Here's a bit of the law from a paper by Ron Mosley, a Hebrew history scholar:
The six non-Essene restrictions on the water used in the mikveh come from the corrupt
Leviticus 11:36 text. They are:
* The mikveh can not contain other liquid besides water.
* The water has to be either built into the ground or be an integral part of a building attached to the ground.
* The mikveh can not be flowing except for a natural spring, river or ocean.
* The water can not be manually drawn.
* The water can not be channeled to the mikveh by anything unclean.
* The mikveh must contain at least 40 sa'ah or approximately 200 gallons of water. (Rabbi Yitzchok ben Sheshes said the amount of 40 sa'ah was derived from the idea that the largest normal human body has a volume of 20 sa'ah, therefore the amount of water needed to "nullify" this body is double this amount or 40 sa'ah.)
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Boy I sure hope God let's us all "slide a bit", steadfast...were probaly not performing our baptism's correctly......j/k