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e-CFR data is current as of January 14, 2021

Title 40Chapter ISubchapter DPart 141Subpart W → §141.713


Title 40: Protection of Environment
PART 141—NATIONAL PRIMARY DRINKING WATER REGULATIONS
Subpart W—Enhanced Treatment for Cryptosporidium


§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.

aStates 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.

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