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2018-02-20_Agenda Packet--Dossier de l'ordre du jourCity of Saint John Common Council Special Meeting AGENDA Tuesday, February 20, 2018 7:30 p.m. Council Chamber Please use Chipman Hill entrance S'il vous plait utiliser I'entree Chipman Hill Call to Order Pages 1.1 West Water Update & Copper Scale Stabilizing Treatment Option 1-34 Po eta By: City of Saint John Common Council Meeting Tuesday, February 20, 2018 Committee of the Whole 1. Call to Order Si vous avez besoin des services en fran�ais pour une r6union de Conseil communal, veuillez contacter le bureau du greffier communal au 658-2862. Each of the following items, either in whole or in part, is able to be discussed in private pursuant to the provisions of subsection 10.(2)(4) of the Municipalities Act and Council / Committee will make a decision(s) in that respect in Open Session: 5:00 p.m., 8th Floor Boardroom, City Hall 1.1 Financial Matter 68(1)(c) 1.2 Legal Matter 68(1)(f) 1.3 Legal Matter 68(1)(f) 1.4 Financial Matter 68(1)(c) 2 COUNCIL REPORT M&C No. 2018-50 Report Date February 16, 2018 Meeting Date February 20, 2018 Service Area Saint John Water His Worship Mayor Don Darling and Members of Council SUBJECT. West Water Update & Copper Scale Stabilizing Treatment Option OPEN OR CLOSED SESSION This matter is to be discussed in open session of Common Council. AUTHORIZATION Primary Author Commissioner/Dept. Head City Manager J. Brent McGovern J. Brent McGovern Jeff Trail RECOMMENDATION That Common Council adopt the following resolution: RESOLVED that as a result of the copper pipe leakage review completed to date and based upon the opportunity to stabilize copper pipe scale, your City Manager is recommending that Council direct staff to undertake the following actions: • Over approximately the next month install a temporary orthophosphate treatment system at the South Bay Water Treatment Facility (formerly the Spruce Lake Water Treatment Facility) to assist in stabilizing the existing scale formation on copper pipes. • Report back to Council within approximately 5 months once research is completed and results available. EXECUTIVE SUMMARY Since commissioning of the South Bay Wellfield public health has been protected from waterborne disease. Approximately 3% of Saint John Water's west customer base have reported copper pipe leaks however Saint John Water has not experienced an increase in watermain breaks nor an increase in leaks on City -owned copper water services that supply homes. Continued collection of data in both the laboratory analysis and in field is valuable for fully understanding the pipe leakage matter however there is 1 -2 - sufficient information that suggests there is an opportunity to take action to stabilize the existing scale on copper pipes. Orthophosphates are commonly used in water treatment for copper corrosion or scale stabilization control. The use of them is well established in literature and in practice. The City of Saint John could implement and have operational a temporary orthophosphate system in a period of approximately 1 month at a cost of approximately $46,000. PREVIOUS RESOLUTION n/a STRATEGIC ALIGNMENT This report aligns with Council's Priority for Valued Service Delivery by investing in sustainable City services and municipal infrastructure. REPORT This report is intended to provide an update on actions and work completed over the past three weeks. We take all customer concerns expressed to date very seriously and have remained focused on working with customers on any concerns expressed. The following have remained the three areas of focus. 1. Drinking Water Safety 2. Hardness 3. Copper Pipe Leakage Given the topic of hardness was covered in detail at the January 29, 2018 meeting of Council it will not be repeated below. Drinking Water Safety As noted in greater detail in M&C 2018-31 (January 29, 2018 meeting of Council), since commissioning of the new South Bay Wellfield the water quality has improved significantly over water delivered from Spruce Lake. It is important to reflect upon just a couple of those key water quality parameter changes. Spruce Lake water was low pH, low alkalinity and aggressive very soft surface water while the South Bay Wellfield groundwater is a more neutral pH, high alkalinity, highly buffered groundwater that is hard. These parameters are a couple among the many that continue to confirm an excellent groundwater quality and mineral analysis of the water. 