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2014 Water Quality Report 1 1 0 N I H20 Ak �TgPi i Inside: _ - / The Purpose of this Report.............2 — ► Tigard Water Source Information.....2 / Tigard Water Service Area Map.......2 / Water Quality Analysis Results ...3,4 S l ► Information on Detected Contaminants.................................5 ► Cryptosporidium ............................5 r / Lead...Are You at Risk?..................6 / Definitions................. ....................6 ► TWSA Source Water Assessment....6 / Drinking Water Contaminants..........7 / Immuno-compromised Notice.........7 ► Frequently Asked Questions.............7 / Are you interested in learning . more about your water?.................8 � ► Lake Oswego-Tigard Water Partnership:Community Benefits....8 COVER PHOTO:The new fish-friendly river intake pump station(pictured on the right)—part of the Lake - Oswego-Tigard Water Partnership—will be capable - of delivering up to 38 million gallons of water per day from the Clackamas River to a treatment plant in West 3` Linn.The project is expected to be online in 2016, and will ensure Tigard water customers an ownership _ : share in a safe and economical supply of high-quality drinking water for decades to come.The existing '� r intake pump(pictured left)will be removed. "` ' • LrV S O U R C E I N F 0 R M A T 1 0 N The City of Tigard currently purchases nearly 90 percent of its water from wholesale water providers like the Portland Water Bureau (PWB).The PWB manages the Bull Run Watershed,a surface water supply located in the Mt.Hood National Forest.The watershed encompasses 102 square miles and typically receives 80-170 inches of rainfall per year.PWB switches to its groundwater source (the Columbia South Shore Well Field)in cases of emergency,high demand or compromised water quality.All water obtained from the PWB is unfiltered. WATER SYSTEM INFORMATION Tigard also purchases water from the City of Lake Oswego.Lake Oswego draws its water from the Clackamas River Basin.Encompassing nearly 940 square miles,the basin begins The Pur ose in the Mt.Hood National Forest.Drawn from the Clackamas River,the pumped water moves pthrough a pipeline buried beneath the Willamette River to the Lake Oswego Treatment Plant of this Report located in West Linn. During periods of high water demand,Tigard can supplement its supply with water from The City of Tigard is responsible for city-owned aquifer storage and recovery wells,and a native groundwater well. providing a clean,safe,dependable Future Water Supply supply of drinking water to the 60,000 residents of the Tigard Water The Lake Oswego Tigard Water Partnership will provide reliable,high-quality drinking water to Service Area(TWSA).The service your home or business in 2016.For more information visit:www.lotigardwater.org. area includes the cities of Durham, King City,two-thirds of Tigard and the Tigard Water District.Each TIGARD WATER SER V I C E A R E A entity has representation on the _ T igardwater service Boundary Intergovernmental Water Board (IWB).The board advises the Tigard n Valley Water Districteo�Tua:ati■ �e�ar�'n .-- City Council onwater-related matters. water District n Valley j' Water This report SUmmarlZ2S Tigard'S BEAVERTON ♦••♦♦ Distrix 2014 water quality data. ♦,.•■■"'��• ;`�y �Area� ♦ �� ".,� Mod Additional information provided ��oaa �.♦ '�� is to inform,educate and update Scho\\SFe .•♦ ♦♦♦rr •r —— consumers on water issues affecting oaa �.•' Tigard ♦'. — 3 the community. ,■■■■■N13.,!.•' 9�. ;� Water Have a question about Service _ �"�►VON this report? s Area ■ UNINCORPORATED • ■ WASHINGTON COUNTY ► Contact Environmental Program REPRESENTED TIGARD ■ 2 ■ BY THE TIGARD Coordinator Jennifer Joe at 503-718- WOOD, WATER DISTRICT • 2599 or jennifer@tigard-or.gov. ~■i'.....y Durham Road Beef Bend Voad ti■■■♦■.rll • ► Habla Espanol?Este informe KING CITY • contiene informaci6n importante •.• a V■■: acerca de su agua potable.Haga :�� ♦� .•■'•• :r•'•�■� o que alguien to traduzca para usted, '" ~ TUALATIN •■■■..