| #Q001 | operational | health | recommended | ALARA principle for arsenic | drinking water | Considering that arsenic can have serious effects on health, its concentration in drinking water should always be as low as possible. | | high |
| #Q002 | monitoring | health | recommended | Arsenic well water testing frequency | drinking water | Your water should be tested for arsenic at least once during the period of usage of the well, ideally in the spring or fall. | Applies to usage of a well. | high |
| #Q003 | corrective_action | health | recommended | Alternative water source usage | drinking water | If the concentration of arsenic in your well exceeds 0.010 mg/L, use another source, or bottled water, to: Drink, Prepare beverages, Prepare feeding bottles and baby food, Prepare food, Cook food with water | If the concentration of arsenic in your well exceeds 0.010 mg/L | high |
| #Q004 | operational | health | guidance | Permitted tap water uses during exceedances | drinking water | You can use tap water to: Wash food, Steam food, Wash dishes and clothes, Take a shower or bath | If the concentration of arsenic in your well exceeds 0.010 mg/L | high |
| #Q005 | prohibition | health | guidance | Boiling water warning | drinking water | Boiling water is pointless because arsenic does not evaporate. In fact, doing so can increase the concentration of arsenic in the water. | | high |
| #Q006 | treatment | treatment | guidance | Treatment system installation guidance | drinking water | You can install a residential water treatment system to reduce the concentration of arsenic in water to an acceptable level. | When reducing arsenic concentration. | high |
| #Q007 | treatment | treatment | recommended | Treatment system certification and maintenance | drinking water | Be sure to install a certified system that conforms to NSF/ANSI standards and follow the manufacturer’s maintenance recommendations. | If installing a residential water treatment system. | high |
| #Q008 | monitoring | treatment | mandatory | Treatment system verification testing | drinking water | If you install a residential water treatment system to eliminate barium from your water, you must verify its effectiveness by testing your water every year. | If you install a residential water treatment system (note: text explicitly mentions barium in this arsenic document). | high |