Watermeisters was formed by employees of the Orange County Sanitation District and the Orange County Water District. The club is open to others, and as of 2018 is approximately 50% employees of OCSD and OCWD, and 50% individuals from the surrounding community. The club meets in a conference room of the Sanitation District in the city of Fountain Valley very near where the 405 Freeway meets Euclid Ave. As of 2018 meetings were every Wednesday at 12:05 for one hour.
Watermeisters typically has more than 20 members, and various Watermeisters have served in leadership roles beyond the club level. Long-time Watermeisters have included Jeremy Davis DTM, Juanita Skillman DTM, Marie Hulett DTM, Ingrid Hellebrand, Barbara Collins, Michelle Hetherington and Randy Kleinman.
In 2016 International President-Elect Mike Storkey attended a special meeting of Watermeisters to bestow an award on the Orange County Sanitation District for its long-time support of the Toastmasters club which meets on its premises.