♦_ o hable con alguien que to entienda. �:•~ 2 1 2014 Water Quality Report • City of Tigard Water Division 2014 Water Quality Analysis Results • - ral standards regulate contaminants in order to protect drinking water quality. Tigard's wholesale water providers test for more than 200 regulated and unregulated contaminants. Contaminant MCL MCLG TWSA Results Violation? Typical Source AM � � LOW *- Range 4 HIGH YES/NO ii 11:4 III WITHI Fecal Coliform 14 A routine sample 0%of samples Not detected NO Human and animal E.coli Bacteria and a repeat with detectable fecal waste sample are total E.coli bacteria coliform positive, -00 and 1 is also E.coli positive Giardia TT required: NA ND One Giardia NO Animal waste Disinfection to cyst in a inactive 99.9% 50 liter of cysts sample Total Coliform Must not detect 0%of samples NO Four of 91 NO Naturally present in Bacteria coliform bacteria with detectable samples in the environment in more than 5% coliform October had of samples per bacteria detectable month coliform (<5%) Turbidity(NTU) Cannot exceed NA 0.19 4.04 NO Erosion of natural 5 NTU more deposits than 2 times in 12 months INORGANICS Arsenic(ppb) 10 0 NO 1.46 NO Barium(ppm) 2 2 0.00072 0.0107 NO Chromium—Total(ppb) 100 100 NO 0.2 NO Found in natural deposits Copper(ppm) NA 1.3 NO 0.00202 NO Fluoride(ppm) 4 4 NO 0.16 NO Nitrate(ppm) 10 10 0.70 1.10 NO Erosion of natural Nitrite(ppm) 1 1 NO 0.11 NO deposits,runoff from fertilizer,leaching from septic tanks and sewage Lead(ppb) NA 0 ND 0.15 NO Found in natural deposits DISINFECTION I Total Chlorine 4 4 0.90 1.50 NO Residual Running Annual Average(ppm) Additive used to Total Chlorine NA NA ND 2.20 NO disinfect water Residual at Any One Site(ppm) 2014 Water Quality Report City of Tigard Water Division 3 2014 Federal Tigard's wholesale water providers test for more than 200 regulated and unregulated contaminants. Contaminant MCL MCLG TWSA Results violation? Typical Source LOW F Range 4 HIGH YES /NO I I 1 1 I I � 1 � ! I Haloacetic Acids 60 NA 27.0 34.0 NO Running Annual Average(ppb) Byproduct of drinking Haloacetic Acids at NA N 17.0 57.0 NO water disinfection Any One Site(ppb) I 1 I III I I qP Total Trihalomethanes 80 27.0 36.0 NO Running Annual Average(ppb) All Byproduct of drinking Total Trihalomethanes NA NA 24.0 54.0 NO water disinfection at Any One Site(ppb) UNREGULATED AND SECONDARY (Regulations provide ai i Radon(pCi/1) No Standard No Standard 100.0 310.00 NO Found in natural aquifer deposits Sodium(ppm) 20 20 6.0 8.0 NO Erosion of natural deposits,water treatment additive Sulfate(ppm) 250 250 1.0 2.9 NO Naturally occurring substance in drinking water UNREGULATED CONTAMINATE MONITORING Chromium(ppb) NA NA 0.23 0.33 NO Hexavalent Chromium- NA NA ND 0.067 NO Naturally occurring Dissolved(ppb) element Strontium(ppb) NA NA 17.0 72.0 NO Vanadium(ppb) NA NA 0.04 19.0 NO Naturally occuring element metal Contaminant 90th Number of Sites Exceeding MCLG Lead and Copper Action Typical Source Percen- the Action Level Rule Exceedance Level file Reached Copper(ppm) 0.34 0 of 114 samples(0%) 1.3 More than 10%of the No exceeded the copper homes tested have levels Corrosion of household action level of 1.3 ppm above 1.3 ppm and commercial Lead(ppb) 14.0 11 of 114 samples(9.6%) 0.0 More than 10%of the No plumbing exceeded the lead action homes tested have levels level of 15 ppb above 15 ppb AL:action level,MCL:maximum contaminant level,MCLG:maximum contaminant level goal,MRDL:maximum residual disinfectant level,MRDLG:maximum residual disinfectant level goal,MDL:method detection limit,NO:non-detected,NA:not applicable,NTUs:nephelometric turbidity units,ppm:parts per million,mg/L:milligrams per liter,ppb:parts per billion,pg/L:mircograms per liter,pCi/I:picocurries per liter,TT:treatment technique.For complete definitions,see page 6. 4 1 2014 Water Quality Report - City of Tigard Water Division Information on Detected Contaminants s r n 2014, Tigard',wholesale water and provide a medium for microbial providers monitored over 200 regulated growth.Large storm events can result in t . and unregulated contaminants, increased turbidity. , - which include pesticides and radioactive contaminants.In addition to these efforts, UNREGULATED CONTAMINANTS .. - Tigard staff concurrently tested the water Water quality standards for unregulated n imam, quality throughout the TWSA distribution contaminants establish guidelines to assist system.If a known health-related public water systems in managing drinking Cryptosporidium contaminant is not listed in this water for aesthetic considerations such as report,it was not detected in the taste,color and odor.These contaminants do drinking water. not present a risk to human health. Federal standards regulate contaminants Radon is a naturally occurring,radioactive Cryptosporidium is a micro- to protect drinking water quality.These gas that cannot be seen,tasted or smelled. organism (protozoan) naturally standards limit the levels of contaminants Radon has been detected at varying levels present in surface water supplies known to occur in water that can adversely in water from Tigard's aquifer storage and throughout the world. Surface water affect public health. recovery wells and