Harmful algal bloom scientists · fresh and salt water
Blooms keep coming back because the cause is usually in the bottom. We find it, rank the fixes, and prove they worked.
Holding a proposal from a pond company? Get a free second opinion before you sign.Upload itYour first call goes straight to our scientists, published academic algal-bloom and water-quality experts. 573-WATERDX
Our founders' university research has been funded by
No endorsement implied.
Three ways to work with us
$0
$179 or $299/yr with one extra checkup
Quoted per site Golf courses, resorts, multi-pond communities, agencies
Pond Health Check guarantee: Clear answer or your money back — if we can't tell you what's driving it, you get your money back.Details
Upload the proposal or quote. A WaterDx scientist reads it and follows up by email or phone with what holds up, what's missing, and what to ask your vendor. It's free, and you don't have to change vendors.
How we find the fix
Every recommendation comes from our own models of how ponds, lakes and coastal water work, developed and field-tested over years of published research, and calibrated to your water with real measurements. A scientist reviews every result. Software and AI take care of the routine work, which is why it's over 10× cheaper and faster than a traditional consulting study.
Pull the levers
An example water body where the sediment supplies most of the nutrients. Change the levers and see what three weeks of algae would do. It rises every afternoon and falls overnight.
Cut what the sediment releases bed treatment, oxygen
Intercept runoff buffers, stormwater capture
Flushing circulation, exchange
No change after three weeks, vs. doing nothing
With your levers Doing nothing
A simplified run of the kind of model we calibrate to every site, with generic settings: an illustration, not a forecast for your water. Here the bed feeds the bloom, so cutting what the sediment releases does far more than intercepting runoff. On your site, measurements decide which lever matters.
Trace your water on a map. In a few minutes you get a preliminary read by email: how healthy it looks, a map of its worst bloom day, whether the problem seems to come from the bottom or from runoff, and the next step. A scientist then follows up.
We mail you a kit. You sample from the bank in about 20 minutes, including a throw sampler that pulls up the bottom from out in the pond. Our lab runs 14 measurements on your water, the bottom and the algae, and a scientist calls you with a ranked plan and the reasons behind it. No site visit.
Kits ship to the 50 U.S. states, Puerto Rico, the U.S. Virgin Islands and the Caribbean, and come back by prepaid USPS Priority Mail Express. The toxin test (microcystin, anatoxin, cylindrospermopsin) is freshwater only.
For golf courses, resorts, communities with a chain of ponds, saltwater beaches and public agencies. Scoped on a call and quoted up front. A scientist calls you back within 1 business day.
Also welcome: water and power utilities, aquaculture farms, industrial sites, environmental consultants.
Our team works on site and pins down what's feeding the algae, and where.
Treatment goes only where it's needed, with an untreated area to compare against.
One pond first, then the rest, in your quiet weeks. You approve each step.
Drone and satellite checks, before and after, in a portal you can see.
Schematic examples; yours come from your site's measurements.
Clear for years, then brown-green in February 2026. Our team sampled the water and the bottom, found the driver, and timed three treatments (circulation improvements and nutrient reduction) with the resort. We don't name clients.
Water algae fell after Treatments 1 and 2. With clearer water, algae began growing on the floor, and Treatment 3 kept it away.
“Thank you for all the work you've put in with us. The improvement since my visit last week is clear, and we want to keep the momentum going. Our neighbors are fighting the same problem; I'd happily point them your way.”
— Environmental lead, a major hospitality client (paraphrased)
Fresh and salt water
Most bloom fixes were developed for freshwater lakes, and they often fail in saltwater canals, marinas and beaches. Our founders work in both.
Seawater sulfate frees phosphorus held in the sediment (Caraco et al. 1989).
A phosphorus-only plan can miss the lever (Conley et al. 2009).
Algaecides are toxic to coral and shellfish larvae (e.g. mussels).
Our story
Algae products sold with little evidence. Almost no clear guidance on treating water, least of all salt water. And the sediment, often the biggest nutrient source, ignored.
We've spent decades running public research programs on exactly these problems. Our founders' university research has been funded by EPA, NOAA, FDEP, NASA, NSF and others. No endorsement implied. WaterDx brings that science to the private sector.
Who you're working with
Co-founder & CEO
Associate Research Professor at FAU Harbor Branch Oceanographic Institute, leading harmful-algal-bloom research for NOAA, EPA and the State of Florida, fresh and salt.
Co-founder & CTO
Lead author of the peer-reviewed sediment studies behind our technology, from Lake Okeechobee to the Gulf of Mexico.
One pond you look after yourself: the free read, then the $179 Pond Health Check. A whole property, a chain of ponds, a saltwater beach or a public water body: a custom program, quoted per site.
No. It runs on our own models of how ponds and coastal water work, built and field-tested in our published research and calibrated with your measurements. AI handles routine work; a scientist reviews every result.
Call or email us. For now every order and quote goes through a scientist first.
No. We can work alongside them: we tell you what to ask for and when, and check that it worked. Holding their proposal? Get a free second opinion on it.
A vendor you choose. We help you pick one that fits your cause, set the timing, check the result, and take no referral fees.
On water about 1 acre and up. Smaller than that, start with the Pond Health Check.
Yes, as a +$89 add-on for freshwater ponds: microcystin, anatoxin and cylindrospermopsin.
With the Pond Health Check: Clear answer or your money back — if we can't tell you what's driving it, you get your money back. Details.
Reach us directly
No call center, no sales rep. Thirty minutes with a scientist, no obligation. Orders and quotes too.
Call the WaterDx line573-WATERDX(573) 928-3739or email [email protected]
Book a 30-minute video call