这种说法是对的，当water作为不可数名词的时候。

water不可数时

water表示“水”，是物质名词，不可数。如：

The water in the lake is so clear that you can see the bottom. 湖水清澈见底。

Please remember to water the plants while I’m away. 我不在时，请记住浇花。

As water begins to boil, bubbles rise ever faster to the surface. 水开了，气泡更快地升上水面。

The water in the lake is not particularly deep, averaging about 12 metres. 湖水不是很深，平均约为12米。

A block in the pipe was preventing the water from coming through. 管道中的东西堵住了水流。

If you give water to a small baby to drink, you have to boil it first. 如果你喂婴儿水喝，你必须先把水烧开。

We’ll take the boat out into deep water where we can dive. 我们要把小船划进我们可以跳水的深水区域。