Source Water Monitoring Starting Dates Table
Systems that serve . . . | Must begin the first round of source water monitoring no later than the month beginning . . . | And must begin the second round of source water monitoring no later than the month beginning . . . |
(1) At least 100,000 people | (i) October 1, 2006 | (ii) April 1, 2015. |
(2) From 50,000 to 99,999 people | (i) April 1, 2007 | (ii) October 1, 2015. |
(3) From 10,000 to 49,999 people | (i) April 1, 2008 | (ii) October 1, 2016. |
(4) Fewer than 10,000 and monitor for E. colia | (i) October 1, 2008 | (ii) October 1, 2017. |
(5) Fewer than 10,000 and monitor for Cryptosporidiumb | (i) April 1, 2010 | (ii) April 1, 2019. |
a Applies only to filtered systems.
b Applies to filtered systems that meet the conditions of paragraph (a)(4) of this section and unfiltered systems.
40 C.F.R. §141.701