native groundwater well. supplies are particularly vulnerable if For more information about radon,call the they receive runoff or pollution from REGULATED CONTAMINANTS EPA's Radon Hotline:800-SOS-RADON or human or animal wastes. Fluoride is a naturally occurring element visit www.epa.gov/radon/rnwaterhtml. Since wildlife inhabits the Bull Run that can dissolve into the groundwater and Clackamas River Watersheds,the Sodium is formed through the erosion of supply.At the levels found in the drinking natural deposits and may be added to water managing agencies regularly monitor water,it is unlikely to contribute to adverse during treatment. for Cryptosporidium.Occasionally health effects. this monitoring detects low levels of Sulfate is formed through the erosion of Cryptosporidium. Chlorine is added to maintain disinfec- natural deposits and at high levels can con- tion requirements throughout the water tribute to a salty taste and/or odor in water. New national standards further distribution system. reduce the risks of illness from UNREGULATED CONTAMINATE Cryptosporidium. Symptoms of Disinfection Byproducts(Haloacetic infection include nausea,abdominal Acids and Total Trihalomethanes)form MONITORING RULE 3 (UCMR3) The purpose of the Environmental Protection cramps and diarrhea. through chemical reactions between chlorine and naturally occurring organic matter Agency's(EPA)Unregulated Contaminant Most healthy individuals are able to in the water.The careful control of the Monitoring Rule(UCMR)is to collect overcome the disease within a disinfection process keeps byproduct levels to nationwide data to help the EPA evaluate the few weeks.However,immuno- a minimum,while maintaining the required occurrence of,and form regulatory decisions compromised people have more levels of chlorine. about,certain unregulated contaminants in difficulty and are at greater risk of drinking water.While there are no estab- developing severe,life threatening Nitrates and Nitrites form through the lished federal guidelines for these substances, illnesses.Immuno-compromised erosion of natural deposits,agricultural states may choose to establish their own individuals are encouraged to consult activity and leaching of septic tanks. guidelines.For example,the state of Califor- their doctor regarding appropriate Total Coliform Bacteria are naturally nia has adopted a state-specific drinking precautions to avoid infection. nt el present in the environment and may indicate chromiumwhich took effect in water standard of 10 ppb for hexavalent Cryptosporidium must be ingested , other potentially harmful bacteria may be for it to cause disease and may be present.Chlorine added to the drinking water To learn about the health effects of con- spread through means other than supply kills these bacteria. taminants, visit:bUp.11public.health. drinking water. Turbidity is a measure of the amount of oregon.gov/HealthyEnvironments/ sediment suspended in the water.This DrinkingWater/Monitoring/ sediment can interfere with disinfection HealthEffects/Pages/index.aspx 2014 Water Quality Report • City of Tigard Water Division I 5 Lead in the Definitions Drinking Water. . . Are You at Risk? Action Level (AL):The concentration of Non-detected (ND):Not detected at or a contaminant,which,if exceeded,triggers above the MDL. treatment or other requirements that a water Not Applicable(NA):Not applicable for system must follow. the specified contaminant. Maximum Contaminant Level (MCL): Nephelometric Turbidity Units The highest level of a contaminant that is (NTUs):Turbidity is a measure of how allowed in drinking water.MCLs are set as clear the water looks.Turbidity can interfere close to the MCLGs as feasible using the best with disinfection and provide a medium for available treatment technology. microbial growth. " - Maximum Contaminant Level Goal Parts per Million (ppm)or Milligrams A (MCLG):The level of contaminant in per Liter(mg/L):A unit measurement drinking water below which there is no describing the level of detected contaminants known or expected risk to health.MCLGs that is one part by weight of analyte to one allow for a margin of safety. million parts by weight of the water sample. �A Maximum Residual Disinfectant One part per million corresponds to one Level (MRDL):The highest level of a penny in$10,000 or approximately one If present,elevated levels of lead disinfectant allowed in drinking water. minute in two years.One part per million is can cause serious health problems, There is convincing evidence that addition equal to 1,000 parts per billion. especially for pregnant women and of a disinfectant is necessary