Lansing, MI Guide to Closing the Pool and Preparing the Backyard for Winter

When should a pool be winterized in Lansing, MI?

Most pools in the Lansing area should be winterized after regular swimming has ended but before sustained freezing weather arrives. For many households, that means completing the work in early to mid-October, although the exact timing depends on overnight temperatures, water temperature, and the weather forecast.

Closing too early can allow algae to grow while the water is still warm. Waiting too long can expose plumbing, filters, hoses, and outdoor fixtures to freezing conditions. A practical rule is to begin preparing when water temperatures remain consistently below about 65°F and to finish before a hard freeze is expected.

Check the forecast for several days rather than relying on a single overnight low. A brief cool night usually does not require immediate pool closure, but repeated freezing temperatures can create problems for exposed equipment and water lines.

What should be done before adding a winter cover?

A clean, balanced pool is easier to open in spring. Before covering the pool, remove leaves and debris, brush the walls and floor, and vacuum the water thoroughly.

Test and adjust the water chemistry according to the requirements of the pool surface and equipment. The exact ranges vary, but pH, alkalinity, and sanitizer levels should be balanced before the pool is closed. Water that is too acidic or too alkaline can damage surfaces and equipment during months of limited circulation.

Avoid adding chemicals by guesswork. Read the product label carefully, never mix chemicals together, and allow enough circulation time for each adjustment. Pool chemicals should be stored in a cool, dry, ventilated location away from fuel, fertilizers, tools, and children.

If the pool has a salt system, heater, automatic cleaner, or other specialized equipment, follow the manufacturer’s winter storage instructions. Some components require draining, disconnecting, or protection from freezing temperatures.

Should the pool water be drained?

Most above-ground and in-ground pools should not be completely drained for winter. The water helps support the pool structure, and removing too much water can create pressure problems, liner movement, or structural stress.

The correct water level depends on the cover and pool design. A solid cover may require the water to be lowered below the skimmer, while a mesh cover may allow a different level. Follow the instructions specific to the pool and cover system.

An in-ground pool should not be drained below the recommended level without understanding local soil and groundwater conditions. Heavy fall rain, snowmelt, and changing groundwater pressure can affect an empty or partially empty pool. In some situations, draining too far can cause a liner to shift or a pool shell to lift.

How should pool plumbing and equipment be protected?

Freezing water expands, which can crack pipes, filters, pumps, heaters, and other components. Winterizing the circulation system generally involves shutting off power, lowering the water to the appropriate level, draining equipment, and removing water from the plumbing lines.

Typical equipment that may need attention includes:

• Pump and filter
• Heater
• Skimmer and return lines
• Automatic cleaner lines
• Chlorinator or salt-system components
• Water features and decorative fountains
• Above-ground hoses and exposed fittings

Many pool systems use compressed air or a specialized wet vacuum to clear water from the lines. After the lines are cleared, winter plugs are installed to prevent water from returning to the plumbing.

Do not rely only on draining the pump housing. Water can remain trapped in underground lines, valves, heaters, and low points in the system. Equipment manuals should be followed closely, since winterizing methods differ between sand, cartridge, and diatomaceous earth filtration systems.

Turn off electrical equipment at the appropriate disconnect or breaker before draining or servicing it. Keep electrical connections dry, and do not operate a pump that has been drained or disconnected unless the instructions specifically allow it.

What is the safest way to cover a pool?

A winter cover should be properly fitted, secured, and capable of handling local wind, rain, ice, and snow conditions. The cover should not be left loose, sagging excessively, or supported by makeshift objects.

For solid covers, standing water should be removed regularly with a suitable cover pump. Do not walk on a pool cover, even if it appears strong or frozen. A covered pool can still present a serious fall hazard to children, pets, and wildlife.

Mesh covers reduce standing water but allow some rain and snowmelt to enter the pool. Leaves and organic debris should still be removed from the cover during the fall. As leaves decompose, they can stain surfaces and contribute to poor water quality in spring.

Secure ladders, steps, diving equipment, toys, and other removable items in a dry storage area. Do not leave flotation devices or plastic furniture exposed to repeated freezing and thawing if they can be stored indoors or under cover.

How should the surrounding backyard be prepared?

Winterizing the backyard involves more than closing the pool. Fall moisture, freezing temperatures, and snow can damage outdoor surfaces and equipment if water is trapped in the wrong places.

Inspect the pool deck for cracks, lifted sections, loose stones, and areas where water collects. Small surface cracks may become larger when trapped water freezes and expands. Clear leaves from deck drains, channel drains, and other drainage points so that fall rain and melting snow can move away from the pool area.
Outdoor faucets and irrigation lines also need attention. Disconnect hoses, drain them, and store them where they will not freeze. Shut off outdoor water supplies when appropriate and drain exposed sections of irrigation systems according to their design. A small amount of trapped water can freeze and damage valves or fittings.
Before the ground freezes, inspect retaining walls, edging, steps, and slopes for erosion or settlement. Correcting drainage problems in the fall can reduce ice buildup and muddy conditions during winter and early spring.

What should be done with plants and landscaping near the pool?

Remove dead annual plants, fallen leaves, and diseased plant material from areas surrounding the pool. Organic debris can blow beneath a cover, clog drains, and create slippery conditions when temperatures fluctuate.
Avoid heavy pruning of many trees and shrubs in the fall unless there is a clear safety reason. Some plants benefit from being left undisturbed until late winter or spring. Instead, remove broken, dead, or hazardous branches that could fall onto the cover, deck, fence, or equipment.
Protect vulnerable shrubs from salt and chemical exposure if the pool area is near a walkway or driveway that may receive deicing products. Snow piled against plants, fencing, or pool equipment can also cause damage as it freezes and thaws.
Mulch can help moderate soil temperatures, but it should not be piled against tree trunks or placed where it will block drainage. Keep the pool equipment area accessible for occasional inspection during winter.

What should be checked during winter?

A closed pool still needs periodic observation. After strong winds, heavy snow, or rapid temperature changes, inspect the cover, anchors, equipment area, drainage points, and nearby trees.
Look for:

• Torn or displaced cover material
• Excessive water or snow on a solid cover
• Loose anchors or damaged straps
• Ice buildup around equipment
• Blocked drains
• Fallen branches
• Water collecting against the pool deck or foundation

Do not attempt to break thick ice with sharp tools, and do not pump water from a cover if doing so could lower the pool water below the manufacturer’s recommended level. If plumbing has frozen, avoid turning equipment on until it has thawed naturally and has been inspected for cracks or leaks.

A careful fall shutdown, combined with occasional winter checks, helps protect the pool structure, circulation system, deck, drainage, and surrounding landscape through Lansing’s freeze-and-thaw conditions.