Our Mission

Olympic Cascade Aquatics strives to promote swimming as a lifetime sport to its member families and the community, and provide a safe comprehensive development program for its members to pursue and achieve their competitive potential at the highest possible level in the sport.  

OCA is a coach-owned USA Swimming program that works closely in association with the the Mercer Island Country Club (MICC), Mary Wayte pool (MW), Mercer Island Beach Club (MIBC), Phantom Lake Pool (PL) and its non-profit volunteer Booster Association. 

Convenient Pool Locations

Headquartered on Mercer Island, OCA pools are centrally located and easy to access from I-90 and I-405. Mary Wayte Pool is an indoor facility.  Mercer Island Country Club pool is open-air in the spring/summer, and covered in the fall/winter.  Mercer Island Beach Club and Phantom Lake pool are outdoor pools.

United Team

OCA is a cohesive group of swimmers and parents with a deep connection to the swimming community. OCA believes in safety and protection of all swimmers to create the best learning and competitive environment. We are enthusiastic supporters of our coaches and committed to creating a successful program that will enrich the lives of all who are a part of it. Please join us!

Training Groups


This program is for swimmers 6 years to 18 years old. Swimmers are divided into the following groups: 8 & Under (30 minutes), 9-11 (45 minutes), and Middle School (45 minutes) High School (60 minutes). On Saturday all groups swim for 60 minutes. Swimmers must be able to swim legal freestyle & backstroke and have an understanding of the mechanics of breaststroke & butterfly. This program focuses on exercise and preparation for swimmers to possibly compete competitively with the  OCA swim team. Swimmers must try out for this group before registering for this class.


This is the entry level practice group geared toward swimmers in the youngest age groups Swimmers will learn all four competitive strokes with the goal of completing a legal 100 IM.  Swimmers will be introduced to fun local competitions that happen 1 to 2 times a month. Meet participation is not required in this group.  Minimum requirements: 25 yards of Freestyle, Backstroke and Breaststroke and be familiar with Butterfly.

Age range  7-9yrs ( 6yrs by invitation). Practice 3 times a week for 45 minutes


This group is focused on improving skill and gaining competitive experience. The swimmer will refine all four of their strokes and skills (starts, turns, and under waters) with the goal of completing a legal 200 IM.  Other basic skills of the sport will be taught so that the swimmer can read a pace clock, follow lane etiquette, and enjoy the fun team aspects of the sport with their friends. There is an expectation to compete and participate in USA sanctioned swim meets throughout the year.

Age range  8-11yrs practice 4 days a week for 1 hour


The focus of this group is on improving technique in all strokes and racing skills with the goal of completing a legal 100 of each stroke in competition with emphasis on a strong 200 IM. Swimmer will be introduced to some longer freestyle races in this group up to 500 yards. There is an expectation to compete and participate in USA sanctioned swim meets throughout the year.  Age range  9-12 yrs practices are 1 to 1.5 hours 4 days a week.

Minimum requirements: 4 legal strokes and some competitive swimming background


This practice group is focused on development of advance competitive swimming skills. Swimmer’s in this group will continue to emphasize skill development with a greater focus on physical training to maintain technique over longer races (introduce  200s of each stroke and 400 IM).  Race strategy will be refined and a focus on local and regional competitions. Dry land is introduced in this group.

Age range  11-14yrs. Practice 1.5-2 hours 5 days a week.


This practice group works to develop the dedication, fitness and desire to become an accomplished senior level competitive swimmer. The athletes focus on advanced technique development and race strategy skills, as well as physical training.  Introduction to nutrition, dry land training and goal setting will allow group members to succeed at the State and Regional Championships. This group has a minimum attendance requirement of 60%.   

Age Range 12-18 years Practices are 1.5-2 hours 6 days a week.


This group trains to achieve each individual’s highest performance potential in swimming with the goal to reach national competitions. These athletes are dedicated swimmers who have high-level goals and are willing to put the work in to achieve those goals. Athlete preparation in this group will provide a foundation for national level competition and a successful college swimming career. This group has a minimum attendance requirement of 80%

Age range 14-18 swimmers must be in high school. Practices are 2-2.5 hours 6-7 days a week.