SLIDE 1
1 October 25, 2018
2 October 25, 2018
Lead Protection Program October 25, 2018 1 Overview 1. Sources of - - PowerPoint PPT Presentation
Lead Protection Program October 25, 2018 1 Overview 1. Sources of - - PowerPoint PPT Presentation
Lead Protection Program October 25, 2018 1 Overview 1. Sources of lead in drinking water at the tap 2. EPCORs current lead control program 3. Upcoming changes in federal drinking water guidelines 4. Changes to lead control program being
SLIDE 2
SLIDE 3
3 October 25, 2018
1. Lead Service Lines 2. Building Plumbing
Sources of Lead at the Tap
SLIDE 4
4 October 25, 2018
Current EPCOR Lead Program - Since 2008
- Annual notification of residents in approx. 5,000 homes (1%)
with LSLs
- Testing for lead at the tap
- Provision of faucet/pitcher filters to remove lead
- Targeted replacements of EPCOR-owned section of the LSL
- > 1,800 replaced in 10 years, mostly partial LSL replacements
(EPCOR-owned section)
- Communication materials and info for customers
- Random daytime (RDT) sampling to assess lead in all homes
across the city based (since in 2015)
SLIDE 5
5 October 25, 2018
Upcoming Federal Lead Guideline
- Health Canada is considering new information on health
effects of lead, especially in young children
- Maximum Acceptable Concentration for lead in drinking
water will be reduced
- 10 ug/L 5 ug/L
- Point of monitoring and compliance will be at the tap
- Expect final release in 2019
- Will impact all water utilities across Canada
SLIDE 6
6 October 25, 2018
What Our Lead Testing Data is Telling Us
Compiled Results from EPCOR’s Random Daytime Sampling Program 2015-2018
- For our random daytime testing program (2015 – 2018), we
collected one-litre water samples directly from kitchen faucets in homes across the city at random times during workdays.
- Samples were collected without any kind of flushing. This
kind of sampling is designed to specifically measure the impact of building plumbing on water at the tap.
- EPCOR proactively collected these samples to determine
how much lead would be contributed to water at the tap from building plumbing.
- The current Health Canada Canadian Drinking Water
Guideline for lead guideline is 0.010 mg/L ,and there is no requirement for this kind of sampling in the current
- guideline. The 0.005 mg/L (or 5 ppb) is the proposed new
- guideline. This kinds of sampling is recommended in the
proposed new Health Canada guideline.
- Based on our random daytime testing, about 50 % of
homes with LSLs and 13% of all other homes will not meet the new lead guideline.
SLIDE 7
7 October 25, 2018
Options EPCOR Is Evaluating to Reduce Lead at the Tap
- Addition of orthophosphate to the Edmonton
drinking water to reduce lead in all homes and from all sources (LSLs, plumbing)
Corrosion Control
- Accelerating LSL removal
- Eliminate partial LSL replacements
- Explore funding of private service line replacements
- Cost split: 70% utility, 30% home owner
Accelerated LSL Removal
- Improved filter program for homes with LSLs as an
interim measure to reduce lead at the tap
Better Filters
SLIDE 8
8 October 25, 2018
Significant Achievements in 2018 YTD
- Pilot-testing of orthophosphate addition
- Evaluation of environmental impacts
- Started conceptual design of dosing system
Corrosion Control
- Industry / jurisdictional review
- Field testing of coordinated LSLs (utility/private)
replacements
Accelerated LSL Removal
- Pilot-testing under-the-counter filters in several
homes with LSLs
Better Filters
SLIDE 9
9 October 25, 2018
Next Steps
- Determine financial cost and rate impact of each of the
three options
- Complete full business case for comprehensive program to
address lead from all sources
- Present business case to City Utility Committee in first half
- f 2019
- Develop a communication plan