Section 141.713 - Schedule for compliance with Cryptosporidium treatment requirements(a) Following initial bin classification under § 141.710(c) , filtered systems must provide the level of treatment for Cryptosporidium required under § 141.711 according to the schedule in paragraph (c) of this section.(b) Following initial determination of the mean Cryptosporidium level under § 141.712(a)(1) , unfiltered systems must provide the level of treatment for Cryptosporidium required under § 141.712 according to the schedule in paragraph (c) of this section.(c)Cryptosporidium treatment compliance dates.Cryptosporidium Treatment Compliance Dates Table
| Systems that serve . . . | Must comply with Cryptosporidium treatment requirements no later than . . .a |
| (1) At least 100,000 people | (i) April 1, 2012. |
| (2) From 50,000 to 99,999 people | (i) October 1, 2012. |
| (3) From 10,000 to 49,999 people | (i) October 1, 2013. |
| (4) Fewer than 10,000 people | (i) October 1, 2014. |
a States may allow up to an additional two years for complying with the treatment requirement for systems making capital improvements.
(d) If the bin classification for a filtered system changes following the second round of source water monitoring, as determined under § 141.710(d) , the system must provide the level of treatment for Cryptosporidium required under § 141.711 on a schedule the State approves.(e) If the mean Cryptosporidium level for an unfiltered system changes following the second round of monitoring, as determined under § 141.712(a)(2) , and if the system must provide a different level of Cryptosporidium treatment under § 141.712 due to this change, the system must meet this treatment requirement on a schedule the State approves.