Don't show this message again
§ 141.711 Filtered system additional Cryptosporidium treatment requirements.
(a) Filtered systems must provide the level of additional treatment for Cryptosporidium specified in this paragraph based on their bin classification as determined under § 141.710 and according to the schedule in § 141.713.
| If the system bin classification is . . . | And the system uses the following filtration treatment in full compliance with subparts H, P, and T of this part (as applicable), then the additional Cryptosporidium treatment requirements are . . . | |||
|---|---|---|---|---|
| Conventional filtration treatment (including softening) | Direct filtration | Slow sand or diatomaceous earth filtration | Alternative filtration technologies | |
| Bin 1 | No additional treatment | No additional treatment | No additional treatment | No additional treatment. |
| Bin 2 | 1-log treatment | 1.5-log treatment | 1-log treatment | ( 1) |
| Bin 3 | 2-log treatment | 2.5-log treatment | 2-log treatment | ( 2) |
| Bin 4 | 2.5-log treatment | 3-log treatment | 2.5-log treatment | ( 3) |