2 -3 - Since commissioning of the South Bay Wellfield, Saint John Water has met the New Brunswick Maximum Acceptable Concentration (MAC), for all parameters listed in the Sampling Plan, an obligation and requirement we have under the Approval to Operate that is issued to the City of Saint John by the Minister of Environment and Local Government. Saint John Water was previously unable to meet its obligation when delivering Spruce Lake Water to customers — therefore, public health is now protected from waterborne disease. Copper Pipe Leaks Since the switch from Spruce Lake water to the South Bay Wellfield groundwater in September 2017, Saint John Water has communicated directly with all west Saint John customers specifically regarding reports of leaking copper pipes and we have collected and logged standardized information relating to each situation. There are approximately 3% of the 5,400 west Saint John Water customer base that have reported copper leaks. Approximately 95% of the reports have been received over the last few weeks. Reports are not localized to any one neighbourhood on the west side and Saint John Water has not experienced an increase in water main breaks nor an increase in leaks of City -owned copper water services that supply water to west side homes. Saint John Water began to study the leaking pipes late last month when the vast majority of customer concerns were received and Saint John Water remains focused on working with industry experts to fully understand the issue. Research and Analyses In total approximately 15 copper pipe samples have been collected from citizens that experienced a leak on the west system and a number of those pipe samples along with water from Spruce Lake and the new South Bay Wellfield have been shipped to the Center for Water Resources Studies at Dalhousie University. The study into the leaking pipes is ongoing and has involved consultation with industry experts from CBCL Limited and Dalhousie University. Work began as quickly as possible so that an accurate scientific understanding of the mechanism of what might be causing the leaks can be determined with confidence. In addition to the work with CBCL and Dalhousie University, Saint John Water has completed residential copper corrosion analyses locally. The comparison looks at copper corrosion when the west side was being delivered with Spruce Lake water and compares it to copper corrosion as it relates to the new South Bay Wellfield water. Results to date of this data show that the water from the South Bay Wellfield relative to the former Spruce Lake Water is much less corrosive, as expected. The theoretical understanding at this point remains the same as communicated at the January 29, 2018 meeting of Council; that with Spruce Lake water, historical piping corrosion was high due to the low pH, unbuffered soft lake ,C] IIS water being corrosive. Plumbing systems prior to the switch were corroded, a phenomenon which happened over a long period of time, and stable copper metal scale had formed, which helped limit leaks and breaks. The change in chemistry when the switch to groundwater was completed disrupted over a period of months the pre-existing copper scale and began a conversion to a new type of scale. When the pre-existing scale was disrupted the already corroded piping systems had no strength left and leaks followed. See the photograph below for a visual example. 1111 pure I West sahlit'101nii1 ( olllulllucu' N111ue 1111 pure 2 West SAut Johiii� (-uulllulllper N111ue ( lose IJlllu While the continued collection of data in both the laboratory analysis and in field is valuable for fully understanding the pipe leakage matter, there is sufficient information that suggests there is an opportunity to take action to stabilize the existing scale on copper pipes that may be weakening with the change in water chemistry. Options Available to Stabilize Scale The tools to reduce the impacts to copper from water are the following: 1. Increase the pH, or 2. Add orthophosphate to the treatment system. Adjusting the pH would not be recommended as the pH is in the desired zone of finished water quality. Also adjusting the pH upwards would have impacts with respect to increasing the scale formation from hard water. Orthophosphates are commonly used in water treatment (in dry or liquid solutions) for copper corrosion or scale stabilization control. The use of them is well established in literature and in practice. To provide examples of just some of the communities in Atlantic Canada that presently use orthophosphates in their drinking water in Nova Scotia they include: Sydney, Antigonish, Bridgewater, Lunenburg, New Waterford, New Glasgow, Windsor, Stellarton and all three treatment facilities in Halifax. In New Brunswick Moncton has been using orthophosphate for many years. It is estimated that 60% of the utilities in the United States use orthophosphates. Il -5 - At the new Loch Lomond Water Treatment Facility that is currently being constructed as part of the Safe, Clean Drinking Water project the original design incorporated orthophosphates due to the higher corrosivity of the surface water (lake water). Extending this treatment to the west side would be consistent with plans already in place for the east side surface water treatment. Orthophosphate will act as an inhibitor to slow