455 Mentors, Mindset, and the CWT: Owning Your Water Career with Nella Fergusson
Release Date: 12/19/2025
468 Born into Water Treatment: Tom Brandvold on AWT’s Origin Story and a Life in the Industry
Scaling UP! H2O
Tom Brandvold, CWT, has lived industrial water treatment from the inside out. In this conversation, he traces that path from sweeping floors and running sample bottles as a kid to leading Premier Water and Energy Technology and serving as a former president of . The result is not just a career story. It is a useful look at how credibility, collaboration, and standards are built over time in this industry. How Association of Water Technologies (AWT) was formed One of the most valuable parts of this discussion is Tom’s explanation of how Association of Water Technologies (AWT) began. The...
info_outline
467 From PhD to Pump Rooms: Jake Elliott on Wastewater, Efficiency, and Saying “Yes” Wisely
Scaling UP! H2O
What happens when a water chemist leaves the lab and heads to the pump room? knows firsthand. A former PhD researcher who studied resource recovery from trade‑waste customers, Jake now manages accounts at in Melbourne, working with cooling towers, boilers, chemical dosing rigs and wastewater treatment systems. He joins host Trace Blackmore to discuss how rigorous research, regulatory compliance and process automation translate into practical field work for industrial water treatment professionals. From PhD Research to Industrial Practice Jake’s academic background informs the way he...
info_outline
466 Stories, Math, and “Never Again” Moments: Inside AWT Technical Training with Dan Merritt (Part 2)
Scaling UP! H2O
AWT’s in‑person technical training is a keystone for developing competent water treaters. Yet classroom knowledge only matters when it survives the drive home and emerges later in the field. In this second conversation with —National Sales Manager at and head of AWT’s education committee—Trace Blackmore uncovers how stories, math, and memorable mistakes turn theory into intuition. Why training keeps evolving Dan explains that the rewrites courses every year. Instructors refine content, delivery and demonstrations, not for novelty’s sake, but because...
info_outline
465 From Classroom to Cooling Towers: Teaching Water Treatment with Dan Merritt (Part 1)
Scaling UP! H2O
Industrial water training only works when the knowledge transfers. That means the material lands with the audience, survives the drive home, and shows up later in the field when decisions get made. , Sales Manager at , brings a rare perspective to that problem. He started as a teacher (chemistry, calculus, physics), entered industrial water treatment on February 5, 2002, and later became part of the AWT training team. This conversation follows the path from classroom instruction to boiler rooms and cooling towers, then uses that journey to examine what makes technical training...
info_outline
464 Corrosion Coupons, Brand Building, and Having Fun at Trade Shows with Will Ritter
Scaling UP! H2O
"Don't be afraid to say I don’t know. - Will Ritter” Corrosion is expensive, relentless, and easy to underestimate—until a “lasagna battery” turns aluminum foil green and reminds you what electrochemistry can do in the real world. This conversation reframes corrosion coupons as what they actually are: a repeatable field test that can sharpen your decisions—if you treat the process with consistency. Respect the coupon, protect the data Trace breaks down why coupons became non-negotiable in his systems: they turn guesswork into usable...
info_outline
463 Mapping the Future of Water Innovation with Paul O’Callaghan
Scaling UP! H2O
“If you say something over and over often and enough, it becomes true because perception is reality.” has built a career at the intersection of water science, wastewater realities, and the practical question every operator and executive eventually faces; what actually moves innovation from idea to adoption. As Founder and CEO of, Paul explains how his team helps decision-makers put capital to work more efficiently in water by reducing uncertainty and separating signal from noise. He describes patterns he’s watched repeat across water entrepreneurs, pilots, and...
info_outline
462 From Lab Chemist to Field Mentor: Water, Culture, and Representation
Scaling UP! H2O
Industrial water work rewards people who can move between precision and practicality. brings both. She started as a lab chemist, then transitioned into field service with , where much of her work supports healthcare facilities and high-accountability programs. Lab habits that protect your tools and your data Katie describes the first surprise of field work: a central plant is “very dirty,” and the job demands good technique without chasing lab-level perfection. She shares a couple of simple practices that prevent expensive problems. Use proper lab wipes on...
info_outline
461 Corrosion, Lead, and Algae: New Tools for Old Water Problems
Scaling UP! H2O
Corrosion rarely announces itself as a “big water problem.” It shows up as leaching at the tap, residual loss in the field, premature equipment replacement, and the slow, expensive erosion of decision-quality. (CEO) and (chemist/Chief Science Officer) of lay out a system-wide view of corrosion control—starting with what changed in Flint from a technical standpoint and moving into why many utilities still struggle to meet expectations when standards and risk assumptions shift. System-wide corrosion control starts with chemistry...
