Water Quality Project Overview

Reducing Taste and Odor and Other Algae-Related Problems for Surface Water Supplies in Arid Environments

(A Cooperative Research and Implementation Program among ASU, SRP, CAP, EPCOR and the Cities of Phoenix, Tempe, Glendale, Chandler and Peoria)

Quick Links

T&O website links

Odour Perception: http://www.leffingwell.com/chirality/methylisoborneol.htm

Connect to Information on Algae Toxins (June 2004 Updated)

Click here to download MS Thesis on Algal Toxins by Michelle Cummings 2002

Click Here to Go to the AWWARF Project Website (#2775) on Ozone-enhanced biofiltration for MIB and Geosmin Removal

Here is a link to a University of Arizona study of the water supply for metro-Phoenix: http://ag.arizona.edu/limnology/watersheds/

Go to top of page

Site Descriptions

Field sampling sites included locations along the CAP and SRP canals and the Verde and Salt Rivers including Bartlett Lake, Saguaro Lake and Lake Pleasant (Table 1, Figure 1). Locations along canals, rivers, and water treatment plants throughout the Valley region were selected as sample sites in order to assess taste and odor problems throughout the entire water collection system. A multi-barrier approach will be taken to address taste and odor problems in drinking water supplies. Sample sites were selected to include locations along the entire water collection system in the Valley; from source water in rivers and lakes to finished water in water treatment plants. Water samples were collected monthly from August 1999 to June 2000 in the CAP, Verde River, Salt River, and SRP sample clusters.

Table 1 – Description of sample sites

site #	site description	Latitude	Longitude
	CAP Canal Cluster
R1	CAP canal above Waddell Canal	N33 46.893	W112 17.174
R2A	Lake Pleasant integrated sample	N33 51.105	W112 16.213
R2B	Lake Pleasant integrated sample	N33 51.105	W112 16.213
R3	Waddell Canal	N33 47.897	W112 15.422
R4	Cap Canal at 7th St.	N33 42.079	W112 03.935
R11	CAP Canal at Cross-connect	N33 30.858	W111 41.603
	Verde River Cluster
R5	Verde River btwn Horseshoe and Bartlett	N33 57.620	W111 42.280
R6A	Bartlett Lake near outlet	N34 00.000	W111 05.625
R6B	Bartlett Lake near outlet	N34 00.000	W111 05.625
R7	Verde River below Bartlett Lake	N33 50.304	W111 38.595
R20	Verde River at Tangle (USGS)
	Salt River Cluster
R8	Salt River inlet to Saguaro Lake	N33 33.349	W111 27.450
R9A	Saguaro Lake near inlet	N33 34.053	W111 32.229
R9B	Saguaro Lake near inlet	N33 34.053	W111 32.229
R10	Salt River below Saguaro (Blue Point Bridge)	N33 33.335	W111 34.436
	SRP Canal Cluster
R12	AZ Canal above CAP Cross-connect	N33 31.022	W111 41.589
R13	AZ Canal below CAP Cross-connect	N33 30.941	W111 42.023
R14	AZ Canal – Inlet to Squaw Peak WTP
R15	Squaw Peak WTP treated water
R16	AZ Canal – Inlet to Deer Valley WTP
R17	Deer Valley WTP treated water
R18	South Canal at Val Vista WTP
R19	Val Vista WTP treated water
R21	AZ Canal at Central
R22	AZ Canal at 56th Street

Figure 1 – Map of Sample Sites

MIB Data

Contour plot for MIB concentration as a function of sampling date and sampling site location

Milt Sommerfeld can be emailed at Milton.Sommerfeld@asu.edu

Larry Baker can be reached at

Baker Environmental Consulting
8001 Greenwood DriveMoundview, MN 55112
763-783-8227
bakerenv@earthlink.net
http://home.earthlink.net/~bakerenv/index.html

Go to top of page