|
|
|
|
|
|
|
|
|
|
|
TO: |
Mayor
and Members of Council |
|
|
|
|
FROM: |
Jerry Klaus, General Manager of
Waterworks |
|
|
|
|
PREPARED BY: |
Karen Dennison, P. Eng., Manager
System Engineering |
|
|
|
|
DATE OF MEETING: |
|
|
|
|
|
SUBJECT: |
ANNUAL WATER
QUALITY REPORT |
|
|
|
RECOMMENDATION:
THAT
the Annual Summary Report to Council
as required by Schedule 22 of Ontario Regulation 170/03 enclosed herein be
received.
AND
THAT the Annual Regulatory Report to MOE (Attachment “A”), comprised of Parts I, II
& III-Form 2, III-Form 6 for the Ministry of the Environment on water
supply and quality as required by Section 11 of Ontario Regulation 170/03 be
received.
AND
THAT Council directs staff to post the Annual
Regulatory Report to MOE on the Town’s website and
that it be made available to residents in hard copy version.
To provide to
Council the Annual Summary Report to
Council as required under Ontario Regulation 170/03 Schedule 22. Report
enclosed herein.
To
report to Council on the Annual
Regulatory Report to MOE. This report was submitted to the Ministry of the Environment (MOE) on
To report to
Council on the Customer Waterworks Water
Quality Report as requested by Council.
In order to meet Regulatory
requirements and to strengthen customer confidence in the Town’s water quality
supply, waterworks has prepared several reports as described below.
The Annual Summary Report to Council,
enclosed herein, is intended to inform Council on the failures of the Water
Distribution System in the past year and to provide information on the
capability of the Water Distribution System to meet existing and planned uses
of the System as per Ontario Regulation 170/03. This report is required to be
submitted to Council prior to
The Annual Regulatory Report to MOE
is a technical document submitted in MOE format summarizing the existing water distribution system, results
of tests, corrective actions and any major expenses. The
The Customer Waterworks Water Quality Report
will be structured to be
more user-friendly and highlights water quality as well as waterworks
distribution system initiatives. This report will be prepared and sent as a
report to council for the April 4th General Committee Meeting.
Waterworks is also updating its website in order to better inform
The Annual Summary Report to Council as required by
Therefore for the calendar year
a. A detailed report was sent to the MOE on
b. The Water Distribution System had two
failure areas to report:
i.
Adverse
Sampling Results in the System
ii.
THM
Sampling Timing Adjustment
Adverse Sampling Results in the System:
Adverse Test Results:
Total
Number of Adverse Water Quality Incidents (AWQI) = 34
Breakdown:
Adverse
due to Presence of Bacteria:
Total Coliform Exceedances (24 hours) = 1
Number of Background Colony Exceedances (24
hours) = 1
Heterotrophic Plate Count (HPC) Exceedances
(48 hours) = 7
Adverse due to Deficient Chlorine Residual:
Total Combined Chlorine Residual Deficiency (<0.25
mg/L) = 25
During the period
In 2004 there were 34 adverse water quality incidents
(out of 9405 samples), 9 for the presence of bacteria and 25 for deficient
chlorine residual which did not meet the Ontario’s Drinking Water Systems Regulation
(O. Reg. 170/03) required parameters.
Of
the 9 samples with adverse results for bacteria testing; seven samples exceeded
the limit for Heterotrophic Plate Count (HPC); one tested positive for coliform
and one tested positive for background colony count. The detection of coliform
in water samples is considered to be a general indicator of water quality. The
HPC test is a method of measuring the aerobic bacterial content in water.
Of the 25
samples that had deficient chlorine residual test results, notification was
sent by Waterworks to both the MOH and MOE. The system was then flushed until
acceptable chlorine residual was established and results were recorded. In
2004, Waterworks optimized their dead end flushing program and this is the
reason for the larger number of adverse chorine residual test results.
Waterworks undertook a program in 2004 to determine optimum flushing durations
at each dead end in the distribution system. This was done in order to be able
to calibrate and program the automatic flushing stations planned and budgeted
to be installed throughout 2005 at dead ends. As a result of the optimization
of the flushing program, more testing was done and more adverse results were
reported than normal. We anticipate that the adverse chlorine residual testing
will produce fewer adverse results in the 2005 operation year especially with
the implementation of calibrated automatic flushing stations.
Compliance with Required THM Sampling
Schedules:
REGULATION 170/03 REQUIREMENT:
The Town of
In 2004, the Town’s Waterworks Division
sampled THM on four occasions and noted
RESPONSE (Town):
In order to prevent re-occurrence of this
timing non-compliance, Waterworks has rescheduled THM sampling as follows:
Sampling for THM has been scheduled for the
weeks of March 1st, May 1st, August 1st and
c.
System Information:
Water supplied during 2004:
The Town of
The Town of
The format for
the Annual Regulatory Report to MOE is established by the Ministry of the
Environment and was due
1. A brief description of the drinking water
system.
2. A description of how the Annual Regulatory
Report to MOE has been distributed and where it will be located and made
available to the public.
3. A summary of water quality testing results
for microbiological, inorganic chemical, and organic
chemical parameters.
4. A summary of adverse water quality reports.
5. Identification of the Laboratory Markham is
using for regulation testing.
The Town of
ATTACHMENTS:
Attachment “A”—Annual
Regulatory Report for MOE
|
|
|
|
|
Jerry Klaus, C.E.T., C.M.M. General Manager, Waterworks Division |
|
Peter Loukes, P. Eng. Director,
Operations and Asset Management |
___________________________________
Jim
Sales
Commissioner
of Community and Fire
Services
Q:\Commission
Share\Operations and Asset Management\Reports\2005\Waterworks\Annual Water
Quality Report- March 2005.doc
