2016 Annual Drinking Water Quality Report

10 20 1 6 Annual Drinking Water Quality Report Johnston County Public Utilities PWS # 40 - 51 - 018 EAST PWS # 03 - 51 - 070 WEST ___________________________________________________________________________________________________________________________________________ We are pleased to present to you this year’s Annual Drinking Water Quality Report This report is a snapshot of last year’s water quality Included are details about from where your water comes , what it contains , and how it compares to standards set by regulatory agencies Our constant goal is to provide you with a safe and dependable supply of drinking water We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources We are committed to ensuring the quality of your water and to providing you with this information Éste informe contiene información muy importante sobre la calidad de su agua potable Una copia de este reporte en español está disponible en la Oficina de Servicio Público en el Centro de Land Use The Johnston County water system has two service areas called Johnston East and Johnston West The Johnston East service area is generally described as the area east of the Neuse River and south of I - 95 The Johnston West service area is the area west of the Neuse River and north of I - 95 Please refer to the map Water supplied to the Johnston East service has free chlorine as a secondary disinfectant since April 2011 Water supplied to the Johnston West service area has chloramines a combination of chlorine and ammonia as a secondary disinfectant The quality data for both service areas are provided to all customers We provide service for communities , towns and cities throughout our county including most unincorporated parts of the county and the towns of Archer Lodge , Four Oaks , Princeton , Kenly , Clayton , and Wilson’s Mills The County system also supplements the towns of Micro , Benson , Pine Level , Smithfield , Selma , and Fuquay Varina with additional water In 2016 our water department produced and provided approximately 27 billion gallons of water to our customers Our water source is surface water from the Neuse River , which forms just above Durham where the Eno and Flat Rivers converge The Neuse River flows approximately 190 miles through eastern North Carolina to the Pamlico Sound Our intake and treatment facility are located one half mile east of Wilson’s Mills , NC There are two reservoirs on site Each reservoir contains 35 million gallons The treatment system has five main steps to remove or reduce harmful contaminants presedimentation , coagulation , clarification , filtration by multimedia high rate filters , and disinfection Once treatment is complete , water is pumped into elevated storage tanks for distribution throughout the water system Johnston County also purchases water from the Town of Smithfield and Harnett County on a bulk basis The source of the Smithfield supply is the Neuse River and Harnett County supply is the Cape Fear River The treatment processes are similar to the county’s Water purchased from Smithfield and Harnett County mixes with water produced by the county in the distribution system The US Environmental Protection Agency EPA wants you to Know Drinking water , including bottled water , may reasonably be expected to contain at least small amounts of some contaminants The presence of contaminants does not necessarily indicate that water poses a health risk More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agencys EPA Safe Drinking Water Hotline 800 - 426 - 4791 The sources of drinking water both tap water and bottled water include rivers , lakes , streams , ponds , reservoirs , springs , and wells As water travels over the surface of the land or through the ground , it dissolves naturally occurring minerals and , in some cases , radioactive material , and can pick up substances resulting from the presence of animals or from human activity Contaminants that may be present in source water include microbial contaminants , such as viruses and bacteria that may come from sewage treatment plants , septic systems , agricultural livestock operations , and wildlife ; inorganic contaminants , such as salts and metals , which can be naturally occurring or result from urban storm water runoff , industrial , or domestic wastewater discharges , oil and gas production , mining , or farming ; pesticides