Our Public Water Distribution System
Once our drinking water is
processed at our treatment plants it is pumped into our mostly underground pipe
distribution system. I say mostly underground because within our system there
are three elevated water storage tanks commonly referred to as water towers. These
towers are where our water is stored to readily accommodate customer demand. Ideally
in water systems like ours where hydraulic pressure created by elevating the
storage tanks (gravity) eliminates the need for electricity powered pumps to
deliver water under pressure to customers, elevated water towers should be
constructed at as close to the same capacity and elevation as possible. There
are numerous reasons for building water towers like this; of which include
water quality, pressure control and system costs. Unfortunately our water
towers were not built that way.
Our public water supply
system began in the Courthouse area back in the 1950’s. A separate water tower
and public supply system was constructed in the Gloucester Point area in the
early 1970’s. The two systems were connected together and our third water tower
was constructed in the mid 1990’s. Our public water supply system now has a
250,000 gal water tower located in the Courthouse area, a one million gal tower
at the old Page Middle School site and a 250,000 tower at Gloucester Point that
are all connected together and to our water treatment plants. The Courthouse
tower’s full water elevation is 198 feet above sea level, the Page tower was
constructed with a full elevation of 215 feet above sea level and the Point
tower has a full water elevation of 160 feet above sea level. As can be seen,
the Courthouse and Page towers are quite a bit higher in elevation than the
Point tower, with the Page tower, geographically located in between the other
two, being the highest and largest of the three.
I am of the opinion that the
Page water tower was built at the elevation it was to facilitate water
requirements associated with the Gloucester Business Park where Canon and other businesses are located. In
other words; the good ole boy system was working at its finest.
The differences in our water
tower sizes and elevations make it hard to control water quality in the
Courthouse and Point water towers; I’ll explain. Once a water tower is filled,
the supply to the tower is supposed to be turned off until the level of water
in the tank drops to a specified level. Once the specified level is reached the
supply to the tower is turned back on until it is full again. This fill, drop
scenario is commonly referred to as water turnover and is supposed to
occur continuously. This does not happen at the Courthouse and Point towers
because the Page tower is so much larger and higher in elevation that it causes
the other two towers to constantly remain full. When stored water does not get turned
over frequently and regularly, disinfectant byproducts (DBPs) begin to
consolidate.
DBPs are chemical, organic
and inorganic substances that can form during a reaction of a disinfectant with
naturally present organic matter in water. There are too many types of DBPs to
list here but many are suspected of causing damage to the bladder, liver,
kidneys and central nervous system. Some are also considered carcinogenic.
In order to achieve
sufficient water turnover in the Courthouse and Point tower; Utilities
employees must manually lower the water level in each tower by dumping water
from the tanks onto the ground. Unfortunately, it does not appear Utilities has
always been consistent in turning the water over in these towers. I believe our
current Utilities employees do a much better job making sure DBPs do not build
up, but I also know Utilities has sent high level DBP notifications to
customers in the Gloucester Point area within the last year. I am unsure of the
source of the DBPs that drove customer notification in the Point area because
DBPs are known to consolidate in other areas of a water supply system. I do
know the DBPs customers were warned about at the Point are associated with
bladder cancer.
Our system currently has
underground water supply lines that run along Short Lane Road, Guinea Road,
Terrapin Cove Road, Providence Road and other roads, streets and cul-de-sacs in which the waterlines dead end. Dead end
lines such as the ones noted are also areas where DBPs are known to
consolidate. This problem was first brought to my attention during my first
visit to our water treatment plants. The statement made to me was to the effect
of no one being able to guarantee that water high in DBPs was not consumed at T.C. Walker School which is supplied by the Short Lane Road waterline.
It was added that it probably was consumed over a number of years. T.C. Walker
is not our only public school connected to our public water supply system in
this manner, as Achilles Elementary
School is
supplied with water from the end of the dead end Guinea Road waterline. An automatic flushing device was added to
the Short Lane Road waterline about a year ago and Utilities’ current
leadership has implemented a regular flushing and monitoring schedule that should
prevent DBP consolidation in the other dead end lines.
Regularly flushing waterlines
and fire hydrants is part of operating and maintaining a public water supply
system. Like everything else I have talked about in these articles; regular
flushing of our waterlines is something that did not occur for many years due
to mismanagement and neglect. Now we have buildups of sediment in the bottom of
many of our waterlines which causes many customers to end up with cloudy water
in their sink whenever a fire hydrant is opened. Exercising valves and hydrants
is part of any good flushing plan, but again, is something that was neglected
in Gloucester for years. Now we have many valves in our system that
will not close completely when needed. Utilities’ new leaders have made some progress
in this area through reactionary efforts, but there is a lot more that needs to
be done in a proactive and preventive manner.
Some areas of our water
supply system are very old and in need of replacement. Utilities’ is constantly
repairing leaks and replacing components of the system. Unless there is a much
higher priority placed on water quality and accountability, I believe the
repairs will continue and will likely intensify until such time as something
catastrophic happens. I will share more about our water accountability in a
later article.
It will take a rather large
financial investment to bring our public water supply system up to acceptable
standards and performance. We need to correct our water tower issues. We need
to replace our out dated and defective water supply pipes and apparatuses. We
need to adopt and enforce up to date construction standards. And we need to
establish and enforce policies and procedures that will prevent future neglect
and mismanagement of our public water supply system.
In my next article I will
introduce our public sewer system. Environment conscious folks will not want to
miss it.
Comments may be emailed to:
Kennysr61@gmail.com.
Kenny Hogge, Sr.