Rural Water Digs In Vulnerability Assessment Workshops Workers from Eatherly Constructors of Garden City, Kansas, install a six-inch waterline to connect water plants in St. James and Butterfield, part of an expansion by Red Rock Rural Water System. For more details, see the story on page 4. The Minnesota Department of Health (MDH) and Minnesota Rural Water Association (MRWA) will be offering workshops on security and vulnerability assessments for small water systems in 2003. A recently enacted law (June 2002) calls for all community water systems serving a population greater than 3,300 to conduct a vulnerability assessment of its system to attacks or other types of intentional acts intended to disrupt service and submit it to the U. S. Environmental Protection Agency (EPA). The MDH/MRWA workshops are intended primarily for systems serving 3,300 or fewer people, but larger systems are invited to attend. Even though systems in the 3,300 or fewer group are not required by law to perform a vulnerability assessment, they are encouraged to do so and to take steps to ensure the security of their systems. The first workshop will be held on Tuesday afternoon, March 4, as part of the MRWA Technical Conference in St. Cloud. Meanwhile, a Security Vulnerability Assessment Guide is available on the MDH Drinking Water web site at http://www.health.state.mn.us/divs/eh/water. Upcoming Certification Exam Dates March 6, St. Cloud March 28, Rochester April, Southwest Minnesota April 3, Bloomington April 11, International Falls June 13, Brainerd Lakes Area See calendar on back page for more details Winter 2002-03 Volume Ten/3 Inside: The top of a water tower provides a panorama of the scenic campus at St. John’s University in Collegeville, Minnesota. The view isn’t available from inside the tower, however, where scuba diver Julio Maschung spent most of his time during a recent inspection. For more, turn to page 3. Training News Disinfection of Water Storage Facilities Confined Space Climax and Sabin Selected for Arsenic Demonstration Program Waterworks Quiz 1. Two important considerations in locating storage are By Karla Peterson The U.S. EPA recently announced that the Minnesota cities of Climax and Sabin have been selected for the Arsenic Treatment Demonstration Program. Several Minnesota communities submitted proposals, which included information on water quality, available space for equipment and wastewater disposal, and operator availability. Only 12 communities throughout the United States were chosen to participate. The objective of the demonstration program is to evaluate the efficiency and effectiveness of drinking water treatment technologies to meet the new arsenic maximum contaminant level of 10 micrograms per liter (or parts per billion) for varying source water quality conditions. Treatment technologies may be new or added and may include process modifications and engineering approaches. The program will evaluate the reliability of technologies for small systems; gauge the simplicity of operation, maintenance, and required operator skills; determine cost-effectiveness; and characterize treatment residuals. Each participating community will be matched with a treatment technology and vendor. The community will operate the treatment facility for one year. At the end of the year, the community may choose to continue using the treatment technology or return the treatment equipment to the vendor. The results of the demonstration program will be useful to other Minnesota communities in determining the most appropriate treatment for their particular water quality. Once again, congratulations to Climax and Sabin! environmental impact and: a. proximity to treatment facilities. b. maintenance of system pressure. c. distance from pumping station. d. distance from load-control center. 2. For continuous and effective removal of turbidity and most organic compounds causing tastes and odors, the minimum depth of granular activated carbon as a filter media is recommended to be: a. not less than 12 inches. b. 24 inches. c. 36 to 42 inches. d. none of the above. 