Sigma Swim sigmaswim.org Sigma Swimming is Fort Worth's premier swim lessons, swim school, competitive swim team, and water polo team. Our nationally ranked and highly rated swim lessons, swim team, and water polo team are why Dallas Fort Worth chooses Sigma. Sigma Swim from Fort Worth, Texas, USA Stats 608 followers 1.83K fans 302 followers 5.07M alexa Instagram 📈 Facebook 📈 Twitter 📈 Website