Lead
What is lead?
A natural metal
What is arsenic
A natural metalloid
What is one way adults are cognitively impacted by lead/arsenic?
Memory loss, difficulties concentrating, or mood changes
What is a safe level of lead in tap water?
0!
How can arsenic enter well water?
Natural erosion
What behaviors can lead cause?
Inattentive, hyperactive, or aggressive behaviors
What type of arsenic is more toxic?
Inorganic
What is the impact of brain damage from lead/arsenic on children?
Decreased IQ, learning disabilities, or behavior issues
How does lead enter tap water?
Corrosion
What can have higher levels of natural arsenic?
Soil
What can brain damage from lead cause?
Developmental delays
What disease can arsenic cause?
Cancer
How much more arsenic do children absorb compared to adults?
40-90%
15 ppb
What is a source of inorganic arsenic that can seep into well water?
Paints, pesticides, or preservatives
What is a part of the brain that is impacted by lead?
Prefrontal cortex, hippocampus, or cerebellum
What is a part of the brain that is impacted by arsenic?
Prefrontal cortex or hippocampus
What can symptoms of lead/arsenic exposure in children be mistaken for?
Autism or ADHD
How many parts per billion of lead does Maine allow in drinking water?
4 ppb
How many parts per billion of arsenic does the federal government allow in well water?
10 ppb
How long can lead last in a person's bones?
Decades
What two types of disorders can arsenic lead to?
Neurodevelopmental and mood disorders
How much more lead do children absorb compared to adults?
25-40%
From what year and before are lead pipes more common?
1986
How many wells in Maine surpass the federal arsenic limits?
1 in 10