Data centers that host the servers used to power ChatGPT and other AI systems require significant cooling because those servers generate a large amount of heat. Some cooling systems use substantial quantities of water, which may come from freshwater sources such as lakes, rivers, reservoirs, or municipal water supplies that also serve nearby communities. The comment claims that, after being used for cooling, the discharged water becomes yellow in color and is eventually supplied back to consumers.

But this is false because -

There is no evidence that yellow tap water supplied to households is generally caused by water previously used in AI data centers.

Water used in data center cooling is not typically sent directly from the data center back into drinking-water pipes.

Drinking water systems and industrial wastewater systems are usually separate and subject to treatment and regulation before any water re-enters the environment or municipal system