EPA-910/9-73-006 A WATER SUPPLY ROGRAM UATION ------- SUMMARY IDAHO WATER SUPPLY PROGRAM EVALUATION EPA-910/9-73-006A Water Supply Unit Municipal Section Air & Water Programs Division Environmental Protection Agency Region X October 1973 ------- PREFACE Information contained in this SUMMARY has been condensed from the full report, IDAHO WATER SUPPLY PROGRAM EVALUATION. Significant study findings and major recommendations needed to give Idaho an effective public water supply program are presented. More detailed information concerning the quality and surveillance of public drinking water in Idaho is included in the full report which is available from the Idaho Department of Environmental and Community Services or the Environmental Protection Agency. ------- TABLE OF CONTENTS Page INTRODUCTION 1 PLAN OF STUDY WATER SUPPLIES SURVEYED 5 PROGRAM EVALUATION 6 STUDY FINDINGS WATER SUPPLY SYSTEM STATUS Water Quality - Bacteriological u Water Quality - Chemical 12 Facilities and Operation 13 Surveillance 15 WATER SUPPLY PROGRAM Authority, Regulations and Standards ... 17 Organization, Manpower and Budget 18 Engineering Activities 19 Laboratory Support 20 RECOMMENDATIONS 23 REFERENCES 27 PARTICIPANTS 28 ACKNOWLEDGEMENTS 31 STATE AND FEDERAL AGENCY ADDRESSES 32 ------- INTRODUCTION The great strides made in water treatment in past years have reduced the threat of the once feared major water-borne epidemics. With this technological advancement has come a sense of assurance that our drinking water supplies are failsafe and free from potential health hazards. This false sense of security is reflect- ed not only by the average citizen, but has spread to portions of the water supply industry itself. Many supplies have become victims of their own success. They have maintained a status quo without concern for improving the reliability of their system or for meeting the challenge of newer and more stringent quality standards. The Community Hater Supply Study (1) indicated that compla- cency is not restricted solely to the citizenry and utilities, but has spread also to the regulatory agencies. In general, state agencies are much less active in drinking water supply surveillance today than in past years. Program emphasis and resources have been reallocated to meet the demands of new pollution control mandates. Although extensive water pollution control efforts can provide improved raw water quality, these programs alone do not assure safety or reliability of drinking water. Such assurance is attainable only through renewed aware- ness of the public health significance of drinking water and the ------- establishment of active water supply programs at the state and local levels. Recognizing this, James L. Agee, Region X Administrator, Environmental Protection Agency, when requested by the Honorable Cecil D. Andrus, Governor of the State of Idaho, to assist in supporting environmental programs in Idaho, recommended as part of a total environmental program assessment package an evalua- tion of the State's water supply activities. Subsequent corre- spondence and discussion with State water supply program personnel resulted in establishment of an agreement for the evaluation, the purposes of which were: 1. To ascertain the condition of Idaho's water supplies through field surveys of water supply systems, laboratory analyses of drinking water samples for bacteriological, chemical and radio- chemical constituents, and examination of pertinent data recorded in the State files, 2. To determine the adequacy of legal statutes, regulations and policies, budget and manpower resources, surveillance activi- ties, laboratory support, and operator training, 3. To evaluate the effectiveness of the Idaho water supply program as determined by the condition of a representative number of the State's water supplies, and 4. To recommend improvements and additions which may be needed to assure an adequate supply of safe drinking water for residents of Idaho. ------- Field surveys to determine the adequacy of water system facilities, water quality, State laboratory facilities and opera- tions, and overall public water supply surveillance were conducted in late 1971 and early 1972. Additional information concerning subsequent legislation affecting the water supply program, recent organizational changes establishing the Department of Environmental and Community Services, and manpower and funding expenditures for public water supply surveillance through Fiscal Year 1973 has been included. ------- PLAN OF STUDY WATER SUPPLIES SURVEYED Resident population in Idaho, according to the 1970 census, is 713,000. Approximately 