3. Which of the following fluoride compounds contains the greatest percentage of fluoride? a. fluosilicic acid (H2SiF6) b. sodium fluoride (NaF) c. sodium silicofluoride (Na2SiF6) d. all are about the same Bonus Question Translate: Where there are visible vapors having their prevalence in ignited carbonaceous materials, there is conflagration. Answers on page 3 Cool Web Sites Drinking Water Institute: http://www.mnawwa.org/Education/youth_ed.html Wet in the City: Centers for Disease Control and Prevention: The Groundwater Foundation: http://www.wetcity.org http://www.cdc.gov http://www.groundwater.org EPA Drinking Water for Kids: http://www.epa.gov/OGWDW/kids White House: http://www.whitehouse.gov United States Geological Survey: http://www.usgs.gov Safe Drinking Water Act http://www.epa.gov/safewater/sdwa/sdwa.html National Safety Council: http://www.nsc.org Alcor Life Extension Foundation (where Ted Williams is vitrified): http://www.alcor.org Pass It On Waterline Published quarterly by the Drinking Water Protection Section, Minnesota Department of Health Editor: Stew Thornley Staff: Dick Clark Jeanette Boothe Noel Hansen To request this document in another format, call 651/215-0700; TDD 651/215-0707 or toll-free through the Minnesota Relay Service, 1/800/627-3529 (ask for 651/215-0700). Past issues of the Waterline (in PDF format) are available at: http://www.health.state.mn.us/divs/eh/ water/binfo/newsletters/archivedmain.html 2 Spotted by a member of Dogbert’s New Ruling Class and reported in the Dilbert newsletter: A sign above a drinking fountain at Shanghai International Aiport that read, “This water has been passed by health inspectors.” Capacity Development Report All states were required by the EPA to send a capacity development report to their governors. States were free to develop their own content and format. Minnesota’s report, which provided a review of the MDH public water system regulation, is at: http://www.health.state.mn.us/divs/eh/water/ iinfo/dwrf/capacity.html. St. John’s Tower Gets a Cleaning Assisted by Will Stennard, Julio Maschung emerges from the water tower at St. John’s University in Collegeville, Minnesota, after cleaning and inspecting the 250,000gallon tank on August 16. Maschung vacuumed sediment while also providing a look at the interior through a camera on his helmet and closed-circuit television equipment, which was monitored by dive controller Darrick Cusick on the ground. This dive team from Liquid Engineering Corporation of Billings, Montana, travels around the country inspecting, cleaning, and repairing water storage reservoirs. They work for two months, then get two weeks off, and alternate the duties of diver, dive controller, and tender. Tom Vogel, the chief engineer for St. John’s University, said he liked the process since it allowed the tower to remain operational. “Anytime you have to drain your tower and make other provisions, it’s kind of a pain,” Vogel said. “Water isn’t free. Why dump it all if you don’t have to?” Water Storage Facility Disinfection Water Tower Safety By Mark Sweers By Bill Anderl Over the years we have experienced many bacteriological problems in water supply systems that have originated in a finished-water storage tank. Many of the problems occurred in tanks that were not properly disinfected before the tank was returned to service following maintenance. Regardless of whether it was the water utility’s personnel or a contractor who entered the tank, or whether the maintenance was a routine inspection and cleaning or something major such as interior repainting or structural work, proper disinfection procedures need to be followed to protect the bacteriological quality of the water. If you have a maintenance contract with a tower company or are having your tank painted, check the contract and see who is responsible for the chlorination, and then make sure it gets done. If you do not have the training and equipment to climb your tower or enter your tank, make it the contractor’s responsibility. Also, don’t be afraid to ask questions of your contractor; remember, you’re paying the bill and are responsible for the water quality in your system. Did they lock the access hatch? Who has a key to the hatch and ladder? Did they check the vent(s) and overflow for proper screening? Did they look for other sanitary defects that may affect your water quality? Is the coating in good condition? These are questions you should be asking your contractor. American Water Works Association (AWWA) Standard for Disinfection of Water-Storage Facilities, C652-92, provides information on three different methods of disinfection that may be used prior to returning a storage facility to service. This standard also includes disinfection procedures when conducting underwater inspections by divers. The three methods of chlorination—explained in detail in the standard, which also provides information on the amounts of chemical needed—are chlorination of the entire tank such that, at the end of the appropriate retention time, the water has a free chlorine residual of not less than 10 parts per million (ppm); a covering of all interior surfaces that come in contact with water with a solution of 200 ppm chlorine; and chlorination of a full tank of water having a free chlorine residual of 2 ppm after 24 hours. Water operators may enjoy the challenge of climbing a tower but often fail to realize the risk factors involved. Work on an