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Introducing Marc Roehl, New Executive Vice President of IXOM Watercare


Ixom has strengthened its leadership team with the appointment of prominent water industry leader Marc Roehl as Executive Vice President, Watercare, based in the United States.

Mr. Roehl is an executive with more than 25 years of experience in the water and wastewater treatment sector, with a focus on industrial and municipal markets. He is currently an active board member of the global Water Council and is a member of the Water Environment Federation.

Managing Director and CEO of Ixom, David Head, said of the appointment “I am delighted to announce that Marc has joined the Ixom executive team. The growth of Ixom’s business in new North American markets is an important part of our global expansion strategy that also includes a focus on Europe and the Asia-Pacific region. It’s therefore fitting we have a person of Marc’s credentials in this key US-based global leadership position.”

Mr. Roehl is energized to deal with what lies ahead in the...

Ixom COVID-19 Update (March 17, 2020)


header image for Ixom COVID-19 pandemic update


We want to quickly update you regarding Ixom’s ongoing response to the escalation of the coronavirus (COVID-19).

Ixom has had our CEO-led Crisis Team in place for six weeks (since the virus became known) and has two specialist sub committees working on mitigating potential impacts to supply and customers. 

Ixom implemented our Pandemic Plan following the establishment of the Crisis Team, and immediate actions at that time included...

Ixom Expands Global Source Water Management 


header image of Media Press Release- Ixom acquisition of Medora Corporation

4 February 2020
Melbourne, Australia

Ixom, a global leader in water treatment and pre-treatment, today finalised the acquisition Medora Environmental (Medora), a market leader in source water management solutions.

Expanding on Ixom’s strong water capabilities including Ground Water Treatment Plants, Water Treatment Systems and strong markets in Pre-Treatment Disinfection, Chlorination and associated products and PFAS removal, the investment in the United States business strengthens Ixom’s global source water management offering. 

The acquisition will bring together two North American source water industry leaders with...

Lake Learning- Two Helpful Guides


image showing a beautiful clear lake with a SolarBee® Lake Circulator in the distance.

Medora Corporation has compiled two new reference guides to help you better understand lake vocabulary, processes and treatment options in laymen's terms. From alum applications to cyanobacteria blooms to hypolimnetic oxygenation to zooplankton to anything and everything inbetween, the "Lakes A to Z Help Guide" has it covered.

As an added benefit, learn more about...

Evaluating A Potable Tank Mixer- 5 Important Considerations


image showing a GridBee GS Series Submersible Tank Mixer being lowered through a tank hatch

You’ve decided mixing is the next best strategy to easily improve the water quality in your system. Now it’s evaluation time. Here are a few simple considerations when sifting through your tank mixing options.

#1 Initial Mixer Cost.

Many of us make a purchasing decision based on initial cost alone. Cheaper often times means exactly that… cheap; however, more expensive doesn’t always equate to a better product either. There can be hidden costs like poor component life cycles and required maintenance that can actually turn a low initial cost into a higher overall life-cycle cost.

GS Series Tank Mixers balance cost, quality, and reliability to maximize the most mixing per dollars spent.

#2 Strength of Warranty.

A strong equipment warranty not only protects your investment, it can be thought of as another way to...

3 Important Considerations For Successful THM Removal



diagram detailing components of the Medora Corporation's THM Removal System

1) Trihalomethane (THM) removal is not one size fits all.

Make sure your system is properly evaluated.

Most systems have unique characteristics that must be accounted for from the start.  Understanding how a given system works… volumes… fill rates… tank dimensions… inlet / outlet configurations… desired THM removal rates… are all critical for THM removal success.  Sometimes you just can’t fit a square peg into a round hole and having the...

In Memory Of Ken Hudnell

Many thanks and a sad farewell to our friend & colleague.


We learned today that Dr. Ken Hudnell passed away,  a very sad event for Medora Corporation.   Ken was living in New Bern, North Carolina and spent the past two years fighting pancreatic cancer. Medora Corporation, the US, and the world lost a tireless researcher dedicated to improving health by reducing toxins caused by Harmful Algae Blooms (HABs, aka blue-green algae blooms) in fresh water.