482,000 of these people, or 68 percent of the State's population, are served by 274 public water supplies. The health of this segment of the State's population is directly affected by the quality of their drinking water. Under State law the Department of Environmental and Community Services is respon- sible for establishing requirements and providing surveillance of these supplies to assure safe drinking water. In addition to the public supplies, there is an unknown number of systems, gen- erally designated semi-public, which serve State residents and the traveling public at restaurants, service stations, recreation facilities, trailer courts and similar establishments. Presently these supplies are neither listed nor under surveillance by the State. To accomplish the system evaluation objective, the 274 public water supplies were divided into five population groups as shown in Table 1. Twenty-eight supplies representing 10 percent of the State's public water systems were selected at random to repre- sent the respective percentage of supplies within the predetermined population groupings. The random selection was examined and found acceptable from the standpoint of geographical distribution, type ------- of source and type of treatment. Location of the supplies is shown in Figure 1. State dental health records indicate fourteen (14) of the 274 public water supply systems in Idaho adjust the fluoride content of their water for dental health protection. A special fluoride study was conducted of all fourteen supplies. Figure 2 shows the location of the fluoridated systems surveyed. PROGRAM EVALUATION The effectiveness of the Idaho water supply program in protect- ing the public health was judged on: 1. Evaluation of State statues pertaining to protection of the State's water resource for drinking purposes to determine if sufficient policy and regulation setting power is available to conduct its activities properly, 2. Review of regulations and policies adopted by the Depart- ment of Environmental and Community Services to determine their adequacy with respect to current good water supply practice, 3. Evaluation of the Department's routine bacteriological, chemical, and facility surveillance pronram through review of available records and selected field surveys, 4. Review of other program activities such as operator training and certification, cross-connection control, fluoridation and technical assistance to other State and local agencies concerned with water supply, ------- TABLE 1 SELECTION OF PUBLIC WATER SUPPLIES POPULATION GROUP Over 5,000 - 1,000 - 500 - Under 25,000 25,000 5,000 1,000 500 POPULATION SERVED 152,500 150,081 120,597 28,170 30,551 NUMBER OF SYSTEMS 3 12 53 42 164 % SYSTEMS 1.1 4.4 19.3 15.3 59.9 (% SYSTEMS) (28) 0.3 1.2 5.4 4.3 16.8 NUMBER SELECTED 1 1 5 4 17 TOTAL 481,899 274 100.0 28.0 28 ------- BOISE LEWISTON GRANGEVILLE ST. ANTHONY ST. MARIES ABERDEEN ARCO COUNCIL POTLATCH RIRIE HORSESHOE BEND HAGERMAN FRANKLIN LAPWAI HAZELTON FIRTH ARIMO ROCKLAND MOYIE SPRINGS ATHOL MIDVALE EAST HOPE CASTLEFORD STANLEY POND W.A. MURPHY HOPE HOLLISTER EUGENE OUTLOOK W.A. f \ fadamsl valley ' *> / '« /«\l A^ Washington } ,J /L custer "\ i • / \ ' r r1 boise payette nU canyon 1 24- 28- '^ y dark J 4 ^ I I ' fremontl ,; L--r~' K .. •3 / 'Jefferson ! tet n ^ I ^ J. x butte L, _ •>—J-j r-T I bonneville "—* r '—^-u in I _ •! • I W-— | ^^ ^ r ; ; ' i ^—, in , i1.-,,^, jelmore .camas u_ ""r'bingham . ~ ~ *"**.'•''"VV-I t.o^Hin7^mcoln ^ I I* '6/ .-—^ vl-._ g°°dl"S; min,^ A, ' ;"^ Ucaribou V gooding Imcom Or- .---: , 005| mimdoka! i_O ^L , ( —it'*' H , I f ^ power \ kannnrk owyhee —| ^Jjeromer /---^-to Sbannoc-iL 25 twm faTis-'^t'.l 5 i -r\17 ^t> ^J I " w 11 ^_ • *j a j __ i cassia ', f franklin '13 lake FIGURE 1 PUBLIC WATER SUPPLY SYSTEMS SURVEYED ------- BONNERS FERRY COUNCIL JEROME LAPWAI LEWISTON MC CALL MERIDIAN 9 10 11 12 13 14 SHOSHONE U f clark \ f1 i ' fremont ashmgton } rl jC. "V_ ' ! r-. V MONTPELIER MOUNTAIN HOME ORIFINO PRESTON SALMON SANDPOINT nez perce ^ I -s.,]-, m " ' bingham canyon" ( \ / ! ^~7 ^X ,^ bucte L,, ,^- K »• ^^ A '.blame < r-Jl bonneville \ j 77 l S \__ H '—^-u. •J acja lelmore Icamas ' ' r'bmpham ^V.,'9 owyhee lmore camas _j ___ -— ringam "9 goUnlF'"^ Fi I' ! ^ — ^-i *-•! A .