6. A higher [grade] is water in seeps that has not ceased [seeping]. [If] a tamei person drank [from it] and then a tahor person drank [from it], he [remains] tahor. [If] a tamei person drank [from it] and then one drew [from it] into a tahor vessel, it [remains] tahor. [If] a tamei person drank [from it] and then a loaf of terumah fell [into it], although he rinsed it, it [remains] tahor. [If] one drew [from it] with a tamei vessel and then a tahor person drank [from it], he [remains] tahor. [If] one drew [from it] with a tamei vessel and then one drew [from it] into a tahor vessel, it [remains] tahor. [If] one drew [from it] with a tamei vessel and then a loaf of terumah fell [into it], although he rinsed it, it [remains] tahor. [If] tamei water fell [into it] and then a tahor person drank [from it], he [remains] tahor. [If] tamei water fell [into it] and then one drew [from it] into a tahor vessel, it [remains] tahor. [If] tamei water fell [into it] and then a loaf of terumah fell [into it], although he rinsed it, it [remains] tahor. It is fit for terumah and for [ritual] rinsing of the hands.

7. A higher [grade] is a mikveh that contains forty se’ah, for in it one may immerse oneself, and [in it] one may immerse [things]. A higher [grade] is a spring that has little water and it was increased by a greater amount of drawn water. It is equal to a mikveh in that it purifies [only] with still water, and [it is equal] to a spring in that one may immerse [things] therein whatever its amount.

8. A higher [grade] is spoiled [spring]water, for it purifies [also] when in motion. A higher [grade] is living water, for therein there can be immersion of zavim, and [therewith] there can be sprinkling for metzoraim, and it is fit to consecrate therefrom purification water.

1. [If] a tamei person went down to immerse himself, [but] there is a doubt whether he immersed himself or did not immerse himself; or [alternatively] even if he [definitely] did immerse himself, there is a doubt whether there was forty se’ah [of water] or not; or [alternatively] there were two mikvaos, one containing forty se’ah and the other not, and he immersed himself in one of them but does not know in which one — these doubtful cases are [adjudged] tamei.