for control of Parts per Billion (ppb)or Mircograms young children.Lead in drinking microbial contaminants. per Liter(Ng/L):A unit measurement water is primarily from materials and Maximum Residual Disinfectant describing the level of detected contaminants components associated with service Level Goal (MRDLG):The level of a that is one part by weight of analyte to one lines and home plumbing.The City drinking water disinfectant below which billion parts by weight of the water sample. of Tigard is responsible for providing there is no known or expected risk of health. One part per billion corresponds to one high-quality drinking water,but MRDLGs do not reflect the benefits of the penny in$10,000,000 or approximately one cannot control the variety of materials use of disinfectants to control microbial minute in 2,000 years. used in plumbing components.When contamination. Picocurries per Liter(pCi/L):A stand- your water has been sitting for several and measurement of radioactivity in water. i hours,you can minimize the potential Method Detection Limit(MDL):The lead exposure n flushing your tap lowest concentration of a substance that can Treatment Technique(TT):A required for for le seconds r 2 minutes before be accurately measured using applicable process intended to reduce the level of a using water for drinking or cooking. testing methods. contaminant in drinking water. If you are concerned about lead in your drinking water,you may wish to request a free lead-in-water test from TWSA SOURCE WATER ASSESSMENT the LeadLine.Information on lead in drinking water,testing methods In 2005,the Oregon Health Authority and the Department of Environmental Quality conducted and steps you can take to minimize a source water assessment for the aquifer storage and recovery wells and the native groundwater exposure is available from the well serving the TWSA.The purpose of the assessment was to identify potential sources of direct LeadLine, 503-988-4000, and indirect contamination in areas surrounding these wells.The assessment identified 50 www.leadline.org or the Safe potential contaminant sources(natural and man-made)that may affect the water quality if Drinking Water Hotline 800-426- managed improperly. 4791,www.epa.gov/safewater/ lead. To view a summary of the assessment, contact Environmental Program Coordinator Jenniferjoe at 503-718-2599 orjennifer@tigard-or.gov. 6 1 2014 Water Quality Report - City of Tigard Water Division What the EPA Says About Q&A Drinking Water Contaminates aboutH 02 In order to ensure that tap water is safe to drink,the Environmental Protec- X01 � tion Agency(EPA)prescribes regulations limiting the amount of certain , i contaminants in water provided by public water systems.Food and Drug 5 Administration regulations establish limits for contaminants in bottled `, Is our water soft or hard. water,which must provide the same protection for public health. FPRO Our Our water is very soft.Most of the year The sources of drinking water(both tap water and bottled water)include rivers,lakes,streams, the hardness ranges from 3-8 parts per ponds,reservoirs,springs and wells.As water travels over the surface of the land or through the million(ppm),or approximately%to%2 ground,it dissolves naturally occurring minerals and,in some cases,radioactive material,and a grain of hardness per gallon.Duringthe summer some customers receive a can pick up substances resulting from the presence of animals or from human activity. blend m groundwater from our aquifer Contaminants expected in untreated water include microbial contaminants such as viruses storage and recovery wells.This water and bacteria,inorganic contaminants such as salts and metals,pesticides and herbicides, has a hardness of approximately 80 ppm organic chemicals from industrial or petroleum use,and radioactive contaminants. (about 5 grains per gallon),which is Because of water's natural cycle,drinking water,including bottled water,may contain small deemed moderately hard. amounts of some contaminants.However,the presence of contaminants does not necessarily What is the pH of the water? indicate that the water poses a health risk.To ensure tap water is safe to drink,the EPA The pH of Tigard's water typically ranges prescribes regulations limiting the amount of certain contaminants in water provided by between 7.4—8.1. public water systems.The EPA establishes test methods and monitoring requirements for contaminants and requires public water systems to give public notice in the event of a violation. What can I do about chlorine Contaminants in drinking water sources may include: taste and odor in my