••mmidoka, . l_' 1 ( __ |14Ty--L~J I SP°wer\ban ^ . • erome "-- i bannock -~e — lake FIGURE 2 FLUORIDATED WATER SUPPLY SYSTEMS IN IDAHO ------- 5. Evaluation of the Department's bacteriological and chemical laboratories to determine their capability to provide adequate sup- port for the water supply program, 6. Comparison of budget and manpower allocations for the present program with those considered minimal for operation of an adequate program, and 7. Evaluation of the Department's organizational structure and the water supply program's relationship to the Health Districts. The following specific criteria were used in evaluating the components of the program noted above. Bacteriological and chemical water quality was judged against the criteria of the U.S. Public Health Service Drinking Hater Standards, 1962 edition (2) , (herein- after referred to as the Drinking Water Standards). Water supply system facilities were evaluated against recommendations of the Manual for Evaluating Public Drinking Hater Supplies (3). Labora- tory operations were compared with recommended practices of Standard Methods for the Examination of Hater and Wastewater, 13th Edition (4). Legislative authority, rules and regulations, program opera- tions, and budget and staffing levels were reviewed against guide- lines developed by EPA through evaluation of state water supply surveillance programs nationwide. 10 ------- STUDY FINDINGS WATER SUPPLY SYSTEM STATUS The 28 water supplies surveyed provide drinking water to approximately 1/5 of Idaho's population served by the public water supplies and are judged to be representative of public supplies throughout the State. The findings of the survey are presented below by major categories examined. Hater Quality - Bacteriological Bacteriological testing is essential to determine if drinking water is safe. The Drinking Hater Standards recognize the coliform organism group as a reliable indicator of the bacteriological quality of drinking water. The presence of coliform organisms in the distribution system suggests either inadequate treatment or access of contaminants to the water after treatment. Failure to meet the bacteriological quality standards indicates that the water is a potential carrier of infectious disease. Such a situation is a serious potential health hazard and calls for immediate corrective action. Of the Idaho systems examined, 21 (75 percent) either did not meet the bacteriological quality standards two or more months during the twelve-month period prior to the survey, or failed to collect sufficient samples ------- during this same period to assess the bacteriological quality. These systems serve a combined peculation of 13,750. Considering only those water samples collected during the survey, five systems (18 per- cent) failed to meet the bacteriological quality criteria of the Drinking Water Standards. Comparison of bacteriological sampling results to system size indicates that smaller water systems in Idaho gen- erally distribute water of poorer bacteriological quality. Water Quality - Chemical Drinking water should not contain substances which arc toxic or may cause adverse health effects. The Drinking Mater Standards establish mandatory chemical limits for these substances. Sup- plies or individual sources from which samples have been confirmed as failing to meet these standards should be rejected. One of the public water supply systems (4 percent) examined in Idaho did not meet mandatory chemical drinking water standards. The system failing to meet the mandatory chemical standard serves a pop- ulation of approximately 400. Good quality drinking water should not contain substances 12 ------- which adversely affect its appearance, odor and taste, or which cause discomfort to man. The Drinking Water Standards set recom- mended chemical limits to assure that drinking water contains no substance in concentrations which would render it undesirable or aesthetically inferior. A supply or source of water failing to meet these standards should be considered for treatment or used as standby for alternate higher quality sources. Seven Idaho water systems (25 percent) failed to meet one or more of the recommended chemical limits. These systems serve a combined population of over 80,000. Facilities and Operation Water supply facilities include all structures and equipment utilized for collection, treatment, storage and distribution of drinking water from the source to the customer's tap. These facilities and their operation must be capable of consistently producing adequate quantities of safe drinking water and pre- venting contamination from entering the system. Any condition, device or operational practice which allows water of questionable quality to be provided to the consumer constitutes a potential health hazard. Fourteen Idaho systems (50 percent) had inadequate protection of the sources against contamination. 