| #P001 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.01-0.02 µg/L | method detection limit (MDL) range | | high |
| #P002 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.08-0.21 µg/L | MDL range | | high |
| #P003 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.002-0.006 µg/L | MDL range | multiple detection limits are possible due to variability in reagents, instrumentation, and/or laboratory analyst performance | high |
| #P004 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 5 µg/L | practical quantitation limit (PQL), considered the lowest level that could be reliably achieved within specified limits of accuracy and precision | | high |
| #P005 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | between 2.1 and 2.5 µg/L | possible candidate for a PQL revision | more recent data would support selecting this PQL range | high |
| #P006 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.042 µg/L | MDL | | high |
| #P007 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.022 µg/L | MDL | | high |
| #P008 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.168 µg/L | minimum quantitation levels | | high |
| #P009 | chemical | reporting | guidance | carbon tetrachloride | drinking water | unknown | 0.088 µg/L | minimum quantitation levels | | high |