Ontario Pipeline - Summer 2017 - 30

FEATURE | YOUNG PROFESSIONALS

HARMFUL

ALGAE BLOOMS:
MANAGEMENT OF
CYANOTOXINS IN
DRINKING WATER
TREATMENT

BY NICOLE MCLELLAN, M.A.SC., PH.D. CANDIDATE,
ENVIRONMENTAL SCIENTIST, WATER STANTEC
CONSULTING LTD, WATERLOO, ONTARIO

O

Figure 1. Algae bloom formations in
a raw water reservoir in Ontario.

30 | O N T A R I O P I P E L I N E | SUMMER 2017

perators and managers of
drinking water treatment
plants using surface water
sources in Ontario should be
prepared for harmful algae blooms (HABs)
in their water supplies. HABs are made
up of cyanobacteria that can produce
toxins (i.e. cyanotoxins), and they typically form on a seasonal basis in Ontario
between May and November. Conditions
that encourage bloom formation include
nutrient input (e.g. phosphorus and nitrogen), stagnant waters, as well as increased
temperature and sunlight. Winds crossing
a lake can move algae into warm stagnant shores and, if nutrient levels are
elevated and/or tree-coverage is sparse,
cyanobacterial biomass can increase by
1,000-fold overnight.
Not all algae blooms look the same -
they can appear as paint streaks, foamy
mats or grass clippings for example (see
Figure 1). One of the most effective strategies for the monitoring of algae blooms
is through visual observation, which cannot be said for many water contaminants.
Is your water utility prepared to manage
an algae bloom that develops overnight
at the drinking water intake? This article



Table of Contents for the Digital Edition of Ontario Pipeline - Summer 2017

From the Publications Chair
OWWA President’s Message
The OMWA Report
The OWWEA Report
From Our AWWA Director
Niagara Falls Success!
Conference Sponsors
2017 Fuller Award
2017 OWWA Awards
Silver Water Drop
Water Efficiency Awards
OMWA Awards
OMWA Board of Directors and Executive Committee, 2017
Committee Reports
Harmful Algae Blooms: Management of Cyanotoxins in Drinking Water Treatment
OWWEA Member Listing
OWWEA Member News
Index of Advertisers | Ad.com
Ontario Pipeline - Summer 2017 - Intro
Ontario Pipeline - Summer 2017 - bellyband1
Ontario Pipeline - Summer 2017 - bellyband2
Ontario Pipeline - Summer 2017 - cover1
Ontario Pipeline - Summer 2017 - cover2
Ontario Pipeline - Summer 2017 - 3
Ontario Pipeline - Summer 2017 - 4
Ontario Pipeline - Summer 2017 - 5
Ontario Pipeline - Summer 2017 - 6
Ontario Pipeline - Summer 2017 - From the Publications Chair
Ontario Pipeline - Summer 2017 - 8
Ontario Pipeline - Summer 2017 - OWWA President’s Message
Ontario Pipeline - Summer 2017 - The OMWA Report
Ontario Pipeline - Summer 2017 - The OWWEA Report
Ontario Pipeline - Summer 2017 - 12
Ontario Pipeline - Summer 2017 - From Our AWWA Director
Ontario Pipeline - Summer 2017 - Niagara Falls Success!
Ontario Pipeline - Summer 2017 - 15
Ontario Pipeline - Summer 2017 - 16
Ontario Pipeline - Summer 2017 - Conference Sponsors
Ontario Pipeline - Summer 2017 - 2017 Fuller Award
Ontario Pipeline - Summer 2017 - 2017 OWWA Awards
Ontario Pipeline - Summer 2017 - 20
Ontario Pipeline - Summer 2017 - 21
Ontario Pipeline - Summer 2017 - Silver Water Drop
Ontario Pipeline - Summer 2017 - Water Efficiency Awards
Ontario Pipeline - Summer 2017 - OMWA Awards
Ontario Pipeline - Summer 2017 - 25
Ontario Pipeline - Summer 2017 - OMWA Board of Directors and Executive Committee, 2017
Ontario Pipeline - Summer 2017 - Committee Reports
Ontario Pipeline - Summer 2017 - 28
Ontario Pipeline - Summer 2017 - 29
Ontario Pipeline - Summer 2017 - Harmful Algae Blooms: Management of Cyanotoxins in Drinking Water Treatment
Ontario Pipeline - Summer 2017 - 31
Ontario Pipeline - Summer 2017 - 32
Ontario Pipeline - Summer 2017 - OWWEA Member Listing
Ontario Pipeline - Summer 2017 - 34
Ontario Pipeline - Summer 2017 - 35
Ontario Pipeline - Summer 2017 - 36
Ontario Pipeline - Summer 2017 - OWWEA Member News
Ontario Pipeline - Summer 2017 - Index of Advertisers | Ad.com
Ontario Pipeline - Summer 2017 - cover3
Ontario Pipeline - Summer 2017 - cover4
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