and herbicides , which may come from a variety of sources such as agriculture , urban storm water runoff , and residential uses ; organic chemical contaminants , including synthetic and volatile organic chemicals , which are by - products of industrial processes and petroleum production , and can also come from gas stations , urban storm water runoff , and septic systems ; and radioactive contaminants , which can be naturally occurring or be the result of oil and gas production and mining activities In order to ensure that tap water is safe to drink , EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health Some people may be more vulnerable to contaminants in drinking water than the general population Immuno - compromised persons such as persons with cancer undergoing chemotherapy , persons who have undergone organ transplants , people with HIV AIDS or other immune system disorders , some elderly , and infants can be particularly at risk from infections These people should seek advice about drinking water from their health care providers EPA CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Water Drinking Hotline 800 - 426 - 4791 If present , elevated levels of lead can cause serious health problems , especially for pregnant women and young children Lead in drinking water is primarily from materials and components associated with service lines and home plumbing Johnston County Public Utilities is responsible for providing high quality drinking water , but cannot control the variety of materials used in plumbing components When your water has been sitting for several hours , you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking If you are concerned about lead in your water , you may wish to have your water tested Information on lead in drinking water , testing methods , and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http wwwepagov safewater lead The North Carolina Department of Environment and Natural Resources DENR , Public Water Supply PWS Section , Source Water Assessment Program SWAP conducted assessments for all drinking water sources across North Carolina The purpose of the assessments was to determine the susceptibility of each drinking water source well or surface water intake to Potential Contaminant Sources PCSs The results of the assessments are available in SWAP Assessment Reports that include maps , background information and a relative susceptibility rating of Higher , Moderate or Lower The relative susceptibility rating of the source for Johnston County Public Utilities was determined by combining the contaminant rating number and location of PCSs within watershed and the inherent vulnerability rating ie , characteristics or existing conditions of the watershed and its delineated assessment area It is important to understand that a susceptibility rating of “ higher ” does not imply poor water quality , only the systems ’ potential to become contaminated by PCS’s in the assessment area The assessment findings are summarized in the table below Susceptibility of Sources to Potential Contaminant Sources PCSs Source Name Susceptibility Rating SWAP Report Date Neuse River Higher Ju ly 2015PageThe complete SWAP Assessment report for Johnston County Public Utilities may be viewed on the Web at http wwwncwaterorg pws swap Note that because SWAP results and reports are periodically updated by the PWS Section , the results available on this web site may differ from the results that were available at the time this CCR was prepared If you are unable to access your SWAP report on the web , you may mail a written request for a printed copy to Source Water Assessment Program – Report Request , 1634 Mail Service Center , Raleigh NC 27699 - 1634 , or email request to swap @ ncdenrgov Please indicate the system name of Johnston County , PWS # 03 - 51 - 070 , and provide your name , mailing address and phone number If you have any questions about the SWAP report please contact the Source Water Assessment staff by phone at 919 - 707 - 9098 It is important to understand that a susceptibility rating of “ higher ” does not imply poor water quality , only the systems ’ potential to become contaminated by PCS’s in the assessment area If you have any questions about this report or concerning your water utility , please contact Chandra Coats , PE , Director of Utilities and Engineering , by calling 919 209 - 8333 or by writing to this