Trinity Pools StLPool builder in O'Fallon, MO

Trinity Pools StL is ranked #18 of 108 pool builders in O'Fallon by CR Score, with 55 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Trinity Pools StL is open Monday to Saturday. Its listed hours are Monday to Friday, 8 AM – 6 PM; Saturday, 9 AM – 3 PM. On Saturdays it is open 9 AM to 3 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves O'Fallon and 12 towns within 40 miles: Chesterfield, Ballwin, Manchester, Ellisville, Town and Country, Maryland Heights, Creve Coeur, Weldon Spring, Saint Charles, Des Peres, Saint Peters and Wildwood. The list is based on the business's location and the usual service radius for pool building. Confirm your address is covered when you call.

Trinity Pools StL has a rating of 5.0 from 9 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Trinity Pools StL on (314) 753-5300. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.