13 ------- Nine of these fourteen supplies also were found to have either inadequate treatment or none at all. Ten Idaho systems (36 percent) need either additional treatment facilities or improved protection of the source of supply. Eleven Idaho systems (39 percent) had inadequate distribution system facilities or need improved oper- ation of existing facilities. Twenty-seven Idaho systems (96 percent) were providing inadequate quality control to assure protection of the water supplied. A number of the larger supplies were providing appropriate bacteriological and chemical testing and were maintaining operating records. Only one supply was judged to be carrying out an adequate cross-connection control program. Most of the smaller supplies were deficient in two or more of these areas. Twenty Idaho systems (71 percent) employed operators who had never participated in any water supply opera- tors short course training. Many operators, although aware of their lack of knowledge on critical public health aspects of water supply operations, felt they could not be away from the job for even short course trainina. 14 ------- Only two (25 percent) of the eight Idaho fluoridation installations in operation at the time of the survey were providing a fluoride content in the range recom- mended by the State for maximum dental health benefits. Four (50 percent) of the eight operating Idaho fluori- dation installations had unsatisfactory storage of chemical compounds and inadequate fluoride feed equip- ment. None of the eight operating Idaho fluoridation installa- tions was providing complete analytical control of the fluoride feed level. Surveillance Surveillance of water supply systems is one of the essential responsibilities of a state health agency. It requires routine monitoring of bacteriological and chemical water quality to detect possible contamination, and regular review of system facilities and operational procedure to prevent serious health hazards from developing. There is no complete, updated inventory of all the Idaho public water supplies for which the Department of Envi- ronmental and Community Services is responsible. Twenty-two (78 percent) of the Idaho systems evaluated had not been subject to a sanitary survey within the 15 ------- previous 12 months. The average period since the last sanitary servey was over seven years. Nineteen Idaho systems (68 percent) failed to collect the required number of bacteriological samples two or more months of the previous 12-month reporting period. Little resampling or investigation was done as a follow-up to samples showing contamination. Twenty Idaho systems (71 percent) had not received a chemical analysis within the previous three years. The average period since the last chemical analysis was nine years. Those analyses which were completed did not include important health parameters such as arsenic, cadmium, chromium, cyanide, lead, selenium and silver. 'Jo routine surveillance has been provided for Idaho communities which adjust the fluoride level in their water supply. Little surveillance of bottled water or bottling operations in Idaho has been provided. 16 ------- WATER SUPPLY PROGRAM The conditions of water supply facilities and drinking water quality are directly related to the implementation of adequate regulatory powers and the provisions of training and technical assistance programs for water supply operators. The generally poor public health conditions and practices found in the field survey are largely attributable to the lack of an aggressive water supply program at the State and local levels. Signifi- cant features of the State program are described below. Authority, Regulations and Standards The Idaho statues give broad authority to the Board of Environmental and Community Services for regulation of public water supplies. Administrative responsibility for implementing these acts is vested in the Administrator of the Department of Environmental and Community Services. * Regulations governing protection of public water supply were issued in 1964. These regulations, Idaho Drinking Water Standards (5), adopt the U.S. Public Health Service Drinking Hater Standards, 1962 Edition, and orovide standards for design and construction of drinking water system facilities. In addition, minimum well construction standards were adopted by the Depart- ment of Water Administration in 1968 and all water well contrac- tors are required to be licensed. These two sets of regulations ------- are generally adequate to permit operation of an acceptable public water supply program. Organization, Manpower and Budget Considerable reorganization of health and social service agencies has occurred recently