address Johnston County Utility Dept PO Box 2263 , Smithfield , North Carolina 27577 We want our valued customers to be informed about their water utility You can attend Board of Commissioners meetings on the first Monday of each month , at 10 00 am , in the Johnston County Courthouse , at 212 Market Street , Smithfield , NC Find out more on the Internet at wwwjcutilcom Definitions AL – Action Level – The concentration of a contaminant which , if exceeded , triggers treatment or other requirements which a water system must follow MCL – Maximum Contaminant Level – The highest level of a contaminant that is allowed in drinking water MCLs are set as close to the MCLGs as feasible using the best available treatment technology MCLG – Maximum Contaminant Level Goal – The level of a contaminant in drinking water below which there is no known or expected risk to health MCLGs allow for a margin of safety MRDLG - Maximum Residual Disinfection Level Goal – The level of a drinking water disinfectant below which there is no known or expected risk to health MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants MRDL - Maximum Residual Disinfection Level – The highest level of a disinfectant allowed in drinking water There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants 90 th Percentile – 90 of samples are equal to or less than the number in the chart ND – Non - Detects – Laboratory analysis indicates that the contaminant is not present at the level of detection set for the particular methodology used NTU – Nephelometric Turbidity Units – A measure of the clarity of water Turbidity in excess of 5 NTU is just noticeable to the average person N A – Not - applicable – Information not applicable not required for that particular water system or for that particular rule Picocuries per liter pCi L – Picocuries per liter is a measure of the radioactivity in the water ppb – parts per billion – micrograms per liter ug l – One part per billion corresponds to one minute in 2,000 years , or a single penny in 10,000,000 ppm – parts per million – milligrams per liter mg l – One part per million corresponds to one minute in two years or a single penny in 10,000 RAA – Running annual average TT – Treatment Technique – A treatment technique is a required process intended to reduce the level of a contaminant in drinking water LRAA – Locational Running Annual Average LRAA – The average of sample analytical results for samples taken at a particular monitoring location during the previous four calendar quarters under the Stage 2 Disinfectants and Disinfection Byproducts Rule Level 1 Assessment - A Level 1 assessment is a study of the water system to identify potential problems and determine if possible why total coliform bacteria have been found in our water system Level 2 Assessment - A Level 2 assessment is a very detailed study of the water system to identify potential problems and determine if possible why an E coli MCL violation has occurred and or why total coliform bacteria have been found in our water system on multiple occasions We routinely monitor for over 150 contaminants in your drinking water according to Federal and State laws The tables below list all the drinking water contaminants that we detected in the last round of sampling for each particular contaminant group The presence of contaminants does not necessarily indicate that water poses a health risk Unless otherwise noted , the data presented in this table is from analyses completed from January 1 through December 31 , 2016 The EPA and the State allow us to monitor for certain contaminants less than once per year because the concentrations of these contaminants are not expected to vary significantly from year to year Some of the data , though representative of the water quality , is more than one year old Water Quality Data Table s Johnston County WEST PWS # 03 - 51 - 070 Disinfectant Residuals Summary Contaminant units Year Sampled MRDL Violation Y N Your Water highest RAA Range Low High MRDLG MRDL Likely Source of Contamination Chlorine ppm 2016 N 062 00 – 33 4 40 Water additive used to control microbes Chlora mines ppm 2016 N 271 00 – 398 4 40 Water additive used to control microbes Stage 2 Disinfection Byproduct Compliance – Based on Locational Running Annual Average LRAA Disinfection Byproduct Units MCLG MCL Your Water highest LRAA Range Low High Year Sampled MCL Violation Yes No Likely Source of