the breakdown of scale and stabilize existing pipe materials by forming protective coating of insoluble mineral scale on the inside of service lines and household plumbing. A very small amount can be effective at stabilizing scale formation and Saint John would be operating at a very low dose given the relatively low corrosivity of the current groundwater source. The City of Saint John has the equipment on -hand to implement a temporary orthophosphate system which could be made operational in a period of approximately 1 month while the full study is completed and additional information gathered. The cost to design and implement such a temporary solution would be approximately $46,000 and would include engineering design, mechanical work, electrical work, programming and some piping materials. If the temporary system were to operate for the remainder of 2018 the total cost of orthophosphate would be approximately $90,000. The overall cost of the temporary set-up as well as the chemical costs can be managed within the existing Water and Sewerage operating budget. Health It is important to note that phosphates within orthophosphate are part of a variety of products in we either consume or come in contact with including for example; cola products, cheeses, baking products (for leavening) and in toothpaste. "The Food and Drug Administration (FDA) has issued a report on the toxicology of inorganic phosphates as food ingredients. The FDA considers phosphates as a food additive to be "generally recognized as safe." Also, NSF International maintains recommended maximum dosages of drinking water additives including phosphate products. The typical phosphate levels found in a liter of drinking water are about one hundred times lower than the phosphate levels found in the average American diet. For example, a person would have to drink ten to fifteen liters of water to equal the amount of phosphates in just one can of soda. People concerned about their health and phosphates added as a corrosion inhibitor to the drinking water, should contact their medical care provider." (Ref. United States Environmental Protection Agency - Consumer Concerns Section of USEPA website) 5 -6 - The orthophosphate product being recommended for addition to the west water system is certified by the National Sanitation Foundation (NSF)/ANSI Standard 60, meaning it is approved as a food grade product. Orthophosphate is also supported for use in drinking water by the American Water Works Association (AWWA), a non-profit, for scientific and educational association founded to improve water quality and supply. Communication Over the past three weeks (since the January 29, 2018 meeting of Common Council) the following communication efforts have been undertaken. • New link added to the City's home page and a dedicated west water page has been created www.saintiohn.ca/westsidewater • New Tips and Solutions Guide on hardness prepared and is posted at www.saintiohn.ca/westsidewater • New set of frequently asked questions and answers on the new South Bay well water have been posted at www.saintiohn.ca/westsidewater • Presentation and report delivered to Common Council on January 29, 2018 has been posted at www.saintiohn.ca/westsidewater. As well the link to the Rogers video that shows the delivery of the presentation is also easily accessible for viewing. • News release was issued February 6, 2018 to provide citizens with an update on the work that is underway relating to pipe leakage. • Brochure that will be mailed to all west customers is under development and is scheduled to be mailed in the month of February 2018. • Collaborated on communication of an extension of a loan program by SJ Energy to offer an additional financing option for softener solutions SERVICE AND FINANCIAL OUTCOMES The cost to design and implement such a temporary solution would be approximately $46,000 and would include engineering design, mechanical work, electrical work, programming and some piping materials. If the temporary system were to operate for the remainder of 2018 the total cost of orthophosphate would be approximately $90,000. The overall cost of the temporary set-up as well as the chemical costs can be managed within the existing 2018 Water and Sewerage operating budget. INPUT FROM OTHER SERVICE AREAS AND STAKEHOLDERS Saint John Water continues to work closely with Department of Health and Department of Environment. Below is the input provided by the two regulators. C. Department of Health The statement that follows was issued by the Department Health "The Dept. of Health recently discussed the addition of Orthophosphates to the West Saint John drinking water system for its anti -corrosive properties. From a Public Health perspective we see no apparent health issues with the use of this chemical compound as an anti -corrosive to assist with reducing residential plumbing leaks / breaks. Also this product is