water? ► Microbial contaminants,such as viruses and bacteria,which may come from wildlife or The simplest way to get rid of chlorine septic systems. taste and odor is to place tap water in a container and allow it to sit for a few ► Inorganic contaminants,such as salts and metals,which can occur naturally or result hours.The taste and odor will dissipate. from urban stormwater runoff,industrial or domestic wastewater discharges or farming. ► Pesticides and herbicides,which may come from a variety of sources such as farming, How can Iget my water tested. urban stormwater runoff and home or business use. Contact the LeadLine at www.leadline. ► Organic chemical contaminants,including synthetic and volatile organic chemicals, org or 503-988-4000 for information which are byproducts of industrial processes,and may come from gas stations,urban about free lead-in-water testing.For more stormwater runoff and septic systems. extensive testing,private laboratories can test your tap water for a fee.Not all labs ► Radioactive contaminants,which can occur naturally. are accredited to test for all contami- nants.For information about accredited More information about contaminants and potential health effects is available from the labs,call the Oregon Health Authority, EPA's Safe Drinking Water Hotline at 800-426-4791. Oregon Environmental Laboratory Accreditation Program at 503-693-4122. SPECIAL NOTICE FOR IMMUNO-COMPROMISED PERSONS I'm ahomebrewerand am Some people may be more vulnerable to contaminants in drinking water than the general interested in parameters such as population.Immuno-compromised persons such as persons with cancer undergoing alkalinity, calcium, chloride and chemotherapy'persons who have undergone organ transplants,people with HIV/AIDS or other magnesium in the water. Where immune system disorders,some elderly,and infants can be particularly at risk from infections. can I get this information? These people should seek advice about drinking water from their health-care providers. Unfortunately,these parameters are not Environmental Protection Agency and Centers for Disease Control and Prevention guidelines primary contaminants and the City of on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial Tigard does not test for them. contaminants are available from the Safe Drinking Water Hotline 800-426-4791. 2014 Water Quality Report - City of Tigard Water Division 1 7 Questions? CBenefits TIGARDLake Oswego -Tigard Water Partnership Your Water Bill? 0 shoring water•connecting communities Utility Billing ............ 503-718-2460 Water Quality? Jennifer Joe............ 503-718-2599 jennifer@tigard-or.gov Water Conservation? Jennifer Joe ........... 503-718-2599 - jenniferCtigard-or.gov ' Backflow Prevention? ' # s t xMI Hung Nguyen ...........503-718-2603 hung@tigard-or.gov _ _ 3 � �' a it ; Water Emergencies? Public Works ...........503-718-2591 After-hours Water Emergencies? On-call Service ....... 503-639-15541-7 General Inquiries? ,. Public Works .......... 503-718-2591 Are you interested in learning more about your water? The Intergovernmental Water Board Construction activities at Lake Oswego-Tigard Water Treatment Plant located in West Linn. invites you to attend its monthly meetings,held the second Wednesday he City of Tigard currently purchases the majority of its water from the Portland of each month at 5:30 p.m.in the Water Bureau (PWB).As a wholesale water customer,Tigard has no say in water Tigard Public Works Building Audito- Tquality decisions,little control over the price it pays for water,nor does it have any rium located at 8777 SW Burnham St., guarantee that adequate supplies will be available in the future.Tigard's water contract with Tigard,Oregon. the PWB expires in 2016. Over the last 15 years,Tigard explored many long-term water supply options. In 2008,the city made the decision to partner with Lake Oswego to build a new water system; a system that will meet both communities'future water needs for decades to come. Under the Lake Oswego Tigard Water Partnership,Tigard will share in the ownership and control of the water system.Though costly,the partnership remains the least expensive option to meet future needs and provide water customers with a reliable,high-quality water supply. City of Tigard Construction of several partnership projects is underway.The Tigard City Council is actively PUBLIC WORDS DEPARTiIN'LF_NT involved in monitoring these projects with our Lake Oswego partners. 13125 SW Hall Blvd. Tigard, OR 97223 For more information about thepartnership, visit www.lotigardwaterorg. 8 2014 Water Quality Report • City of Tigard Water Division