Yes, swimming in a pool with high calcium hardness is considered safe as long as you have sufficient chlorine and pH levels to keep bacteria growth under control. The main issue with high calcium hardness is that it damages your pool through rust and corrosion. However, if your water is hard enough to corrode your pool, you might want to consider finding methods to make it safe for drinking at home.

Your contractor will need several days to several weeks as far as a timeline to install your semi-inground pool goes. Adapting an aboveground pool to be semi-inground by excavating and partially burying the liner, for example, will only take three to five days, while installing an in-ground pool with a poured concrete liner and building up the land around it will require several weeks. Keep in mind that the process of hiring a pool contractor and applying for permits can add several additional weeks to the total timeline.

It’s not ideal to swim in a cloud pool, as it can be a sign of algae, bacteria, or calcium buildup as well as chlorine, pH, or alkalinity imbalances. It is best to avoid cloudy water in pools until you determine the cause of the color change.

The total time to install an inground pool typically ranges from 8 weeks to 4 months. This timeline can be influenced by several factors, including permitting, site preparation, and the construction process itself.

Key phases and their typical durations include:

• Permits: Obtaining necessary permits can take anywhere from two to six weeks.

• Excavation and Site Preparation: This phase takes about a week but can be extended by problematic soil, unexpected ground conditions, or the need to move underground utility lines.

• Construction: The actual build, including plumbing and electrical work, often takes one to two months. The pool material is a major factor here; a concrete pool needs about 30 days to cure, while installing a fiberglass or vinyl liner is much faster.

External factors can also cause significant delays:

• Contractor Availability: Spring and summer are busy seasons, and high demand can lead to long waitlists, potentially adding months to your start date. It is often recommended to start planning and getting estimates up to a year in advance.

• Other Delays: Weather, material shortages, complex designs, and other unforeseen challenges can extend the project timeline.