Ontario Pipeline - Fall 2018 - 33

DEPARTMENT | CERTIFICATION

Q

CERTIFICATION CORNER
TEST YOUR KNOWLEDGE.

A

BY THE OWWA CERTIFICATION & EDUCATION COMMITTEE

Questions below resemble those appearing on certification exams. Your comments and suggestions are welcome.
If you have specific topics you would like to have included, please send them to waterinfo@owwa.ca. Look for the answers on p. 38.
1. What type of sample should
always be collected for
determining the presence of
coliform bacteria?
a. Time composite sample
b. Grab sample
c. Proportional sample
d. Composite sample
2. A typical coliform colony in the
membrane filter method has the
following characteristics:
a. Blue with lustrous surface sheen
b. Pink to dark red with green
metallic surface sheen
c. Pink or yellow with lustrous
to metallic surface sheen,
depending on species
d. Yellow with silver metallic to
lustrous surface sheen
3. An ion exchange softener is
treating a flow rate of 125 gpm.
What is the operating time
in hours if the softener unit
treats 297,000 gallons before it
requires regeneration?
a. 37 hrs
b. 39.6 hrs
c. 40 hrs
d. 41.1 hrs
4. Which disinfectant would work
best against Cryptosporidium?
a. Ozone
b. Dichloramine
c. Hypochlorite ion
d. Hypochlorous acid
5. When installing a meter, it should
be positioned
for
optimal performance.
a. in a horizontal plane
b. diagonal to the ground
c. away from the house
d. facing downward toward the
ground

6. Sacrificial anodes are also called
a. corrosion anodes
b. corrosion cells
c. galvanic anodes
d. decaying anodes
7. If a municipal residential drinking
water system fluoridates, where
shall the operating authority
ensure that there is a water
sample taken and analysed
for fluoride?
a. At the Point of Entry to the
distribution system.
b. At the end of the fluoridation
process.
c. Anywhere in the distribution
system.
d. At a dead end of a watermain in
the distribution system.
8. A 200mm diameter watermain
with a length of 379 metres has
just been swabbed and flushed
and is ready to be disinfected
using a strong chlorine solution.
The contractor has elected to
use the continuous feed method
of disinfection. Assuming no
losses of solution, how much
12% stock sodium hypochlorite
will be needed to mix with water
to create a sufficient volume of
solution having a free chlorine
concentration of 85 ppm?
a. 8.43 L
b. 33.72 L
c. 84.29 L
d. 2.68 L

9. What is the percent mineral
rejection from a reverse osmosis
plant if the feedwater contains
1,230 mg/L TDS and the product
water contains 135 mg/L TDS?
a. 88%
b. 89%
c. 90%
d. 91%
10. A meter indicates that the water
flow from a hydrant is 2.65 L/s.
How many cubic metres will flow
from the hydrant in 20 minutes?
a. 159 cubic metres
b. 53 cubic metres
c. 3,180 cubic metres
d. 3.2 cubic metres

Engineering
Performance
Solutions

MIB/Geosmin
Analysis
We strive to ultimately
supply vendors,
consulting firms
and utilities with
THE HIGHEST QUALITY OF
WATER POSSIBLE
We provide routine water analyses for
taste and odor, TOC, disinfection byproducts
and other compounds of interest.

3161 St. Johns Bluff Rd. S. Suite 3,
Jacksonville, FL 32246

Call Us:
855-338-7770

Email: info@epslabs.com

www.epslabs.com

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| FALL 2018
| 33
13/11/17
8:04 pm


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Ontario Pipeline - Fall 2018

Table of Contents for the Digital Edition of Ontario Pipeline - Fall 2018

The OWWA Report
The OMWA Report
The OWWEA Report
Ontario Provincial Standards are Made for Life in Ontario
QA/QC for the Operational Lab & Online Equipment
The Perils of Misreading and Misusing Standards
Control & Prevention of Disinfection By-product Formation
The Great Lakes Water Festival
Committee Reports
Certification Corner
OWWEA Member Listing
Index to Advertisers
Ontario Pipeline - Fall 2018 - Intro
Ontario Pipeline - Fall 2018 - bellyband1
Ontario Pipeline - Fall 2018 - bellyband2
Ontario Pipeline - Fall 2018 - cover1
Ontario Pipeline - Fall 2018 - cover2
Ontario Pipeline - Fall 2018 - 3
Ontario Pipeline - Fall 2018 - The OWWA Report
Ontario Pipeline - Fall 2018 - The OMWA Report
Ontario Pipeline - Fall 2018 - The OWWEA Report
Ontario Pipeline - Fall 2018 - 7
Ontario Pipeline - Fall 2018 - Ontario Provincial Standards are Made for Life in Ontario
Ontario Pipeline - Fall 2018 - 9
Ontario Pipeline - Fall 2018 - 10
Ontario Pipeline - Fall 2018 - 11
Ontario Pipeline - Fall 2018 - QA/QC for the Operational Lab & Online Equipment
Ontario Pipeline - Fall 2018 - 13
Ontario Pipeline - Fall 2018 - 14
Ontario Pipeline - Fall 2018 - The Perils of Misreading and Misusing Standards
Ontario Pipeline - Fall 2018 - 16
Ontario Pipeline - Fall 2018 - 17
Ontario Pipeline - Fall 2018 - Control & Prevention of Disinfection By-product Formation
Ontario Pipeline - Fall 2018 - 19
Ontario Pipeline - Fall 2018 - 20
Ontario Pipeline - Fall 2018 - 21
Ontario Pipeline - Fall 2018 - The Great Lakes Water Festival
Ontario Pipeline - Fall 2018 - 23
Ontario Pipeline - Fall 2018 - Committee Reports
Ontario Pipeline - Fall 2018 - 25
Ontario Pipeline - Fall 2018 - 26
Ontario Pipeline - Fall 2018 - 27
Ontario Pipeline - Fall 2018 - 28
Ontario Pipeline - Fall 2018 - 29
Ontario Pipeline - Fall 2018 - 30
Ontario Pipeline - Fall 2018 - 31
Ontario Pipeline - Fall 2018 - 32
Ontario Pipeline - Fall 2018 - Certification Corner
Ontario Pipeline - Fall 2018 - OWWEA Member Listing
Ontario Pipeline - Fall 2018 - 35
Ontario Pipeline - Fall 2018 - 36
Ontario Pipeline - Fall 2018 - 37
Ontario Pipeline - Fall 2018 - Index to Advertisers
Ontario Pipeline - Fall 2018 - cover3
Ontario Pipeline - Fall 2018 - cover4
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