Cyanide (free)*

EWG Health Guideline
150 ppb
National Average
2.29 ppb
Detected In
22 utilities

Health Risks

The EWG Health Guideline of 150 ppb for cyanide (free) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to the brain and nervous system.

Filtration Methods

Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes
Activated Carbon
no
Reverse Osmosis
yes
Ion Exchange
yes

Utilities That Detected This Contaminant

Utility Name State Level Detected Status
City of Galena Park TX 280 ppb Exceeds Guideline View
City of Bellaire TX 90 ppb Detected View
City of Waco TX 88.3 ppb Detected View
Harris County MUD 200 Cranbrook TX 75.5 ppb Detected View
Shillington Municipal Authority PA 70 ppb Detected View
Kempner WSC TX 43.8 ppb Detected View
Salado Water Supply Corporation TX 43.8 ppb Detected View
Fort Bend County WCID 2 TX 34.5 ppb Detected View
Reading Area Water Authority PA 14.3 ppb Detected View
Phoenixville Water Dept PA 9.17 ppb Detected View
Pennsylvania American Coatesville PA 6.33 ppb Detected View
Aqua Pa Shenango Valley WTP PA 3.3 ppb Detected View
Belle Vernon Borough Municipal Authority PA 3 ppb Detected View
Municipal Authority of Westmoreland County - Yough Plant PA 3 ppb Detected View
Aqua Pa Bristol PA 1.65 ppb Detected View
Aqua Pa Hatboro PA 1.35 ppb Detected View
Aqua Pennsylvania Main System PA 1.35 ppb Detected View
Aqua Pa West Chester PA 1.12 ppb Detected View
Capital Region Water PA 0.833 ppb Detected View
North Wales Water Authority PA 0.636 ppb Detected View
Warminster Municipal Authority PA 0.636 ppb Detected View
Warrington Twp Water&sew Dept PA 0.636 ppb Detected View