Supplement Feature - February 2019
Find a printable version here

Aquatic Trends Report

By Emily Tipping


Considered by region, respondents from the West consistently reported the highest average operating costs, while those in the Northeast reported the lowest costs. (See Figure 9.)


From 2016 to 2017, respondents in the Midwest reported the greatest increase in average operating expenditures, with a 7.3 percent jump from $410,000 to $440,000. They were followed by the South Central region, with a 7 percent increase. The only decrease was seen among respondents from the West, who saw their average operating expenses fall 5.6 percent from $720,000 in 2016 to $680,000 in 2017.

Looking forward, the greatest increase in average operating expenditures from 2017 to 2019 is projected by respondents from the South Atlantic states, who expect their costs to rise 19 percent, from $580,000 to $690,000. They were followed by the South Central region, with a 15.2 percent increase, and the Northeast, with a 13.5 percent increase. Respondents from the West projected their expenses to rise 10.3 percent from 2017 to 2019, and respondents from the Midwest reported the most modest increase, at 2.3 percent.

Systems & Resources

We asked respondents to indicate the various types of systems used to maintain water quality in their pools, as well as their use of secondary disinfection and their resource-conservation goals.

When it comes to pool filtration, sand filters are still dominant, with nearly three-quarters (72.2 percent) of respondents indicating they currently use sand filters. Another 18.1 percent use diatomaceous earth (D.E.) filters, and 9 percent are using regenerative media filters (RMFs). (See Figure 10.)


The vast majority of respondents (84.3 percent) said they use chlorination systems at their aquatic facilities, while 12.3 percent are using bromination systems. Tablet chlorinators are used by 36 percent of respondents, while 6.5 percent are using salt chlorine generators.

Looking forward, 14.4 percent of respondents said they had plans to add new systems or update existing systems at their aquatic facilities over the next three years. In regard to pool filtration, RMFs are the most commonly planned addition, with 23.5 percent of those respondents indicating they planned to add RMFs. They were followed by D.E. filters (18.9 percent) and sand filters (18.2 percent). In addition, 22.7 percent of those respondents said they plan to add salt chlorine generation, and 12.9 percent are planning to add tablet chlorinators.