elevated water tower involves extreme hazards. Some of the more important safety concerns that relate to water tower maintenance and inspection include ladders, fall protection, personal protective equipment, confined space entry procedures, rescue/emergency procedures, mutual-aid agreements, liability, and weather. Some water systems contract tower work, but this approach still requires oversight and monitoring by the local operator. Fire and rescue workers need to be provided advance notice of water tower work, and water operators need to be involved with pre-incident planning for rescue work. Details of a recent worker fatality in a southern Minnesota community have not yet been released by Minnesota Occupational Safety and Health Administration (OSHA). In reviewing information on other water tower fatalities, it is likely that some of the same accident factors will be identified. Accident prevention recommendations are usually provided by Minnesota OSHA after the investigation and will focus on: • Fall protection equipment and training program • Hazard recognition and avoidance • Ladder safety training • Confined space program requirements • Rescue planning for elevated work Perhaps you are thinking that the training and safety equipment are too expensive and time-consuming for a small community. Think again. What if the lack of training or equipment cost a life or caused a serious injury? Maybe it is worth the time to have a practice tower rescue with the fire department or to replace some old equipment. If a new tower is being planned, talk to the engineer about the operator safety concerns you have and eliminate them in the design stage. Answers to Quiz 1. b 2. b 3. a Bonus Question: Where there’s smoke, there’s fire. 3 Tackling the Challenges of a Region Rural Water Works to Serve Those Who Need Water “We do little promoting of our services,” says Dominic Jones, manager of Red Rock Rural Water System in southwestern Minnesota. “Most of our business comes from word of mouth.” Acquiring new customers has never been a problem for Red Rock; however, finding additional sources of water to meet constantly growing demands is an ongoing challenge. Unlike a municipal water utility, the supply area for a rural water system is not neatly confined by city limits. Red Rock attempts to get water to where it is needed—farms, lake homes, even cities—in a service area that now encompasses approximately 3,200 square miles. John Baerg, one of the founders and still a member of Red Rock’s Board of Commissioners, notes that Red Rock— with its wellfield and treatment plant outside Windom—is “on the fringes of where there is water,” which differentiates it from the other two rural water systems in southwestern Minnesota: Lincoln-Pipestone in Lake Benton and Rock County in Luverne. In addition to its three wells, Red Rock has been purchasing water from other systems, such as Lincoln-Pipestone Rural Water and the cities of Balaton and Windom. It is now in the process of hooking up to the city of St. James’s water supply. This was made possible by an expansion to the St. James plant, which was partially paid for by Red Rock Rural Water System. Baerg recalls the roots of the Red Rock system. A farmer on the outskirts of Butterfield, Baerg had a private well that produced water so hard that, “We couldn’t keep faucets in the house. The hard water ate up the chrome, and we had to keep changing them. The softener didn’t work very well. It would plug up all the time.” Other farmers in the area had the same problem with the water, if they had water at all. Jim Evers spent more than $50,000 on well drilling but came up dry in a search for water on his property. “For the rest of us, it was a quality issue,” said Baerg. “For Jim, he just didn’t have water. He had livestock and was having to haul water in.” In the late 1970s, a brother of Evers to the west hooked up to a rural water system and was pleased with the results, prompting Evers—desperate for any kind of water—to call the Minnesota Rural Water Association and inquire about starting a rural water system in Cottonwood, Murray, and Watonwan counties. Along with an attorney and engineering firm, a group of farmers began meeting in Evers’s garage. Like the others, Baerg had no involvement in water supply to this point; he was merely a farmer in search of good water. He was also skeptical about whether what they were considering could really be done. “We had been told that we couldn’t do this—run miles of water pipe between farms. The engineer assured us it would work, but I didn’t believe it until we did it.” Even with these doubts, Baerg and others set out to recruit 300 customers, the number required by Farmers Home Administration (now U. S. Department of Agriculture Rural