in Idaho. At the time of the field surveys in 1971-1972 the water supply program was organi- zationally located in the Department of Health. At that time the water supply activity was not an identifiable unit within the parent organization. General program direction was pro- vided by the Chief of the Engineering Division and field work was accomplished by individuals in the three Health Department Regional Offices. The total manpower allocations for water supply surveillance and technical assistance in fiscal years 1971 and 1972 were 1.0 man-year. Estimated expenditures for field acti- vities were $22,000. Laboratory support increased total water supply program expenditures to $91,000 per year. Action by the 1972 and 1973 Idaho legislatures resulted in reorganization of the State health programs and establishment of the Department of Environmental and Community Services. General water supply program direction is now provided by the Director of Categorical Programs with field work being carried out by the regional offices staff under direction of the Director of Regional Operations. Manpower allocations for water supply 18 ------- activities increased to 2.7 man-years in fiscal year 1973. Total expenditures, including laboratory support, increased to $124,000. Although these increases have improved the State's water supply surveillance activities over that at the time of the field survey, the overall effort remains inadequate and the water supply program is not yet considered to be fulfilling its responsibilities. The State has not delegated to the local Health Districts any portion of the responsibility for enforcement of the State public water supply regulations. Informal working agreements have evolved between certain Health Districts and the State regional engineers. However, the ultimate potential for fully utilizing the Health Districts in selected areas of surveillance and enforcement of water supply regulations has yet to be developed. Engineering Activities Few formal inspections and follow-up surveys of water system facilities along with limited review of water quality and opera- ting records have resulted in little enforcement of established standards. Enforcement is hampered, not only by lack of manpower to carry out field surveys and laboratory analyses, but also by the continued use of a time consuming, manually operated data recording and retrieval system. Review of plans and specifications for new construction and modifications to existing water system facilities has been carried 19 ------- out with some degree of regularity. This effor, along with providing technical assistance on special problems and emergencies, has accounted for the majority of the professional manpower resource allocation to water supply activities. The Department conducts an annual three-day water supply and wastewater operators short school. Many of the smaller water system operators, who most need the training, are not being reached by this program. The State maintains voluntary operator certification programs for both water supply and wastewater operators. As of July 1973, 178 water supply operators repre- senting 38 communities (14 percent) have been certified under this program. Laboratory Support Bacteriological and chemical laboratory support for the water supply program is provided by the Department's Laboratory Section. Facilities and analytical procedures were evaluated at the chemical laboratory and three of the six bacteriological laboratories. Procedures and operations were found in general compliance with recognized analytical methods. Additional emphasis will be required to provide laboratory capability to routinely analyze for toxic chemicals in drinking water. 20 ------- In summary, the Idaho Department of Environmental and Community Services is not providing the surveillance and con- sultative services necessary to fulfill its responsibilities to protect the health of those who drink water from public sys- tems in Idaho. It is evident that Idaho must implement an expanded water supply program with increased commitment in the overall spectrum of activities that will assure the State's residents and visitors an adequate and safe supply of drinking water. 