🏊 Official Rankings
10 Best Pool Service in O'Fallon, MO (August 2026)
We compared 10 pool service serving O'Fallon and Saint Charles County, Missouri, and ranked the top providers by verified reviews, ratings, and local reputation — 794 customer reviews in all.
The 10 listed below hold an average rating of 4.8 out of 5, led by Show Me State Pressure & Softwashing. Updated for August 2026.
- Pool Service ranked
- 10
- Average rating
- 4.8★
- Reviews analyzed
- 794
- Area codes
- 636, 314
#1
Show Me State Pressure & Softwashing
⭐ 5.0 · 170 reviews
1175 Pinewood Pl Dr, O'Fallon, MO 63366
#2
Just In Time
⭐ 4.9 · 110 reviews
506 S Cool Springs Rd, O'Fallon, MO 63366
#3
#4
Peine Lawn Care and Landscaping LLC
⭐ 4.8 · 41 reviews
17 Porta Dr, O'Fallon, MO 63366
#5
Vickscapes Pools & more
⭐ 5.0 · 17 reviews
1004 Brook Mont Dr, O'Fallon, MO 63366
#6
S Kay Pools
⭐ 4.7 · 37 reviews
2905 N St Peters Pkwy, St Peters, MO 63376
#7
Foss Swim School - O'Fallon
⭐ 4.6 · 122 reviews
1680 Highway K, Megan Crossing, O'Fallon, MO 63366
#8
#9
Blue Haven Pools & Spas
⭐ 4.5 · 121 reviews
151 N Service Rd, St Peters, MO 63376
#10