Part III Form 2
Section 11. ANNUAL REPORT.
Drinking-Water System Number:
Drinking-Water System Name:
Drinking-Water System Owner:
Drinking-Water System Category:
Period being reported:
220001030
Alexandria Water Treatment Plant
Township of North Glengarry
Large Municipal
January 01, 2011- December 31, 2011
Complete if your Category is Large Municipal
Residential or Small Municipal Residential
Complete for all other Categories.
Does your Drinking-Water System serve
more than 10,000 people? Yes [ ] No [X]
Number of Designated Facilities served:
Is your annual report available to the public
at no charge on a web site on the Internet?
Yes [X]
No [ ]
Did you provide a copy of your annual
report to all Designated Facilities you serve?
Yes [ ] No [ ]
Location where Report required under
O. Reg. 170/03 Schedule 22 will be available
for inspection.
At the Township of North Glengarry
Township Office
90 Main Street
Alexandria, Ontario
K0A 1A0
Number of Interested Authorities you
report to:
Did you provide a copy of your annual
report to all Interested Authorities you
report to for each Designated Facility?
Yes [ ] No [X]
List Drinking-Water Systems, which receive all of their drinking water from your
system:
Town of Alexandria
Did you provide a copy of your annual report to all Drinking-Water System owners
that are connected to you and to whom you provide all of its drinking water?
Yes [ ] No [ ] N/A [X]
Indicate how you notified system users that your annual report is available, and is free of
charge.
[X] Public access/notice via the web
[X] Public access/notice via Government Office
[X] Public access/notice via a newspaper
[ ] Public access/notice via Public Request
[ ] Public access/notice via a Public Library
[ ] Public access/notice via other method _______________________________________
Describe your Drinking-Water System
Raw Water Intake Structure
Is located in Mill Pond approximately 425 m southwest of the water treatment plant comprising
of a vertical 1.5 m diameter, 760 mm high pre-cast concrete pipe placed on a concrete slab
housed in a 2.4 by 2.4 m timber crib including screening. Approximately 425 m of 350 mm
diameter pipe from the intake crib to the low lift chamber well supplies the water treatment
plant with raw water.
Low Lift Chamber / Raw Water Well / Low Lift Pumps
The chamber is 4.7 by 1.5 by 4.0 m low lift chamber / raw water well located in the southwest
corner of the water treatment plant. There are two course screens with an effective opening
size of approximately 6.45 m2, raw water well with powdered activated carbon feeding system
and low lift pump compartments. The low lift pumps consist of two 14.9 kW vertical turbine
low lift pumps located in the low lift chamber / raw water well. Each pump is rated at 6,200
m3/d at 14.6 m total dynamic head (TDH). Each pump is equipped with an automatic flow
control valve on the pump discharge restricting flows to the "Permit to Take Water" (PTTW)
allowances.
Coagulation / Flocculation
There are two 2.6 by 4.6 m concrete flocculating chambers operating in series each equipped
with a 0.37 kW, 5 rpm agitator. Also included in this process is the coagulant and polymer
feeding systems and an in-line mixer.
Sedimentation
There are four concrete sedimentation tanks with overall internal dimensions of 11.7 by 3.6 by
4.9 m operating in parallel. They are gravity fed by a 0.76 by 16 by 1.3 m conduit line which
runs from the flocculation chambers. Each sedimentation tank is baffled with a 4.7 by 2.7 m
wall from the inlet and equipped with tube settlers having a cross sectional area of 3.6 by 6.1 m.
Each tank also has sludge hoppers and drains discharging to the sanitary system.
Filtration
The filtration system consists of four concrete 3.9 by 2.9 by 2.8 m filters with a mixed media
operating in parallel with each having a surface area of 11.3 m2. Each filter is capable of
filtering a maximum flow of approximately 2,003 m2 /d. The filters are complete with surface
wash facilities, turbidity meters, loss of head instrumentation and an under drain system.
