I thought printing a copy of the past might be an educational venture today. These links were working when I cited them today. Just click on "Get this one" and select PDF. That is my method.
The rules resulting from "The Clean Water Act" are called standards. There is a great deal of fiscal investment in developing these standards. There is no reason to believe at any point in time any administration needs to reinvent the wheel. Last I checked people were still people and their degree of need for healthy water hasn't changed in millennium.
There have been very few rewrites of the standards that matter. 1982 was the first standard written following the passage of the law, the research conducted and writing of the publication. The next rework of that standard occurred in 1994 with the second edition.
There were changes written in 2007, one of the last acts by the "W" administration that gave us the elevated arsenic standards. The first online version appeared. That online version was reworked twice by the Obama Administration in 2012 and 2014. The hope was to make it user friendly in 2014. Considering the hostile treatment the Obama Administration receives from the Trump White House, it is hard to say if the online version is still as streamlined and functional.
Then in 2017, Rule 3 was rewritten.
There are changes within most Republican administrations that are not funded. Changing methods as the rule of 2017 is not accompanied with funding as last I knew. That is an enormous outlay for municipalities at a time when tax laws are becoming draconian of all Blue States.
1982 "Drinking Water A selected bibliography" (click here)
1985 "Protecting Ground Water: The Hidden Resource" (click here)
1994 "Water Quality Standards Handbook: Second Edition" (click here)
2007 : "FACTOIDS: Drinking Water and Ground Water Statistics" (click here)
2017: "Clean Water Act Methods Update Rule for the Analysis of Effluent" (click here):
B. What process governs judicial review of this rule?