Pool & Hot Tub Services in Plymouth, MA

Open once the freezing nights are over and close before they return. At the Plymouth-Kingston weather station, average lows stay below freezing from December through March, while the average high is 78.5 F in June and 84.0 F in July. The station averages about 120 nights a year at or below 32 F, so lines should be cleared and plugged before cold weather sets in.

It mainly affects pH. Plymouth’s town water comes from two aquifers and 13 wells, and its 2023 Water Quality Report says the groundwater is naturally corrosive, so the town adds sodium hydroxide to bring the pH to 8.5. Topping up with that water pushes pool pH upward. The report gives no hardness figure, so we test calcium on site along with pH and alkalinity.

Pools need to meet the state building code, which covers barriers. Massachusetts’ tenth edition building code (780 CMR) requires swimming pools, spas and hot tubs to comply with the International Swimming Pool and Spa Code, under section 3109.1 and residential section R327.1. Before you build or replace a pool fence, ask your town’s building department exactly what applies to your property.

They bring wind, heavy rain and debris, often while pools are closed. The National Weather Service says nor’easters are most frequent and most violent between September and April, and past storms have caused disastrous coastal flooding. A cover that is properly anchored at closing holds up better, and debris should be cleared off it after each storm so the weight doesn’t tear it.

Close it properly before winter. The Plymouth-Kingston weather station averages about 120 nights a year at or below 32 F and about 14 days that stay below freezing all day, with 37.9 inches of snow. Water left in pipes, the pump or the filter can freeze and crack them, so a closing lowers the level, blows out and plugs the lines and secures the cover.