Ken joined Medora Corporation in December 2007. As a toxicologist at the US EPA, he had just finished editing the book "Cyanobacterial Harmful Algae Blooms, State of the Science and Research Needs", Springer, ©2008.  This book contains the result of many symposiums throughout the world sponsored by International Symposium on Cyanobacterial Harmful Algae Blooms (ISOC-HAB) and aimed at solving human health problems caused by HABs.

Ken called Medora Corporation out of the blue in about mid-2007.  He told me that cyanotoxins caused by HABs are making people sick all over the world, including in the US where 70% of the public gets its drinking water from surface sources.  He said the cyanotoxins are building up in people, and cause various auto-immune diseases when some level of accumulated toxins occurs.  He also said that there were several possible solutions:  (a) stop the HABs from forming in lakes and drinking water reservoirs, or (b) spend billions updating water plants to remove toxins...

Trihalomethane Removal In Municipal Drinking Water Storage Tanks

Mix Only Vs Mix-Ventilation Vs Spray Aeration Strategies


There are many, many considerations to take into account when researching and implementing a trihalomethane (THM, TTHM) removal strategy for your drinking water system.  It can all get very complex in a hurry.  

For the sake of this blog article however, we are going to focus only on...


SolarBees, Jordan Lake, & The Media

Setting The Record Straight Against Blatant Misinformation


canoe passing by SolarBee during Jordan Lake SolarBee Demonstration Project

If there is one thing we’ve learned from the Jordan Lake project, there are great people working on behalf of the State of North Carolina from NC DEQ to the Army Corp Of Engineers to the State Legislative Assembly and everywhere in-between.  Among all these dedicated players including Medora Corporation, the "say all end all" was to bring cost effective real world solutions to the table for the betterment of Jordan Lake.

If there was a second thing we learned, it’s that the NC Media has no problem getting the facts wrong in favor of agenda driven drama & politics.

Jordan Lake started and ended as a Demonstration Project to study the effects of circulation...

Review: The Role Of Phosphorus & Nitrogen In Freshwater Algae Blooms

Is the “settled” extreme pushing the science out of balance?


In August 2016, Environmental Science & Technology published an article about preventing or reducing harmful algae blooms in freshwater lakes.  "Reducing Phosphorus to Curb Lake Eutrophication is a Success”  was co-written by several lake scientists from the United States & Canada with D. Schindler (Edmonton, Alberta) as the lead author.  (read & download the article here)

The article seems to say that:

1) Phosphorus is the the only nutrient that matters to control cyanobacteria harmful algae bloom (HABs).

2) Any further discussion of nitrogen as a nutrient in this industry is a waste of time.

3) Given enough time (maybe 10-30 years), watershed protection to reduce phosphorus infow to lakes will stop cyanobacteria blooms.

The article lists about 35 lakes in the world as evidence to support the claim that phosphorus reduction can “recover" a lake.  There is not much discussion about point sources versus non-point sources in the article;  but usually 90% of phosphorus inflow to lake is non-point source, so the clear implication is that watershed protection is the only way to restore a lake.

Schindler has been saying for years that HABs are only about phosphorus; whereas, Hans Paerl (North Carolina, USA) says sometimes HABs are caused by excess phosphorus, and/or excess nitrogen, and/or other factors.  This article seemed to be a direct slam to Paerl continuing the rivalry between the two, Schindler and Paerl. 

Driving & Cell Phones Just Don't Mix

Medora’s Distracted Driving Safety Campaign


vehicle pulling up to an intersection & pedestrian cross walk- distracted driving campaignOur Medora Transport Service & Delivery Technicians pack on a lot of miles while taking care of our Customers across the United States & Canada (they logged over 532,000 miles last year alone!).  Our Regional Sales Teams also travel all over the country making presentations and visiting with our Customers & potential Customers alike.


With so many miles and so much time on the road, driving safety for our employees is a major concern.

A View From The Road

Saturdays Don’t Slow Down


I’d like to talk about how crew guys spend their Saturdays on the road.  On this particular Saturday, we met at the truck at 8AM after an overcrowded continental breakfast.

74 miles to go through the winding hills of Virginia into West Virginia. 

Time to arrival: two hours fourteen minutes.

Our service stop is a West Virginia wastewater treatment pond with three machines and seven test points.  It’s a beautiful fall drive with the changing colors of the leaves on a two-lane highway that winds through the Appalachian Mountains.

We arrive around 10:20AM with an outside temperature of only 45 degrees.  The good thing is we can see all three machines are running great so this should go smooth.