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water services
 The
water supply for the Town of Gander including Gander International Airport
is Gander Lake. Gander Lake is approximately 56km long and 5km wide (35x2
miles), and is one of the deepest lakes in North America, estimated at
305 metres (1000ft) deep. The Municipal Works Department is responsible
for the operation and maintenance of the two pump houses, including the
chemical feed equipment and water quality testing, and the maintenance
of the Water Disinfection System including valves, hydrants, mains and
laterals to the lot line.
The Town of Gander operates and maintains a pump house located halfway
along the north shore of Gander Lake. The intake is a 122cm (48 inch)
pipe which draws water from approximately 5m (16ft) below low water level.
Water is pumped from the lake through a 2,743m (9,000ft) aqueduct to a
6.26 million litre (1.65 million US gallon) reservoir where it is storage
for 18 hours or regular use before it is pumped again into the distribution
system.
The water in the Lake is soft, acidic, low in most metals, and low in
alkalinity. It is high in color and has high organic and inorganic chlorine
demand. The water is treated with gas chlorination, iodine, fluoridation
and lime addition for pH control.
| Characteristic
|
Raw |
Treated |
| ICAS Code |
87/482 |
87/483 |
| pH |
6.5 |
6.8 |
| Conductivity (umho/sm) |
37 |
35 |
| Turbidity (JTU) |
0.4 |
0 |
| Alkalinity (to pH 4.5) as mg CaC03/1) |
5.1 |
3.0 |
| Phosphate as P ug/L
|
8 |
8 |
| Sulfate: (mg/L)
Total
Dissolved |
3.0
3.0
|
2.5
2.5
|
| Nitrate + Nitrate (Nox) mg/L |
0.1 |
0.1 |
| Chloride, as Cl (mg/L) |
3.3 |
10.8 |
| Fluoride (mg/L) |
<0.1 |
1.0 |
| Total organic carbon (mg/L) |
1.5 |
1.6 |
Contact Information:
Town of Gander
Department of Municipal Works & Services
P.O. Box 280
100 Elizabeth Drive
Gander, NL, Canada
A1V 1W6
Tel: 709-651-5915
Fax: 709-256-5809
Please
click here for more information on the Town of Gander’s Water Services
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