Development) to finance the project. “We signed up those first 300 people without any idea where the water would come from,” he said. “We didn’t have a water supply. We didn’t even know where the wells would be because the wells would be determined by where there was water and where the users were.” A substantial financial commitment was required to sign up for rural water. Baerg notes that the exact cost of $7,178 was “a number we just picked out at the time since we had no idea where we were at. “We got our 300 sign ups. They promised to pay us more than $7,000— signing a document saying we could assess their property for that amount— and we were selling nothing.” Nothing but a promise, that is. Red Rock—Continued on page 5 John Baerg, left, was skeptical about the ability to pipe water between farms when he and others began signing up farmers for the Red Rock Rural Water System, which has continually expanded since it went on-line in 1985. The latest expansion requires the purchase of water from the city of St. James. Here, Baerg stands in front of the new St. James filter with Red Rock manager Dominic Jones and St. James chief water plant operator Mark Sturm. 4 Continued from page 4 However, it turned out to be several years before Baerg and the others could deliver on their promise. Litigation with a well driller delayed the process. Finally, in 1984, the project was bid and construction began. Many of the customers were roughly in a line between the towns of Delft, Dovray, and Garvin. In between was the city of Jeffers, which became the headquarters for Red Rock Rural Water System. A treatment plant and 100,000-gallon tower went up a few miles to the south, outside of Windom. Nearby, on the banks of the Des Moines River, two wells were drilled. The system went on-line in late 1985. “I got my water between Christmas and New Year’s,” said Baerg. “What a change.” The hardness of the water coming into his home went from 105 grains per gallon (the levels out of their well) to 25 grains per gallon. The salt consumption for his water softener dropped by nearly two-thirds. Other customers also had positive results with the switch to rural water. Red Rock Rural Water System has dual filters to reduce iron and manganese at its treatment plant near Windom. The list of rural customers rose to close to 400, and in 1990 Red Rock also began supplying water to the city of Wilder. With the growth came additions to the treatment plant, which has a pair of gravity filters on the outside of the building to reduce levels of iron and manganese. The demand, from both rural customers and other cities, continued, requiring an expansion of the system in 1993, the year that Jones became its manager. “This was the Murray County expansion,” Jones explained, “which included a lot of homes around Lake Shetek.” Red Rock added a third well at this time and also began purchasing water from the city of Balaton, in the northwest corner of the system. In addition, it entered into a water-purchase agreement with Lincoln-Pipestone Rural Water System. Lincoln-Pipestone is on the other side of a continental divide, in the Missouri River Drainage Basin. Pumping water from there to the Mississippi River watershed poses some administrative problems. “It’s the only source we take water from on the wrong side of the divide,” Jones said. “Under the water-purchase agreement with Lincoln-Pipestone, which was approved by the Department of Natural Resources, we’re only taking 50 gallons per minute, a small amount that we use to blend the water. Balaton’s water is relatively hard. Lincoln Pipestone’s is relatively soft. It’s a 50-50 blend and comes out with a hardness of 30 grains instead of 44, which was what we got from Balaton.” Requests for service continued and resulted in more upgrades for both Red Rock Rural Water System and the city of Windom, which was already planning upgrades to its treatment plant and an expansion of its well field. With Red Rock needing additional capacity, the two systems worked out a waterpurchase agreement. In 1996, the Minnesota legislature approved a grant to Red Rock to add a 500,000-gallon water tower along with a transmission line to connect with Windom’s water supply. Around that time, Rural Development came through with a loan that allowed for another 240 miles of mainline service to provide water to Odin and Ormsby. These cities were added to the system in 1997 with Dundee coming on board the following year. The end of the century did not bring any reduction in the cities and rural residents wanting to sign up with Red Rock. Faced with high radium levels, the city of Butterfield needed an alternative supply of water, and an emergency connection was made in 2001. Meanwhile, plans were underway for a multi-phase