21 ------- RECOMMENDATIONS A primary purpose of this evaluation was to propose recom- mendations needed to provide an effective water supply program for Idaho. To properly provide the health evaluations, engin- eering services, and technical assistance necessary, it is recommended that: 1. The water supply program be upgraded to a stature commensurate with its importance to the health of Idaho resi- dents and visitors with a minimum annual budget of $239,000 allocated as follows : a. Engineering surveillance and $128,000 activities b. Laboratory services 71,000 c. Management and overhead 40.000 $239,000 2. The water supply program manpower resources be increased to a minimum of 6 man-years of professional staff and 2 man-years of secretarial support, to provide essential surveillance, train- ing and program direction activities. 3. The bacteriological surveillance program be redirected to: a. Encourage water supply purveyors to develop their own bacteriological monitoring program, b. Charge a reasonable fee to cover the cost of routine bacteriological analyses, and ------- c. Conduct a check sampling program, at State expense, to assure validity of routine sampling by purveyors. 4. The chemical surveillance program be expanded and modified to: a. Conduct at least one complete chemical analysis on each surface water supply annually and on each ground water supply triennally, and b. Discontinue the practice of performing chemical analyses for operational control which are considered the respon- sibility of the water supply purveyor. 5. Enabling legislation be adopted requiring: a. Mandatory certification of all public water supply facility operators, b. Coordinated planning and development of new public water supply systems and the consolidation of the large number of small suppliers in urbanized regions of the State, and c. Fluoridation of community water supplies not containing dentally significant concentrations of natural fluo- rides. Enactment of this requirement should be delayed until qualified operators are available and the Department's surveil- lance and monitoring program improves. 6. The 1964 Idaho Drinking Water Standards be revised to: a. Recognize recent organization changes, b. Update water quality and monitoring criteria, c. Incorporate special design, operation and moni- toring requirements for small public water supplies and bottled water facilities, d. Establish chlorination as the minimum treatment for all public water supplies and filtration for all surface water sources with individual cases being exempted at the dis- cretion of the Administrator if the purveyor can demonstrate adherence to standards with disinfection alone, and e. Reflect improved water treatment and distribu- tion practices. 24 ------- 7. A program be established to document present and future policy decisions for distribution in a water supply program policy manual. 8. Surveillance of all public water supplies be increased to provide at least the minimum levels set forth in the Drinking Hater Standards and the Manual for Evaluation of Public Water Supplies, including but not necessarily limited to: a. Development and continued updating of a compre- hensive inventory of public water supplies, b. Thorough annual sanitary surveys of each system with follow-up as required, c. Increased effort to assure minimum bacteriological sampling along with the required check samples from all supplies, d. Establishment of a routine complete chemical sampling program for each supply, e. Establishment of a program to encourage adoption of local cross-connection control ordinances and institution of viable surveillance programs for elimination of backflow condi- tions, f. Increased emphasis on surveillance of fluoridated supplies to assure adequacy of these operations, and g. Initiation of a surveillance program to assure that bottled water quality and bottling practices comply with estab- lished standards for food packaging and water quality. 9. Operator training be improved by: a. The Department working more closely with the State universities and community colleges on operator entry level and upgrade training programs, and, b. Increased program flexibility to meet the needs and schedules of both full and part-time operators. 25 ------- 10. Computer services be utilized for storage and retrieval of water quality data, engineering report information, monthly operating report records and inventory data. 11. A memorandum of agreement be developed with each Health District for surveillance of and technical assistance to the State's small public and recreational water supply systems. 26 ------- REFERENCES 1. Community Water Supply Study - Analyses of National Survey Findings. U.S. Public Health Service, Bureau of Water Hygiene, July, 1970. 2. Public Health Service Drinking Water Standards, 1962 ed. USPHS Pub. No. 956, U.S. Government Printing Office, Washington, D.C. , 1969. 3. Manual for Evaluating Public Drinking Water Supplies. U.S. Environmental Protection Agency, U.S. Government Printing Office, Washington, D.C., 1971. 