некипяченой

некипяченой

Unboiled.

Here, 'некипяченой' is used as an adjective describing the noun 'воды' (water), indicating the water that has not been boiled.

Я не пью некипяченой воды.

I don't drink non-boiled water.

In this sentence, 'некипяченой' modifies 'воды' as well, indicating the same quality of the water, specifying that it refers to water typically needed to be sterilized to avoid contamination.

Использование некипяченой воды может быть опасным.

The use of non-boiled water can be dangerous.

Here, 'некипяченой' is contrasted with 'кипяченой', emphasizing the distinction between the two states of the water.

Я готовлю суп только с кипяченой водой, а не некипяченой.

I cook soup only with boiled water, not non-boiled water.