Can the virus exist in drinking water?

Conventional water treatment methods that use filtration and disinfection, such as those in most municipal drinking water systems, should remove or inactivate the SARS-CoV-2 virus that causes COVID-19.

Can the SARS-CoV-2 virus spread through pools and hot tubs?

Proper operation, maintenance, and disinfection (e.g., with chlorine and bromine) of pools and hot tubs should remove or inactivate the virus that causes COVID-19. However, chlorinated pools do not decrease your risk of droplet transmission of the virus (being coughed or sneezed on) and we recommend to practice social isolation and quarantine as recommended by the health authorities in your country during this pandemic.

What about sewers, gutters, and feces?

The virus that causes COVID-19 has been detected in the feces of some patients diagnosed with COVID-19. The risk of transmission is expected to be low. There have been no reports of fecal-oral transmission of COVID-19 to date.

Transmission of COVID-19 through sewage may be possible, there is no evidence to date that this has occurred. SARS, a similar coronavirus, has been detected in untreated sewage for up to 2 to 14 days. In the 2003 SARS outbreak, there was documented transmission associated with sewage aerosols. Therefore, wastewater and sewage workers should use standard practices, practice basic hygiene precautions, and wear personal protective equipment.

Source:
Water Transmission and COVID-19
https://www.cdc.gov/coronavirus/2019-ncov/php/water.html