certified for NSF 60 and numerous other Canadian cities are using this some product. Therefore after several discussions and the review of the attached Data sheet, the NB Dept. of Health has no objections to use of Orthophosphates being added to the West side drinking water supplies." Department of Environment and Local Government The City will require written consent from the Minister of the Environment and Local Government as stipulated by Section 21 of the Water Quality Regulation — Clean Environment Act. Written consent from the Minister is expected once Council has considered as Department officials have advised they see no issues. Moncton's Input "Our raw surface water supply from Turtle Creek has naturally low ph, alkalinity and hardness and with a Langelier Index around -3 it is considered very corrosive to metallic pipes in. In order to counter this, the Moncton WTP adjusts the ph to around 7.3 and adds a poly/orthophosphate product to the finished water as a corrosion and scale inhibitor. Poly/orthophosphate application over time will establish a microscopic film on the pipes thus reducing the rate of metallic corrosion. We have monitored the results using corrosion coupon racks and with the phosphate addition our water is now rated as mildly corrosive. Other benefits from the phosphate addition are fewer water discolouration events, reduced chlorine demand and higher chlorine residual throughout the distribution system. The product used is approved by the American Water Works Assoc. (AWWA) and the National Sanitation Federation (NSF) for use in drinking water. To date we have not had any customer complaints related to the use of the product and we believe it has been effective in reducing water quality complaints." ATTACHMENTS • Tips and Solutions Guide hardness • Frequently asked questions and answers • News release issued February 6, 2018 7 o (10MtS 011171 Fl- S is treated for safe consumption and meets the high level of quality legislated by Health Canad7a al the New Brunswick Department of Health. While we can celebrate that the health of our customers, is protected, we also know that not all water is created equal. Like many water sources across Canada, our new water is hard. and water does not pose a health concern but the transition from soft surface water brings about a new normal for customers. T'his information �quide has been developed to provide customeirs with Ups and solutions to deal with hard water. 'What is Hard Water? Hard Water is water, with a high mineral content, mainly calcium and magnesium. Water hardness is detected through testing, and a few telltale signs can tell you water is hard: it can leave soap scum on sinks and, bath tubs, mineral deposits on hard surfaces, and can form scale buildup in washing machines, dishwashers -t,, pffee makers, kettles, irons, humidifiers, wate and plumbing fixtures, Without proper and r he e ici ip U'lar maintegg,", lia yp -u decrease over time due to the mineral or scae',,66j) ynaorir r /�� r //���j / 1 %/r — TV Why is West Slide Walter Hard? T, comes from aquifers deep beilow the M�� As the water travels up through the ground at the wellfield, it is, filtered through sedimentary rock and calcium -bearing minerals, Any hardness the water has naturally occurs during this stage. Water hardness, from the three wells is tested on a regular, ongoing basis and has an average level I of 200mg/L.. Hardness is not a stagnant number and can fluctuate as water passes through the aquifer. This level is 2.5 times below what Health Canada says requires treatment. HELPFUL TIPS FOR DEALING WITH PIARD WATER Vinegar is suggested often because the calcium in hard water is highly reactive with such acids. * Leave a squeegee in the shower to clean walls and shower door after use. * Remove hard water deposits from glass and plumbing fixtures by using vinegar and a soft cloth. * Fill a plastic bag with vinegar, attach it to the shower head with a rubber band and let soak overnight, * Place small fixtures in a bowl of hot vinegar for an hour. * Use, a cup of vinegar or lemon juice in place of regular laundry/dish detergent and run an empty load for a full cycle. Liquid detergent pods can eliminate white residue. * Fill the coffee pot and kettle a quarter full with vinegar or lemon jul,ice and leave for an hour. Then top up with water and boil. Rinse well to avoid leaving a, sour taste behind! * For irons, run vinegar through them or use distilled water-. * For bathroom cleaning, laundry or kitchen appliances use detergents that include phrases like works in hard water" on the label. Liquid laundry detergents often contain a softener for clothes. • Always consult manufacturer's recomq�enclations for appliances. hqd watff • Choose a hair care product that 1blerance levels for water hardness vary among consumers and treatment of hard water is a matter of personal preference. Scarne households may chooseto