Water Samples

(click on any image to enlarge)

 

Things are getting better around here ...
Things are getting better around here …

 

 

AREA has taken spot check water samples at various locations in Lake Victoria since 2001. One location was close to a sanitary sewer manhole on the north shore just west of the William Hutt Bridge. Samples were also taken at the trestle bridge at the extreme east end of the lake and at the Festival bridge.

Samples were taken at the surface and three feet below the surface of the water.

 

Cygnets enjoy the cleaner water ...
Cygnets enjoy the cleaner water …

 

 

These samples are too few to give a definitive scientific result, an average of many samples over an extended period is needed. Taking many samples is too costly; however, the samples we do take does provide a reasonable indication.

The most striking change occurred by the sanitary manhole: the number of e-coli per 100ml dropped from 6400 in October 2001 to 60 in July 2011. This happened because the sewer was abandoned and is no longer in use.  Friends of the Avon River are grateful for the closing of the sewer.

 

Bulrushes quietly cleaning the water ...
Bulrushes quietly cleaning the water …

 

 

The row in the table below represent the date of sampling, the columns represent the location of the sample. The numbers indicate the number of coliforms per 100 ml.

The Provincial e-coli guideline for acceptable water quality is 200 coliforms per 100ml.

 

DATE Rail Road
Bridge
3 ft under
Rail Road
Bridge
surface
Festival Bridge
3 ft under
Festival Bridge
surface
W Hutt Bridge
3 ft under
W Hutt Bridge
surface
AUG 2015 600 628 610 392 152 252
JULY 2015 356 428 320 540 not taken not taken
OCT 2014 147 260 250 210 1900 1190
SEPT 2012 1200 1060 1370 1310 410 270
JUNE 2012 600 360 340 184 108 40
JULY 2011 760 250 190 130  not taken 10
SEPT 2010 710 460 500 350 120 not taken
SEPT 2009 680 840 680 750 370 not taken
JULY 2009 220 50 100 70
NOV2008 380 350
OCT 2008 1400 700

 “Measurements show coliforms per 100 ml”

Acceptable water quality is 200 coliforms per 100ml.

 NOTE:  We no longer take readings at the abandoned William St. Sanitary Sewer
Initial reading in 2001 was 6400 and final reading taken in July 2011 was 60.

 

Avon River swimmers ... Photos courtesy of Stratford-Perth Archives and with permission of the Beacon Herald
Avon River swimmers … Photos courtesy of Stratford-Perth Archives and with permission of the Beacon Herald

 

 

The water samples were analyzed by GAP EnviroMicrobial Services of London Ontario.

AREA will continue to monitor the water quality in Lake Victoria.

 

 

 

 

Avon River swimmers ...
Avon River swimmers …

 

 

In what now seems like the distant past, people actually swam in Lake Victoria waters of their own free will; an action totally unthinkable today. AREA is not claiming that it can make the lake swimmable again. It is claiming that by planting aquatic vegetation that absorbs pollutants to grow, the water quality will be improved.

One can do more than just dream.

Please do not feed waterfowl in or around the Avon River.  Population levels have increased at an alarming rate over the last 10 years.  Additional excrement only adds to the problem of not achieving a cleaner river.  Read the following two signs.
Thank you!

 Did You KnowDO NOT FEED WATERFOWL

 

 

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