Water resistance is something so trivial, yet it makes a significant difference with a smartphone experience. It can be the difference between a smartphone surviving a rainstorm, VS a smartphone getting fried by the moisture in the bathroom after a hot shower. Android Police reports from a reliable source that the Pixel phones will both be IP53-certified for protection against water being sprayed at low pressure at up to about 60 degrees from vertical. This is the same rating that was given to the HTC 10. With that being said, the report seems quite likely. To put it in simpler...
Source: http://www.gsmarena.com/pixel_phones_will_reportedly_carry_ip53_immersion_protection-news-20644.php