Contamination HAA5 ppb N A 60 42 2016 No Byproduct of drinking water disinfection JCW - MAX2 13 – 52 JCW - MAX3 11 – 20 JCW - MAX1 32 – 4 6 DS - 3 28 – 59 TTHM ppb N A 80 57 2016 No Byproduct of drinking water chlorination JCW - MAX2 17 - 7 7 JCW - MAX3 18 - 4 0 JCW - MAX1 40 - 6 7 DS - 3 39 - 7 5PageFor TTHM Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with thei r liver , kidneys or central nervous systems , and may have and increased risk of getting cancer For HAA5 Some people who drin k water containing haloacetic acids in excess of the MCL over many years may have an increased chance of getting cancer Inorganic Contaminants Contaminant units Sample Date MCL Violation Y N Your Water Range Low High MCLG MCL Likely Source of Contamination Fluoride ppm March 2016 N 027 N A 4 4 Erosion of natural deposits ; water additive which promotes strong teeth ; discharge from fertilizer and aluminum factories Turbidity Contaminant units Treatment Technique TT Violation Y N Your Water MCLG Treatment Technique TT Violation if Likely Source of Contamination Turbidity NTU - Highest single turbidity measurement N 0229 NTU N A Turbidity gt; 1 NTU Soil runoff Turbidity NTU - Lowest monthly percentage of samples meeting turbidity limits N 100 N A Less than 95 of monthly turbidity measurements are lt; 03 NTU Turbidity is a measure of the cloudiness of the water We monitor it because it is a good indicator of the effectiveness of our filtration system The turbidity rule requires that 95 or more of the monthly samples must be less than or equal to 03 NTU L ead and Copper Contaminants Pregnant women , i nfants and young children are typically more vulnerable to lead in drinking wat er than the general population It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing If you are concerned about elevated lead levels in your home’s water , you may wish to have your water tested and flush your tap for 30 seconds to 2 minutes before using tap water Additional information is available from the Safe Drinking Water Hotline 800 - 426 - 4791 Contaminant Units Sample Date Your Water # of sites found above the AL MCLG MCL Likely Source of Contamination Copper 90 th percentile ppm July 2015 0077 0 13 AL 13 Corrosion of household plumbing systems ; erosion of natural deposits ; leaching from wood preservatives Lead 90 th percentile ppb July 2015 0 0 0 AL 15 Corrosio n of household plumbing systems ; erosion of natural deposits Radiological Contaminants Contaminant units Sample Date MCL Violation Yes No Your Water RAA MCLG MCL Likely Source of Contamination Alpha emitters pCi L 2007 No 013 0 15 Erosion of natural deposits Beta photon emitters pCi L 2007 N o 157 0 50 Decay of natural and man - made deposits Combined radium pCi L 2007 No 005 0 5 Erosion of natural deposits Note The MCL for beta particles is 4 mrem year EPA considers 50 pCi L to be the level of concern for beta particles Total Organic Carbon TOC Depending on the TOC in our source water , the system MUST have a certain removal of TOC or must achieve alternative complia nce criteria If we do not achieve that removal , there is an alternative removal If we fail to meet the alternative removal , we are in violation of a Treatment Technique Contaminant units TT Violation Y es N o Your Water RAA Removal Ratio Range Monthly Removal Ratio Low - High MCLG MCL Likely Source of Contamination Compliance Method Step 1 or ACC # __ Total Organic Carbon removal ratio TOC - TREATED No 156 138 – 168 N A TT Naturally present in the environment Step 1 Step 1 TOC Removal Requirements Source Water TOC mg L Source Water Alkalinity Mg L as CaCO3 in percentages 0 – 60 gt; 60 – 120 gt; 120 gt; 20 – 40 350 250 150 gt; 40 – 80 450 350 250 gt; 80 500 400 300 Water Characteristics Contaminants Secondary Contaminants , required by the NC Public Water Supply Section , are substances that affect the taste , odor , and or color of drinking water These aesthetic contaminants normally do not have any health effects and normally do not affect the safety of your wa ter Contaminant units Sample Date Your Water Range Low High Secondary MCL Sodium ppm March 201 6 3 52 N A N A pH March 201 6 7 0 N A 65 to 85PageSmithfield Water Treatment Plant 2016 Data Susceptibility of Sources to Potential Contaminant Sources PCS Source Name Susceptibility Rating SWAP Report Date Neuse River Higher June 2014 Water Quality Data Table s Town of Smithfield Water Treatment