install a water softener. Water softeners work by pumping water through a tank containing resin (or salt), which causes calcium and magnesium ions to be exchanged for sodium or potassium ions. Things to consider: * Water softeners increase the sodium concentration in water, The Guidelines for Canadian Drinking Water Quality recommend you keep a separate, non -softened water supply for drinking and cooking. * Ensure that the water softener is NSF certified to meet national health and safety standards. * Always maintain the system according to the manufacturer's instructions. The price for water softeners varies frorn a lease -to -own cost of $23/month, a purchase price of $499i or a contractor purchase and install price of $2,000. *For a permit to install a water, softener, please contact the One -Stop -Development Shop at 658-2�91 1. For questions, con -tact Saint John Water @ 658-4455 or emiall waterandsewerage0a saintjohn.ca. The best time to call Is 8:30 a.m. to 4:30 p.m., Monday to Friday. A In September 2017, Saint John Water switched the West side drinking water system from lake water from Spruce Lake to ground; water drawn from the South Bay Welffidd. This switch was part of the City of Saint John, Safe, Clean Drinking Water Project to ensure the sustainable and reliable supply Previous to this transition, the, water from Spruce Lake posed a risk to public health as the City was unable, to assure its safety at all times. The lake water did not meet Health Canada's Water Quality Guidelines or the Provincial Department of Health drinking water requirements. Saint John Water must meet specific water quality requirements. Furthermore, the surface water at Spruce Lake was susceptible to viruses and protozoa contamination, which Saint John Water was not able to treat KIs the wa,ter s,afe for drinking? A Yes, the, water provided to west Saint John homes is safe to, drank. From a health perspective, it is the best water the west side of the City has ever had. Saint John Water samples the water for quality on a regular, ongoing basis from locations all across the City, including numerous areas on the west sidem This sampling assures that the water remains safe at all times. Since the transition from lake water to well water in September 2017, S 'jdhn Water has increased the number of'sampJes it takes of the well water to provide ongoing Guidelines. QHow were residents notified, of tE AO�Oint John Water places great vAue on public with regular updates on the success of the project and key decisions. Efforts are made to reach customers directly through open houses, regular updates to Common Council, direct mail, website and social: media messages, and media interview and reports. These notifications will continue. In terms of the transition from very soft surface (lake) water to hard well water, it has been explained be harder than the, water from Spruce Lake. There is a good description of the difference between hard and soft water on theCity's website as well as tips, on how to deal with hard water. In terms of leaking or burst pipes, this can occur for a number of reasons that are unrelated to ha water itself, and during any time of the year. It was not anticipated that the change in water froil m soft to hard would cause any issues to internal pipling�. Saint John Water has heard concerns fro may have on this phenomeinon, Customers who have experienced leaking pipes can contact Saint John Water to advise us of the issue by calling Customer Service at 658-4455, The best time to call is between 8:30 a.m. and 4:30 p.m., Monday to Friday. Emails can, also be sent to waterandsewerage@sainqohin.ca I Does Saint John Water fix plumbing on private property or pay bills related to such work.? Saint John Water is responsible to investigate and repair any leaks on or issues on the public water main up; to the point where it meets the residential or commercial property line, Anything on private property is considered to be under the ownership and responsibility of the property owner, Currently there are no plans to provide discounts for work on private property, VAII the City of Saint John be installing a water, softener at the sourcei? 'There are currently no plans to install a water softener at the South Bay Wellf iield as the water is 01 good quality and meets the Canadian Drinking Water Quality Guidelines as welil as the New Bruinswi drinking water guidelines, Saint John Water has developed an information, guide to assist with U Is the water pressure higher in the distribution system now that we are on well water? Saint John Water monitors water pressure throughout the distribution; system on a regular, ongoing basis, It is, common to have small fluctuations in the system due to the varying levels of water in the three water storage tanks that serve west side customers. 