noun, noun which may take the genitive case particle 'no'
fresh water; pure water
Refers to water that is not salty, not mixed with other substances, or not contaminated. Often contrasted with seawater or chemically treated water.
この池の水は真水だから飲める。
The water in this pond is fresh water, so you can drink it.
真水と海水では浮きやすさが違う。
Buoyancy differs between fresh water and seawater.
noun, noun which may take the genitive case particle 'no'
fiscal spending; government pump priming
Economic term for government spending intended to stimulate the economy. Often used in news and policy contexts.
政府は景気対策として真水の公共投資を増やした。
The government increased fresh fiscal spending on public works as an economic measure.
真水の予算は借金に頼らない支出を指す
Fresh fiscal spending refers to expenditure that does not rely on borrowing.
Compound of 真 (ma, 'true, pure') and 水 (mizu, 'water'), with rendaku voicing mizu → mizu. The economic sense is a metaphorical extension of 'pure, unadulterated' spending.