Plant Town of Smithfield Water Treatment Plant 20 16 Data Contaminant Units Level Detected Range Low High Sample Date Haloacetic Acids Haa5 ppb 530 AVG 248 - 518 201 6 Total Trihalomethanes TTHMs ppb 490 AVG 240 – 650 20 1 6 Chloramines ppm 2 71 0 - 34 20 1 6 Chlorine ppm 098 098 - 155 20 1 6 Fluoride ppm 0 48 N A 201 6 Turbidity NTU 017 highest 100 of samples below limit 2016 Copper ppm 01088 90 th percentile N A 2016 Lead ppb 004 90 th percentile N A 2016 Sulfate ppm 440 N A 201 6 pH N A 7 60 N A 201 6 Sodium ppm 5402 N A 201 6 Simazine ppb 0 2 00 – 24 201 6 Step 1 TOC Removal Requirements Source Water TOC mg L Source Water Alkalinity Mg L as CaCO3 in percentages 0 – 60 gt; 60 – 120 gt; 120 gt; 20 – 40 350 250 150 gt; 40 – 80 450 350 250 gt; 80 500 400 300 Town of Smithfield Water Treatment Plant Disinfection Byprod uct Precursors Contaminants 2016 Data Contaminant units TT Violation Yes No Your Water RAA Removal Ratio Range Monthly Removal Ratio Low - High MCLG MCL Likely Source of Contamination Compliance Method Step 1 or ACC # __ Total Organic Carbon removal ratio TOC - TREATED No 116 106 – 145 N A TT Naturally present in the environment Step 1 and ACC # 4 Alternative Compliance Criteria ACC Alt 1 Source Water TOC lt; 20 mg L Alt 2 Treated Water TOC lt; 20 mg L Alt 3 Source Water SUVA lt; 20 L mg - m Alt 4 Treated Water SUVA lt; 20 L mg - m Alt 5 Treated Water Alkalinity lt; 60 mg L for softening systems only Alt 6 THM & HAA RAAs lt; 1 2 MCL & uses only chlorine Alt 7 Source TOC RAA lt; 40 mg L and Source Alkalinity gt; 60 mg L and THM & HAA RAAs lt; 1 2 MCLPagePage pageNumber5Water Quality Data Table s Johnston County East PWS # 40 - 51 - 018 Stage 2 Disinfectant Byproduct Compliance - Based on Locational Running Average LRAA Disinfection Byproduct Units MCLG MCL Your Water highest LRAA Range Low High Year Sampled MCL Violation Yes No Likely Source of Contamination HAA5 ppb N A 60 38 2016 No Byproduct of drinking water disinfection HAA - 2E 10 - 36 JCE - 03 33 - 47 JCE - 08 30 - 37 JCE - MAX1 12 - 40 TTHM ppb N A 80 71 2016 No Byproduct of drinking water chlorination HAA - 2E 23 - 45 JCE - 03 42 - 1 15 JCE - 08 29 - 101 JCE - MAX1 16 - 67 Inorganic Contaminants Fluoride ppm 4 4 042 N A 2016 No Erosion of natural deposits ; Water additive which promote strong teeth ; discharge from fertilizer and aluminum factories For TTHM Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver , kidneys , or central nervous systems , and may have an increased risk of getting cancer For HAA5 Some people who drink water containing haloacetic acids in excess of the MCL over many years may have an increased chance of getting cancer L ead and Copper Contaminants Pregnant women , infants and young children are typically more vulnerable to lead in drinking water than the general popula tion It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing If you are concerned about elevated lead levels in your home’s water , you may wish to have your water tested and flush your tap for 30 seconds to 2 minutes before using tap water Additional information is available from the Safe Drinking Water Hotline 800 - 426 - 4791 Contaminant Units Sample Date Your Water Number of sites found above the AL MCLG MCL Likely Source of Contamination Copper 90 th percentile ppm July 2014 0091 0 13 AL 13 Corrosion of household plumbing systems ; erosion of natural deposits ; leaching from wood preservatives Lead 90 th percentile ppb July 2014 0 0 0 AL 15 Corrosion of household plumbing systems ; erosion of natural deposits Disinfectant Residuals Summary Year Sampled MRDL Violation Y N Your Water highest RAA Range Low High MRDLG MRDL Likely Source of Contamination Chlorine ppm 2016 N 145 021 – 302 4 40 Water additive used to control microbes Turbidity Contaminant units Treatme nt Technique TT Violation Y N Your Water MCLG Treatment Technique TT Violation if Likely Source of Contamination Turbidity NTU - Highest single turbidity measurement N 0177 NTU N A Turbidity gt; 1 NTU Soil runoff Turbidity NTU - Lowest monthly percentage of samples meeting turbidity limits N 100 N A Less than 95 of monthly turbidity measurements are lt; 03 NTU Turbidity is a measure of the cloudiness of the water We monitor it because it is a good indicator of the effectiveness of our filtration system The turbidity rule requires that 95 or more of the monthly samples must be less than or equal to 03 NTU PagePage