4. Standard Methods for the Examination of Water and Wastewater, 31th ed. American Public Health Association, New York, New York, 1971. 5. Idaho Drinking Water Standards. State of Idaho, Boise, 1964. 27 ------- PARTICIPANTS Tne following persons and/or agencies made major contribution to the successful completion of this study. Study Director William A. Mullen, Chief, Water Supply Unit Air & Water Programs Division, EPA, Region X, Seattle Study Advisor Francis L. Nelson, Chief, Technical Support Branch Surveillance and Analysis Division, EPA, Region X, Seattle Field Evaluation Howard L. Burkherdt, Regional Environmental Engineer, Idaho Department of Environmental Protection & Health, Pocatello I/ Thomas M. Hushower, Chief, Special Studies Section Water Supply Division, EPA, Washington, D.C. Earl F. McFarren, Supervisory Chemist, Standards Attainment Branch Water Supply Research Laboratory, NERC, EPA, Cincinnati William A. Mullen, Chief, Water Supply Unit Air & Water Pronrams Division, EPA, Region X, Seattle Harry D. Nash, ["icrobiologist, Standards Attainment Branch Water Supply Research Laboratory, NERC, EPAS Cincinnati Francis L. Nelson, Chief, Technical Support Branch Surveillance and Analyses Division, EPA, Region X, Seattle Jeffrey T. Pearlman, Dental Technician, Dental Health Section Idaho Department of Environmental Protection & Kealth, Boise I/ James E. Warren, Staff Engineer, Surveillance and Technical Assistance Section Water Supply Division, EPA, Washington, D.C. Arthur W. Van't Hul, Regional Environmental Engineer Idano Department of Environmental Protection & Health, Lewiston I/ Jerry L. Yoder, Regional Environmental Engineer Idaho Department of Environmental Protection & Health, Boise I/ 28 ------- Laboratory Support Fluoride Laboratory, Water Supply Division, EPA, Washington, D.C. Cincinnati Water Hygiene Laboratory, EPA, Cincinnati, Ohio 2/ Gulf Coast Water Hygiene Laboratory, EPA, Mobile, Alabama 3/ Northeast Water Hygiene Laboratory, EPA, Narragansett, Rhode Island 3/ Northwest Water Hygiene Laboratory, EPA, Gig Harbor, Washington 3/ Southwest Radiological Health Laboratory, EPA, Las Vegas, Nevada 4/ Idaho Department of Environmental Protection & Health Laboratory, Boise ]_/ Idaho Health District Laboratory, Coeur d'Alene Idaho Health District Laboratory, Idaho Falls Idaho Health District Laboratory, Lewiston Idaho Health District Laboratory, Pocatello Idaho Health District Laboratory, Twin Falls Data Processing - Water Supply Division, Data Processing Unit, Cincinnati Grace D. Bardo, Statistical Clerk Arthur F. Hammonds, Computer Systems Analyst George C. Kent, Chief, Water Quality Register Branch Richard L. Manning, Computer Systems Analyst 29 ------- Report Preparation Karen M. Ihrig, Principal Typist William A. Mullen, Chief, Water Supply Unit Francis L. Nelson, Chief, Technical Support Branch ]_/ Agency subsequently renamed Idaho Department of Environmental and Community Services. 2/ Laboratory subsequently renamed Water Supply Research Laboratory, ~~ National Environmental Research Center-Cincinnati. 3/ Laboratory subsequently consolidated with Water Supply Research Laboratory, NERC-Cincinnati. 4/ Laboratory subsequently renamed National Environmental Research ~~ Center-Las Vegas. 30 ------- ACKNOWLEDGEMENTS The assistance and cooperation of Mr. Vaughn Anderson, Director of Categorical Programs, Environmental Protection Division, Idaho Department of Environmental and Community Services, is greatly appreciated. Mr. Anderson and his office staff gave freely of their time and contributed valuable back- ground information during the formative stages of the study. The effort expended by the Regional Engineers in scheduling the field surveys and accompanying the survey officers is gratefully acknowledged. Dr. Darrell Brock, Director, Laboratory Section, Office of Program Support, Idaho Depart- ment of Environmental and Community Services, and the staff members of the laboratories providing bacteriological and chemical analyses made significant contributions. A special thank you is also given to all the residents, waterworks per- sonnel and utility officials who provided information and generously cooperated in the study. 31 ------- STATE AND FEDERAL AGENCY ADDRESSES STATE: Idaho Department of Environmental and Community Services Environmental Protection Division Categorical Programs Statehouse Boise, Idaho 83701 Telephone: 208-384-2390 FEDERAL: Environmental Protection Agency, Pvegion X Air & Water Programs Branch Water Supply Unit 1200 Sixth Avenue Seattle, Washington 98101 Telephone: 206-442-1216 32 ------- |