Fluids Handling

Do young engineers in the wastewater industry have a greater concern for the environment than their senior peers?

Landia 06/11/2025

332 4 minutes read

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Surely not?! I've met countless Site Superintendents who will admit to being over 50, for whom protecting their local watercourses and beyond is something they consider of paramount importance.

“I’m not going to dare insult the older engineers who I look up to!”, says Ryan Riddle, 36, from long-established pump and mixer manufacturer, Landia, in North Carolina.

“But I guess the environment is more on the news agenda than it's ever been, and with increasing energy prices, everyone wants to reduce their costs. Compared to my parents or grandparents, my generation does talk more about renewable energy, house insulation, and electric/fuel-efficient cars, which yes, I know, isn't terribly rock and roll!“

Riddle, as it happens, on drums, guitars and vocals, is always one to look forward to at WEFTEC's annual Jammin'4Water event, but away from his love of music, he reports a very healthy uptake of late in pump and mixer enquiries that demand much more in the way of just how long equipment will last.

‘More and more companies want to plan and avoid open-ended expenditure’

“Longevity striking a chord with engineers is very encouraging for us,” adds Riddle, “because at Landia, we're all about the long-term. Seeing our pumps and mixers still out in the field working away just fine after 20 years-plus, isn't rare. More and more companies want to plan and avoid open-ended expenditure, so we're very happy to provide an advance service plan cost for the first five years or more, which means our customers know exactly where they are and have complete peace of mind with pumps and mixers that aren't going to need replacing for a very long time. A customer can put us on that hook for those longevity forecasts, so we have to be very confident in the performance of our equipment.

Landia mixer Huntsville — Landia mixer at Huntsville, Arkansas.

Riddle says that for all the many environmental concerns, a conversation with a customer has of course to adhere with what is fiscally workable, but energy costs are now very much part of that dialogue. With every project, it is a total no-brainer for them not to be included.

“Perhaps this is driven more by dollar signs, rather than everyone suddenly caring about Planet Earth,” he continued, “but it’s all part of the discussion now, whereas maybe 20 or more years ago, it was barely on the agenda. Like with solar panels and wind turbines, which weren’t a big thing at all then. Just as younger people can look open-mouthed, for example, as to how older cars used to guzzle gas, younger engineers in our industry often do a double-take when they discover larger, older style blowers that can account for up to 70 percent of the energy required for an entire treatment process!

While pumps have their duty points and can be quantified, Riddle maintains that with mixers-even though they are harder to calculate results from-are slowly beginning to be valued as far more important assets. Ideally, he strongly believes that we should all be buying goods that last, and that aren't doomed to fail as some type of disposable commodity-especially in the wastewater industry.

“It's true,” says Riddle, “that only when maybe draining down a tank to find a huge pile of sediment, will some then see that their chosen mixers are insufficient or broken. But if your treatment numbers are a bit off, then this can be an early indicator that all is not well with your mixing regime. It might not only be under-performing but using up way too much valuable energy at the same time. Not all mixers are the same!“

With 24-hour news and the advent of addictive smartphones, Riddle says, it's hard not to feel sometimes that for younger people, the world can look nothing other than totally apocalyptic, and that part of that is the possibility or inevitability of people/countries fighting over water.

‘Being in the water and wastewater industry gives us a great opportunity to make a difference’

“The future might seem uncertain and scary,” he says, “but I think that’s always the case. Generations before had world wars going on and I’m sure that was terrifying. The truth is every generation faces an uncertain future with lots of challenges. The answer for me isn’t putting life on hold (like questioning starting a family), but just to be one of the many doing a small part to overcome the challenges as they come. Being in the water and wastewater industry gives us a great opportunity to make a difference.”

“I think this is all the more reason for young engineers to join our industry, which is always evolving. We need to constantly find solutions and figure it all out. It’s a complicated business, especially as legislation becomes ever tighter, but it’s always interesting. Trying to problem-solve, and in the real world, stay within budget, is not easy!”

Landia mixer in oxidation ditch — Landia mixer with service platform in oxidation ditch at Chinook, Montana

Riddle sees the demand for biogas becoming another strong area that is arguably of more interest to younger engineers, perhaps keener or simply more aware of wanting to know where waste goes and the fact that it is a valuable resource, and not a waste at all.

He concluded: “The municipal side seems slow compared to the enquiries we’re seeing for our equipment in agricultural and food waste biogas plants. But those who embrace all the joined-up thinking of a circular economy are very keen to embrace the possibilities of how we can expand this side of the industry to help with sustainability.”

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About us

Landia's headquarters are located in Lem, which is how it has been since 1933. Today, Landia has subsidiaries in England, Germany, Norway and the US, and a sales office in China. In addition, Landia products are sold in 45 countries worldwide. Landia supplies pumping and mixing solutions to many different industries, with the most important ones being agriculture, wastewater, biogas plants and the fish industry. In general, you will find Landia's products wherever there is a difficult medium to be pumped or mixed. Landia survives by selling quality solutions in close partnership with the customers.

Landia is not a supermarket where customers select products from the shelves. Our technical sales people are always in close discussions with customers, which ensures solutions that work. For Landia, quality in every phase a matter of course, and we have been ISO9001 certified since 1994. Quality also means that many of Landia's products have been in operation for 20-25 years even though the operating conditions may be extreme. In that way, Landia's customers achieve the lowest lifespan costs, while resource consumption is minimised, which further results in a positive impact on the environment.