. 2021 Jul 26;50(5):391–403. doi: 10.1111/cdoe.12685

TABLE A1.

Fluoride content of municipal drinking water for 2 major water treatment plants in Calgary and Edmonton, 2005‐2019 ^a . Range (mg/L) and average (if available)

Year	Calgary (F‐cess)^b		Edmonton (F‐cont)
	Bearspaw plant	Glenmore plant	Rossdale plant	EL Smith plant
2005	0.6 to 0.8	0.7 to 0.8	0.7 to 1.0 (avg: 0.8)	0.7 to 0.9 (avg: 0.8)
2006	0.7 to 0.7	0.6 to 0.8	0.8 to 0.9 (avg: 0.8)	0.7 to 0.9 (avg: 0.8)
2007	0.6 to 0.7	0.7 to 0.7	0.5 to 0.9 (avg: 0.7)	0.1 to 0.9 (avg: 0.8)^c
2008	0.7 to 0.7	0.6 to 0.7	0.1 to 0.9^d (avg: 0.8)	0.0 to 0.8^c (avg: 0.4)
			Overall average for both plants: 0.6
2009	0.7 to 0.7	0.6 to 0.8	0.7 to 0.9 (avg: 0.8)	0.7 to 0.8 (avg: 0.7)
2010	0.7 to 0.7	0.6 to 0.9	0.6 to 0.8 (avg: 0.7)	0.7 to 0.8 (avg: 0.7)
2011	0.1 to 0.7^e	0.1 to 0.7^e	0.6 to 0.8 (avg: 0.7)	0.1 to 0.8^f (avg: 0.6)
2012	0.1 to 0.1	0.2 to 0.3	0.0 to 0.8^g (avg: 0.5)	0.6 to 0.8 (avg: 0.7)
2013	0.1 to 0.2	0.1 to 0.3	0.6 to 0.8 (avg: 0.7)	0.6 to 0.8 (avg: 0.7)
2014	0.1 to 0.3 (for both plants)		0.6 to 0.9 (avg: 0.7)	0.5 to 0.9 (avg: 0.7)
2015	0.1 to 0.1 (avg: 0.1)	0.2 to 0.3 (avg: 0.3)	0.6 to 0.8 (avg: 0.7)	0.6 to 0.8 (avg: 0.7)
2016	0.1 to 0.1 (avg: 0.1)	0.2 to 0.3 (avg: 0.2)	0.6 to 0.8 (avg: 0.7)	0.6 to 0.8 (avg: 0.7)
2017	0.1 to 0.2 (avg: 0.1)	<0.1 to 0.3 (avg: 0.2)	0.6 to 0.8 (avg: 0.7)	0.6 to 0.8 (avg: 0.7)
2018	0.1 to 0.2 (avg: 0.1)	0.2 to 0.3 (avg: 0.2)	0.6 to 0.8 (avg: 0.7)	0.5 to 0.8 (avg: 0.7)
2019	0.1 to 0.3 (avg: 0.2)	0.1 to 0.3 (avg: 0.2)	0.6 to 0.8 (avg: 0.7)	<0.1 to 0.8 (avg: 0.5)

^{^a}

The information provided is for treated water entering the distribution system, as recorded in water quality reports for Calgary and Edmonton. The information was not always available in the same format across the 15‐year time period.

^{^b}

Fluoride content of untreated water in Calgary 2005‐2013 range: 0.1 to 0.2 (Bearspaw), 0.2 to 0.3 (Glenmore).

^{^c}

Note: As of September 26, 2007 the fluoride lower limit was relaxed due to chemical supply shortages and construction at the EL Smith plant (approved by Alberta Environment). The shortage was relieved and construction was completed by July 2008 and fluoride levels returned to normal.

^{^d}

No note, but average for Rossdale for 2008 was 0.8 mg/L.

^{^e}

City of Calgary ceased fluoridation of its drinking water on May 19, 2011, as per approval amendment 476‐02‐01.

^{^f}

Note: Fluoride was not added to EL Smith WTP between September 8 and October 21 due to construction work on fluoride system.

^{^g}

Note: Fluoride was not added to Rossdale WTP between July 22 and November 29 due to construction work on fluoride system.