There are hard water stains all over my windows from the sprinklers - how do I get rid of them?

Hard water stains from sprinklers can be removed with the right cleaning approach, though prevention is key to avoiding permanent etching on your glass.

The white, chalky deposits you're seeing are mineral buildup from dissolved calcium and magnesium in Ottawa's water supply. Start with a vinegar solution - mix equal parts white vinegar and water in a spray bottle. Spray the affected areas generously and let it sit for 10-15 minutes to dissolve the minerals. Use a non-abrasive scrub pad or fine steel wool (0000 grade only) to gently work away stubborn deposits, then rinse thoroughly with clean water.

For more stubborn stains, try a commercial lime and calcium remover like CLR (Calcium, Lime & Rust). Apply according to package directions, but test on a small area first. You can also make a paste with baking soda and water for gentle abrasive action. Some homeowners have success with lemon juice or even dryer sheets, which can help break down mineral deposits.

Prevention is crucial because repeated mineral buildup can permanently etch glass surfaces. Adjust your sprinkler heads to avoid hitting windows directly, or consider installing splash guards. Clean windows regularly during irrigation season - weekly cleaning prevents heavy buildup that becomes harder to remove.

If the stains have been there for months or years, the glass may be permanently etched. In severe cases where cleaning doesn't restore clarity, window replacement might be necessary. Ottawa's hard water makes this a common issue, especially on south and west-facing windows that get the most sprinkler exposure.

For persistent staining that won't budge with cleaning, consider having a professional assess whether the glass can be restored or needs replacement.