'The water pressure has not increased since the transition to the new water from the South Bay Wellfield. System disruptions can occur across the Cit, I y, whiich could increase or decrease water pressure. These instances only occur for a short period of time. If you feel as tha change to your water pressure, please contact What is the new water chemistry (pH)? There are, many parameters involved with water chemistry, and not all waters are created equial. With the transition from lake water to w0water, the pH in! the City's west side water supply has risen from 6.,2 (Spruce Lake water level) to 7.9 (South Bay Wellfield water level). This is good news — the water is less acidic. Hardness, which is the concentration of rnagnesiurn and calcium in the water, fluctuates at an average of approximately 200mg/L. Hardness is not a constant number as the water quality changes depending upon how the ground water' moves through the underground aquifer because as it is moving through it is picking up minerals. It is normal to see variations Saint John Water is working with external experts to better understand why some west sid... Page I of I &_ SAINT JOHN Saint .7ohn rotator is worldil %with exteirnalcmpeiftsi to bet!tell' UnderS -id w ly re we t ta iii �'11 so nri S side customiers have experienced lelal<ing copper Ipipes 06 -Feb -2018 To date, and since the commissioning of the South Bay Welifield, Saint John Water has received 107 reports of leaking pipes from customers serviced with the new ground water source. Most of the report!; have been received over the last two weeks, and are isolated to concerns about copper pipes on private property that had occurred during the last four and a half months. Reports are net localized to any one neighbourhood alone, and there has not been an increase in water main breaks or leaks to City -owned infrastructure on the same distribution system, Saint John Water began an investigation into the leaking pipes on private property late last month when the vast majority of reiated customer concerns were received. To date, Saint John Water has heard from 2 Per cent of the 5,400 customers served on the west side. "We take all calls from our custQrners very seriously and we understand the frustration and expense leaking pipes can cause," said Sairt John Water Commissioner Brent McGovern, "We are working with water experts from CBCL Limited and Dalhousie University to complete a copper pipe failure analysis as quickly as possible so that we can better understand what might be causing the leaks," To conduct the analysis, sections of leaking copper pipes from some customer homes have been collected and sent along with wace. samples to Dalhousle University, Initial results of the analysis are expected to be available within the next one to two months. In the meantime, Saint John Water is also completing re5ici testing locally to explore v,,hether or, not anti -corrosion options could be useful. More Information will be provided to the public as It is available. Additional questions about the new ground crater source have been addressed since its commissioning in September 201.7, most of v4hicid relate to the hardness of the water. Information about water hardness and the Safety Of the drinking water can be found an the City's website at /dww,sDhsqjohrri czjlv�jestsldewatei . Overall, there are three distinct considerations about the water on the west side. One is the hardness of the water and customers' linclivicial preferences and as It relates to that; another Is the safety of the water, which now rneeih5 all Federally- and Provinclaily-regulated parameters; and the third is the phenomenon of the leaking copper pipes, which is being studied for a potential cause, "While we are confident in the high-quality, safe drinking water west side residents now have, and working hard to inform customers about hard water, the issue of the leaking pipes is complex and needs further analysis," adds McGovern McGovern encourages customers with leaking pipes to contact Saint John Water directly if they have riot already done so. "In response to the peaking pipe phenomenon, we are asking any of our west side custorners who have experienced this since September 2017, and have net already reached out to our customer, service, to call 658-4455 or ennaill sairitjohin ca," said McGovern "All concerns are being addressed indivici and logged," Media Inquiries Corporate CcrnrrrLmications City of Saint John 11th floor, City Hall (506) 649 6008 saintjohn.ca <7) 2015 City of Saint John Siter-rap R privacy I Disclaimer I Language 14 http://,aww.saintiolin.ca/en/home/news/ne,A,sreleases/saint-johii-water-is-working-with-ex... 07/02/2018 I I A� i 11, 11 E s , , , , , , , 0 L� 0 C�7 L ;. Iz- fA Co CL L J ;. fA CN LO CN Co co J 'Al cn OF fo elfcn 0 CD cn o C�7 cn 'Al 00 km c C. 0 n I 4- 0 cm cm 4-a 0 E 0 4-j 4— U) 4-j 4-j 7a-) cm 0 0 4-a U) U) U) 0 70 = C: ca - 0 n I M I/ e 1 • •' 1 t, i • .... 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