info_outline
460 Building Boiler Talent: Fundamentals, Online Training, and Better Partnerships with Eric Johnson
Scaling UP! H2O
Boilers can feel intimidating the first time you step into a boiler room—the heat, the noise, the pressure gauge, and the weight of knowing that mistakes can be costly. Trace Blackmore opens with a reminder that boilers deserve respect, not fear—and that learning fundamentals is how you replace mystique with clarity. The talent gap behind the boiler room door , Founder and CEO of , explains why boiler expertise is becoming harder to replace. He points to the shrinking pipeline of boiler-trained technicians—historically strengthened by Navy steam...
info_outline
459 From Wastewater to Resource: Water Reuse with Dr. Veronika Zhiteneva
Scaling UP! H2O
Industrial water professionals are increasingly pulled into conversations about scarcity, resilience, and “where the next gallon comes from.” , CEO and Co-founder of frames water reuse as an implementation challenge more than a technology gap—and explains where the practical starting points are when the scope feels overwhelming. Moving reuse forward when the technology already exists Waterloop Solutions was founded to accelerate implementation: clarifying end-use quality, identifying post-treatment needs on the back end of...
info_outline“So one thing I never do is try to start giving remediation or advice before I truly have understood and diagnosed the problem.”
Mentorship and certifications don’t replace experience—but they can accelerate it when paired with the right mindset and a disciplined approach to learning. Nella Fergusson, CWT (District Manager, Southern California, Garratt-Callahan), lays out what “growing up” in industrial water treatment actually looks like: repeated exposure to real problems, strong diagnostic habits, and a willingness to keep learning long after year one.
Learning that keeps you employable
Water treatment evolves. Nella contrasts today’s challenges with what she faced 15 years ago and explains why complacency is the fastest path to getting left behind. She describes water treatment as industry-specific by nature—food processing cooling and commercial real estate operations don’t behave the same, don’t shut down the same way, and can’t be serviced the same way.
Diagnosing before prescribing
Her troubleshooting process starts with questions: the system’s history, what changed, when symptoms appeared, and how critical the impacted use is. She emphasizes water sampling across different times of day and refuses to offer remediation before a proper diagnosis—because misdiagnosis creates extra problems instead of solving the original one.
Career decisions, culture, and the 80/20 risk
Nella shares a candid career detour: leaving Garratt-Callahan for GE Water/Suez, then realizing quickly what she lost—support, resources, and “family”—before returning. She frames many job moves through an 80/20 lens: chasing a missing 20% can cost the 80% that already works, especially when recruiters’ incentives don’t align with yours.
Credentials that signal competence—and protect end users
Nella explains why she pursued the CWT: an industry-agreed benchmark that reflects years of varied problem-solving. She also discusses ASSE 12080 recertification and why correct sampling, shipping, labeling, and interpretation matter—particularly in Legionella and water safety work. Customers may fear testing; she argues the goal is to find risk where maintenance is weak, then build site-specific procedures that facilities can actually sustain with their staffing. Stay engaged, keep learning, and continue scaling up your knowledge!
Timestamps
02:22 - Trace message: CWT prep course + planning for 2026
09:17 - Water You Know with James McDonald
10:48 - Upcoming Events for Water Treatment Professionals
14:49 - Interview with Nella Fergusson, CWT, (District Manager, Southern California, Garratt-Callahan)
16: 27- Ongoing education + how the industry has changed
21:06 - Nella’s troubleshooting approach: history, what changed, sampling, impact, don’t prescribe before diagnosing
31:00 - Nella’s 80/20 rule for deciding whether to leave a company
34:22 - Why she pursued CWT + value of certifications in the industry
40:15 - Getting results immediately + confidence while testing
Connect with Nella Fergusson 
Email: nfergusson@g-c.com
Website: http://www.garrattcallahan.com/
LinkedIn: Nella Fergusson, CWT | LinkedIn
Guest Resources Mentioned
ASSE 12080 Certification – ASSE International
Why ASSE Certifications Matter – Garratt‑Callahan
Impact of Cooling Tower Downtime in Food & Beverage Operations – Aggreko
Scheduling Off‑Peak HVAC Maintenance – Facility Response Group
Scaling UP! H2O Resources Mentioned
AWT (Association of Water Technologies)
Scaling UP! H2O Academy video courses
Water You Know with James McDonald
Question: What is the piece of equipment called that is a heat exchanger placed in the gas passage between the boiler and the stack designed to recover exhaust gas heat into the boiler feedwater?
2025 Events for Water Professionals
Check out our Scaling UP! H2O Events Calendar where we’ve listed every event Water Treaters should be aware of by clicking HERE.
