What are the water filter options?

Andrew Huberman describes several water filter options that can be used to make tap water safer to consume. Here's a summary of the types he mentions:

1. Pitcher Filters: These are cost-effective filters, like the "clearly filtered water pitcher with affinity filtration," that can remove contaminants such as fluoride, lead, BPAs, and hormones from the tap water. The purchase is a one-time cost, typically under $100, plus occasional replacement of the filter cartridges 1.

2. Whole House Filters: These systems are more costly, upwards of $2,000, and are installed to filter all the water entering a house. They are suitable for those with higher disposable incomes who want all their tap water filtered 1.

3. Countertop Systems: Mid-priced options (between $200 and $500) like the Berkeley filter system. These systems don't require electricity and can filter large volumes of water without the need to constantly refill, as is necessary with pitcher filters 1.

4. Zero Cost Filtration: For those without the means to purchase a filter, Dr. Huberman suggests a method of letting tap water sit in an open container to allow sediments and some contaminants to settle or evaporate. This method can help reduce contaminants but is not as effective as actual filtration systems 2.

These options provide various levels of investment and effectiveness, accommodating a range of budgets and needs.