An automatic filter back wash system comprises of two pumps (one duty, one standby), one
being rated at 114 L/s, 9.2 m TDH and the other one at 120 L/s, 10.2 m TDH. A supernatant
pipe drains to the sanitary sewer system.
Disinfection
The disinfection system uses chlorine gas which is injected into a header prior to entering the
clearwell. The actual chlorination system consists of three chlorinators each having a capacity
of 22.7 kg/d equipped with two vacuum regulators and 4 chlorine cylinders. A new
chloramination system was commissioned on Dec 20/11
Clear Wells
The clear well is divided into two wells (east and west). These two wells have a smaller cell
within them and are interconnected by valves.
High Lift pumps
Three vertical turbine high lift pumps (the No.2 and No.3 as duty/standby, and the No.1
designated to Clearwell located above the clearwell adjacent to the filters, each pump is rated at
75 L/s at 41m TDH, complete with a flow control valve and instrumentation and controls.
Emergency power
A 175 kW diesel powered generator capable f operating the water treatment plant at full
capacity is housed within the Water Treatment Plant.
Automated Monitoring and Control
An automated control system is capable of monitoring and recording the plant process data
such as flows, chlorine residuals and turbidity. The system is also fully alarmed so that should
any of the required parameters reach near exceedances, an automatic dialer will notify operators
24 hours a day. A new SCADA system was installed in 2011.
List all water treatment chemicals used over this reporting period
Powder activated Carbon
PAX XL6
CIBA LT27 Polymer
Chlorine Gas
Potassium Permanganate
Env 24P10 phosphate
Ammonium Sulphate
Were any significant expenses incurred to?
[ x ] Install required equipment
[ x ] Repair required equipment
[ x ] Replace required equipment
Describe
Install new SCADA to replace existing system. Add chloramination system. Replace all existing
pneumatic valves and controls to electrically actuated valves and controls
Provide details on the notices submitted in accordance with subsection 18(1) of the Safe
Drinking-Water Act or section 16-4 of Schedule 16 of O.Reg.170/03 and reported to Spills
Action Center?
Incident
Date
Parameter
Result
Unit of
Measure
Corrective Action
Corrective
Action Date
August
31
Oct 24
Total Coliform
1
/100ml
Resample
Sept 9/11
THM
Exceedance
108
Ug/L
Flush System
Microbiological testing done under section 8 (2) during this reporting period
Raw
Treated
Distribution
Number
of
Samples
Range of
E.Coli or
Fecal
Results
(#-#)
Range of
Total
Coliform
Results
(#-#)
Number
of HPC
Samples
Range of HPC
Results
(#-#)
52
52
159
0-198
0-0
0-0
0-2380
0-1
0-0
0
52
>500
0-0
0-2
Operational testing done under Schedule 7, 8 or 9 during the period covered by this
Annual Report.
Turbidity
Chlorine
Number
of Grab
Samples
Range of Results
(#-#)
165
188
.07-1.40
.07-2.45
Fluoride (If the
DWS provides
fluoridation)
NOTE: Record the unit of measure if it is not milligrams per liter.
Summary of additional testing and sampling carried out in accordance with the
requirement of an approval or order.
