YOU SAID:

you can bring a horse to water but cannot make it drink

INTO JAPANESE

馬を水に連れて行くことはできますが、飲ませることはできません

BACK INTO ENGLISH

You can take a horse to the water, but you can't make it drink

INTO JAPANESE

馬を水の所まで連れていっても水を飲ませることはできない。

BACK INTO ENGLISH

You can lead a horse to water, but you cannot make him drink. [Proverb]

INTO JAPANESE

馬を水際まで連れて行くことはできても、水を飲ませることはできない。

BACK INTO ENGLISH

You can lead a horse to water, but you cannot make him drink. [Proverb]