf herbicide I find in 20–30% of agricultural area wells. Linked to liver and kidney problems at higher exposures. EPA limit is 70 ppb.
Here's what makes pesticides particularly concerning: they come in combinations. A water sample from a well in Loxahatchee showing "safe" levels of any single pesticide might contain three or four of them at once. The health effects of those chemical cocktails haven't been well studied — regulators test individual compounds, not real-world mixtures.
Bacteria
Private wells near canals, particularly after heavy rain, show elevated bacteria counts. I find coliform in roughly 25% of Acreage wells I test and 20–30% of Loxahatchee Groves wells. That's not a fringe result — it's a pattern.
The mechanism is straightforward: canal water rises during rain events, agricultural operations bring animals and their waste near water sources, and shallow wells without proper casing allow surface water to infiltrate. Cryptosporidium and Giardia show up too, not just E. coli.
Arsenic and Heavy Metals
Some older pesticide formulations contained arsenic. It persists in soil long after use has been discontinued and leaches slowly into groundwater. I've tested wells in western Palm Beach County coming back at 5–8 ppb — below the EPA limit of 10 ppb, but above what health advocates consider a no-risk threshold.
When Contamination Is Worst
Agricultural runoff isn't constant — it spikes with the growing calendar.
Spring (March–May): Heavy fertilizer and pesticide application for planting. Nitrates and pesticide levels peak.
Summer (June–August): Active growing season plus Florida's rainy season. Maximum contamination risk. Bacteria counts also climb in the heat.
Fall (October–November): Post-harvest field preparation brings another round of chemical application.
Winter (December–February): Lowest contamination levels as agricultural activity slows.
A well that tests clean in January may test very differently in July after a wet summer. If your test was done in the dry season, don't assume it represents your year-round exposure.
Well depth matters too. Shallow wells under 50 feet — most private wells in The Acreage and Loxahatchee — draw from the surficial aquifer, which is most vulnerable to surface contamination. Deeper wells over 100 feet draw from the Floridan Aquifer, which has more protection. But "more protection" isn't immunity. Agricultural chemicals do eventually reach deeper aquifers.
What Effective Treatment Actually Looks Like
Different contaminants require different technologies. This is where I see people make expensive mistakes — buying one type of filter and assuming it handles everything.
Nitrates require reverse osmosis. Carbon filters don't remove nitrates effectively. Standard water softeners don't either. RO is the right tool: it removes 85–95% of nitrates and works for drinking and cooking water at the kitchen tap. If you have infants or are pregnant, an under-sink RO is the most important thing you can install. Cost: $400–900 installed, $150–250 per year in maintenance.
For wells showing nitrates above 10 ppm, a whole-house ion exchange system designed specifically for nitrate removal is worth considering. Cost: $2,500–4,500.
Pesticides require activated carbon. High-quality carbon block filters — NSF/ANSI 53 certified for pesticide reduction — remove 70–95% of atrazine, 80–95% of glyphosate, and most other common agricultural chemicals. Catalytic carbon handles some compounds better than standard activated carbon. RO adds a second layer of protection at 95–99% removal.
An under-sink carbon filter addresses drinking water ($250–600 installed). A whole-house carbon filter protects all your water ($1,200–2,200).
Bacteria requires UV sterilization. UV systems kill 99.99% of E. coli, coliform, Cryptosporidium, Giardia, and viruses — without adding chemicals to your water. Cost: $600–1,200 installed. Replace the bulb annually ($80–120). UV must come after sediment filtration — bacteria can hide behind particles and survive UV exposure.
Hard water, iron, and sulfur need their own treatment. Agricultural contamination isn't your only problem in this region. Wells here also typically have:
Hard water (200–300+ ppm): water softener, $1,400–2,500
Iron (0.5–3 ppm): oxidation and filtration, $1,500–3,000
Sulfur (that rotten egg smell): oxidation treatment, $2,000–3,500
These need to be addressed in sequence before the contamination-specific treatment, or your filters will fail prematurely.
The complete system for a private well in this region:
Stage Purpose Cost Sediment pre-filter Protects everything downstream $200–400 Iron/sulfur removal If needed $1,500–3,500 Water softener Removes hardness $1,400–2,500 Whole-house carbon Removes pesticides, improves taste $1,200–2,200 UV sterilization Kills bacteria $600–1,200 Under-sink RO Removes nitrates, final polishing $400–900 Total $5,300–10,700
Annual maintenance runs $500–800.
For municipal water users in Wellington and Royal Palm Beach, the picture is simpler. Treatment addresses the chlorine taste, hardness, and optionally adds an RO for maximum purity:
Water softener: $1,400–2,500
Whole-house carbon: $1,200–2,000
Under-sink RO (optional but recommended): $400–900
Total: $3,000–5,400
What to Test and When
The most important thing I can tell you: don't guess. Test.
Water quality varies street by street in this region. The house next door to yours might test very differently. The only way to know what you're dealing with is to actually measure it.
Private well minimums — test annually:
Nitrates
Coliform bacteria and E. coli
pH, TDS, hardness, iron
Every 3–5 years, add:
Pesticide panel (atrazine, glyphosate, 2,4-D, metolachlor at minimum)
Heavy metals (arsenic, lead)
Retest immediately after:
Heavy rainfall or flooding
Any nearby agricultural activity that seems unusual
Changes in taste, odor, or appearance
Municipal water: Your utility tests regularly and publishes annual water quality reports. For most Wellington and Royal Palm Beach residents, the main additional test worth doing is lead — if your home was built before 1986, old plumbing is your biggest potential concern, not the utility's supply.
Comprehensive pesticide testing runs $350–600. That's real money. But it's also the only way to know if the chemicals being applied on fields a mile away are ending up in your water. Given the health stakes — particularly for kids and pregnant women — it's worth doing at least once.
We offer free basic testing: nitrates, hardness, TDS, pH, iron. It won't catch pesticides, but it establishes your baseline and tells us what else to look at. Schedule one at waterwizards.ai or call us at 561-352-9989.
The Bottom Line
Western Palm Beach County has some of the most productive agricultural land in the country right next door to some of the fastest-growing residential communities in Florida. That combination isn't going away. The EAA isn't moving. The canals aren't going anywhere.
What you can control is whether that runoff reaches your family's tap.
If you're on a private well in The Acreage or Loxahatchee, there's a reasonable chance your water has elevated nitrates, detectable pesticides, or both. If you have young children or anyone in your household is pregnant, get tested before you do anything else.
If you're on municipal water in Wellington or Royal Palm Beach, your water is treated and generally safe — but the chlorine taste and hard water are real quality-of-life issues worth addressing.
Either way, we're in your backyard. We test and install throughout western Palm Beach County and know this region's water well.