pageNumber6Total Organic Carbon TOC Depending on the TOC in our source water , the system MUST have a certain removal of TOC or must achieve alternative compliance criteria If we do not achieve that removal , there is an alternative removal If we fail to meet the alternative removal , we are in violation of a Treatment Technique Contaminant units TT Violation Yes No Your Water RAA Removal Ratio Range Monthly Removal Ratio Low - High MCLG MCL Likely Source of Contamination Compliance Method Step 1 or ACC # __ Total Organic Carbon removal ratio TOC - TREATED No 178 143 – 222 N A TT Naturally present in the environment Step 1 Step 1 TOC Removal Requirements Source Water TOC mg L Source Water Alkalinity Mg L as CaCO3 in percentages 0 – 60 gt; 60 – 120 gt; 120 gt; 20 – 40 350 250 150 gt; 40 – 80 450 350 250 gt; 80 500 400 300 Water Characteristics Contaminants Secondary Contaminants , required by the NC Public Water Supply Section , are substances that affect the taste , odor , and or color of drinking water These aesthetic contaminants normally do not have any health effects and normally do not affect the safety of your water Contaminant units Sample Date Your Water Range Low High Secondary MCL Sodium ppm April 201 6 537 N A N A pH April 201 6 66 N A 65 to 85 Water Quality Data Table s Harnett County Water Treatment Plant Harnett County Water Treatment Plant 2016 Data Contaminant Units Level Detected Range Low High Sample Date Haloacetic Acids Haa5 ppb 29 AVG 85 - 246 2016 Total Trihalomethanes TTHMs ppb 350 AVG 11 – 52 20 16 Chloramines ppm 304 108 - 398 20 16 Chlorine only month of March ppm 243 071 - 380 20 16 Fluoride ppm 0 60 N A 2016 Turbidity NTU 009 highest 100 of samples below limit 2016 Copper ppm 0155 90 th percentile N A 2016 Lead ppb 0 90 th percentile N A 2016 Sulfate ppm 4 66 N A 2016 pH N A 69 N A 2016 Sodium ppm 2509 N A 2016 Chlorite Distribution p pm 02 40 014 – 0350 2016 Chlorine Dioxide ppb 76 0 - 488 2016 Step 1 TOC Removal Requirements Source Water TOC mg L Source Water Alkalinity Mg L as CaCO3 in percentages 0 – 60 gt; 60 – 120 gt; 120 gt; 20 – 40 350 250 150 gt; 40 – 80 450 350 250 gt; 80 500 400 300 SWAP Result Summary Harnett County 2016 Source Name Inherent Vulnerability Rating Contaminant Rating Susceptibility Rating Cape Fear River Higher Moderate Higher Harnett County Water Treatment Plant Disinfection Byprod uct Precursors Contaminants 2016 Data Contaminant units TT Violation Yes No Your Water RAA Removal Ratio Range Monthly Removal Ratio Low - High MCLG MCL Likely Source of Contamination Compliance Method Step 1 or ACC # __ Total Organic Carbon removal ratio TOC - TREATED No 145 133 – 156 N A TT Naturally present in the environment Step 1PagePage pageNumber7Harnett County Water Treatment Plant Microbiological Contaminants Contaminant units MCL Violation Y N Your Water MCLG MCL Likely Source of Contamination Total Coliform Bacteria presence or absence N 56 0 gt; 5 triggers level 1 assessment Naturally present in the environment Fecal Coliform or E coli presence or absence N 0 0 0 Human and animal fecal waste Asbestos Contaminant Harnett County Contaminant units Sample Date MCL Violation Y N Your Water Range Low High MCLG MCL Likely Source of Contamination Total Asbestos MFL 1 13 11 N ND N A 7 7 Decay of asbestos cement water remains ; erosion of natural deposits MFL - Million fibers per Liter - a measurement of the presence of asbestos fibers that are longer than 10 micrometers In our continuing efforts to maintain a safe and dependable water supply it may be necessary to make improvements in the water system The costs of these improvements may be reflected in the rate structure Rate adjustments may be necessary in order to address these improvements Our staff in the Johnston County Utility Department work around the clock to provide top quality water to every tap We ask that all our customers help us protect our water sources , which are the heart of our community , our way of life and our children’s future This institution is an equal opportunity provider and employer Discrimination is prohibited by Federal Law To file a complaint of discrimination , write USDA , Assistant Secretary for Civil Rights , 1400 Independence Avenue SW , Stop 9410 , Washington , DC 20250 - 9410 or call toll - free at 866 632 - 9992 English or 800 877 - 8339 TDD or 866 377 - 8642 English Federal - relay or 800 845 - 6136 Spanish Federal - relay Page