Date of order or C of A
Parameter
Date Sampled
Result
Unit of Measure
Summary of Inorganic parameters tested during this reporting period or most recent
Parameter
Sample Date
Antimony
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
Arsenic
Barium
Boron
Cadmium
Chromium
Lead
Mercury
Selenium
Result Value
< 0.0001
0.0004
0.011
0.017
<0.00002
<0.002
<0.00002
<0.001
Sodium
Uranium
<.00005
Fluoride
Nitrite
Nitrate
Unit of Measure
Exceedance
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
Summary of Organic parameters sampled during this reporting period or most recent
Parameter
Sample
Date
Result
Value
Unit of
Measure
Alachlor
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
<0.3
<3
<0.02
<0.5
<1
<3
<0.005
<0.3
<3
<1
<0.04
<0.5
<0.5
<1
<5
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
Aldicarb
Aldrin + Dieldrin
Atrazine + N-dealkylated metobolites
Azinphos-methyl
Bendiocarb
Benzo(a)pyrene
Bromoxynil
Carbaryl
Carbofuran
Chlordane (Total)
Chlorpyrifos
Cyanazine
Diazinon
Dicamba
Exceedance
July 4th
July 4th
July 4th
July 4th
<0.1
<0.2
<0.1
<0.1
ug/L
ug/L
ug/L
ug/L
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
July 4th
Oct 11th
<0.3
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
July 4th
Terbufos
July 4th
Tetrachloroethylene
July 4th
2,3,4,6-Tetrachlorophenol
July 4th
Triallate
July 4th
Trichloroethylene
July 4th
2,4,6-Trichlorophenol
July 4th
2,4,5-Trichlorophenoxy acetic acid (2,4,5-T) July 4th
<10
<0.3
1,2-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichloroethane
1,1-Dichloroethylene
(vinylidene chloride)
Dichloromethane
2-4 Dichlorophenol
2,4-Dichlorophenoxy acetic acid (2,4-D)
Diclofop-methyl
Dimethoate
Dinoseb
Diquat
Diuron
Glyphosate
Heptachlor + Heptachlor Epoxide
Lindane (Total)
Malathion
Methoxychlor
Metolachlor
Metribuzin
Monochlorobenzene
Paraquat
Parathion
Pentachlorophenol
Phorate
Picloram
Polychlorinated Biphenyls(PCB)
Prometryne
Simazine
THM
(NOTE: show latest quarterly average)
Temephos
<0.1
<5
<1
<0.5
<5
<5
<25
<0.1
<0.1
<5
<0.1
<3
<3
<1
<3
<0.1
<0.3
<5
<0.05
<0.1
<0.5
108.93
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
July 4th
Vinyl Chloride
<0.2
ug/L
List any Inorganic or Organic parameter(s) that exceeded half the standard prescribed in
Schedule 2 of Ontario Drinking Water Quality Standards.
Parameter
Result Value
Unit of Measure
Date of Sample
(Only if category is large municipal residential, small municipal residential, large municipal non residential, small
municipal non residential, large non municipal non residential)
COMPLIANCE STATUS REPORT
SURFACE WATER TREATMENT
Municipality: North Glengarry
Project:
Year:
Water
Source:
Design
Cap:
Alexandria
2011
Mill Pond
1.24 x 106 Igal/day
5640 m3/day
Description: Surface Water Supply with Conventional Water Treatment
Flow
Effluent Physical/Chem
Parameters
THM 4
THM
quarter
Avg. Turb
running
Avg.
Total Flow
Avg
Day
Flow
Max
Day
Flow
m3
m3
m3
NTU
January
39,344
1,269
2,212
0.21
February
35,252
1,306
1,400
March
41,690
1,489
April
41,306
May
Disinfection
Avg.
Cl2
Res
Cl2
Use
mg/l
mg/l
kg
58.54
1.55
130
0.31
1.25
118
1,919
0.24
1.99
166
1,377
1,577
0.20
2.59
105
49,296
1,590
1,965
0.29
1.83
156
June
47,227
1,574
2,024
0.30
1.94
212
July
63,097
2,035
2,635
0.28
1.79
391
August
54,388
1,754
2,648
0.30
2.26
428
September
50,871
1,696
2,218
0.27
1.90
478
October
50,509
1,629
2,582
0.28
1.81
243
November
48,861
1,629
2,173
0.29
1.71
174
December
Average
Total
52,327
1,688
1586
2,752
0.24
.27
1.40
1.84
182
574168
49.4
40.90
141.5
172.5
56.45
77.85
101.08
2784