expansion project that includes Red Rock purchasing water from the city of St. James. Toward this end, Red Rock is helping to finance an upgrade to the St. James treatment plant 5 that includes the addition of a backwater reclaim filter and a 500 gallon-per-minute (gpm) gravity filter as well as the rehabilitation of two existing 750-gpm filters. Mark Sturm, the chief water plant operator for St. James, says the timing of the project was very good for them. “We had been looking at expanding for years and rehabbing our old filters.” The first phase, which began last May and will be substantially complete by the end of 2002, will bring service to an additional 213 customers. Through the summer of 2002, crews from Eatherly Constructors, Inc. of Garden City, Kansas, installed a six-inch mainline from the St. James plant to the treatment facility in Butterfield, a distance of approximately eight miles. Directional drilling was used to get the pipe under streams, roads, and driveways with most of the installation being done with open cuts. As much as possible, the pipe was installed along the edges of fields adjacent to the roadway rather than in the ditch. “We like to go in the field with the pipe,” says Baerg, “because in the ditch the equipment is crooked, and we have to put the pipe in the ground with five feet of cover because of the freezing.” Although it requires easements from landowners to use the fields, Baerg says its worth it since the trenchers, backhoes, and excavators operate better on level ground. Service lines bring water to individual customers. All the new users paid the same amount, regardless of how far off the mainline they are. One of the farthest is Wayne Hanson, who lives a mile south of the mainline. Concerns over water quality caused Hanson to sign up for the service. He had a 36-footdeep well with very hard water—more than 100 grains per gallon. Hanson no longer has livestock on his farm but still raises corn and soybeans. Baerg says some of the customers with livestock are seeing the biggest difference in switching to rural water. “Many have found that the better quality water produces healthier livestock. For most customers, the hookup to rural water pays for itself. I have yet to meet a customer who is unhappy with the water. I can’t explain the explosion that there is [with the demand for rural water].” The explosion is not just from rural customers or even cities, says Jones. Red Rock—Continued on page 6 customers will be added in 2003 as part of the second phase “We have a number of wet industries abounding in southwest of the current expansion. “People are begging us to come to Minnesota,” he explained. “Ethanol and soybean plants, the them, so we’re looking at a third phase,” says Baerg. beef and pork industries are consuming water at a high rate. As always, it comes down to finding additional sources of They do their design based on the location of the corn, beef, water. Red Rock is now involved in a joint water-research poultry—whatever their industry is—and they put their plant project with Lincoln-Pipestone Rural Water and the city of next to a rail line or highway. They Worthington. However, the results of look for gas or electric lines, but they test drilling have not yet identified any forget that they need water. new sources. “They’ve been battling “Our biggest issue is deciding what that issue [finding good water] since our priorities are—economic growth I’ve been here,” says Jones, “and or giving people in southwest they’ve been battling it before I was Minnesota potable water on a wide here.” regional basis.” The battles will continue, no doubt, With 1,000 miles of mainline, Red as Red Rock and other rural water Rock now provides service to more systems continue their mission to than 1,100 rural customers and eight ensure people get good quality water cities. More than 200 additional rural New customer Wayne Hanson with Dominic Jones. where it is needed. Red Rock Rural Water—Continued from page 5 On by Pressure, Off by Flow determine what station discharge pressure was necessary in order to provide a minimum acceptable pressure to each user after system elevation and frictional losses. “The algorithm that resulted, simplified, is that flow determines the minimum acceptable pressure at pump station discharge. A drop below this pressure required the next higher pumping stage while a drop in flow below the stage’s flow set point would allow a drop in pumping stage. Each pump stage had its own set of minimum acceptable discharge pressures and flows. “For many, this was further simplified to, ‘On by pressure, off by flow.’ This proved to be a great improvement over earlier pressure/pressure-control systems. A small, low-head pump could be used for the lower pump stage, with each succeeding stage using a larger, higher-head pump. Adequate pressures were provided to all users at all flow conditions.” “That’s the trick,” says Janzen, “stopping the pumps based on flow rather than pressure.” By doing this and regulating discharge pressure with pressure-reducing valves, Janzen says a system could maintain pressure at the farthest ends of its system. DeWild Grant Reckert and Associates Company of Rock Rapids, Iowa, the engineer on the current Red Rock Rural Water System expansion, at that time used a computer model to calculate the theoretical pressure at the ends of a system. “The model was to control the pumps in a booster station based on demand,” says Gordon Krause, the head of the Water Resources Department for DeWild Grant Reckert. “We refer to that as our pressure-flow system, where you’d be pumping directly into a distribution system as opposed to an elevated tank where, on that system, you’d just stop the pumps when the tank was full and start it when it needed water. “It has allowed us to design systems without having elevated storage. During the early development of rural water systems, there wasn’t enough money to build the systems with the elevated tank and the gravity systems that we’re using now, so this was a lower-cost alternative that allowed us to build some systems that probably would not have been built if we didn’t have that.” Decades after the Rural Electrification Administration brought electricity to farmers, the same concept began with an even more important resource—water. Jerry Janzen, now an engineering manager for U. S. Filter of Vadnais Heights, Minnesota, recalls the role that rural water systems played in getting water where it was needed. “We’re now seeing water for the farm industry being a lot more extensive than it was 20 years ago, when farmers just pretty much lived with the rainfall they had,” he says. More than 20 years ago, Janzen was with Dynamic Systems, Inc., which had been involved in the development of rural water systems in the Dakotas in the 1970s. The company concluded that the traditional method of building rural water systems—which essentially mimicked a municipal water supply by attempting to control pressure throughout the system by the placement of elevated tanks in strategic locations—didn’t make sense in sparsely populated areas. “Within a city, particularly with loops being used, there is seldom more than a mile from a tower to the user,” explains Dynamic Systems, Inc. founder Bob Minnihan. “A large city will build in loops with large lines so that friction loss variations are a very small part of delivery pressure to the user. While this approach was used in early rural water systems, it quickly became cost prohibitive in systems less dense in users and with longer transmission lines. Consultants at that time attempted to solve the cost problem by designing distribution systems using smaller pipe, which could be plowed in directly rather than trenched. However, in many of the systems of this type, frictional losses of up to 50 psi [pounds per square inch] were normal. The first generation of controls were inefficient and unreliable.” Minnihan, working with the consultants designing the water systems, concluded that frictional losses at high flows were of greatest concern and that, as flows approached design capacity, distribution frictional loss would statistically approach design losses. “This realization allowed each user’s supply pressure to be predicted operationally based on the source pumping station’s discharge pressure and flow,” Minnihan said. “From this knowledge, it was possible to 6 Spring 2003 Schools The 2003 Metro Waterworks Operators School will be held from Tuesday, April 1 through Thursday, April 3 at the Thunderbird Hotel in Bloomington. The certification exams will be held on Thursday afternoon. A Competent Person workshop will be offered with both classroom and on-site training on April 2. There will be an additional $35 registration fee for those taking the Competent Person training, and it will be limited to the first 50 to register. Participants in the school will receive 16 credit hours for their attendance. The registration for the school is $115 ($150 after March 17 or at the door). Other spring schools include the Southeast School, March 26-28, Best Western Apache, Rochester; Southwest School, April (exact date and location to be announced); Northeast School, April 9-11, Holiday Inn, International Falls; and Central School, June 11-13 at either Cragun’s or Ruttger’s in the Brainerd Lakes area. Below is a registration form for the Metro School. The Spring 2003 Waterline will have the entire Metro School agenda with a registration form that will include the other three-day spring schools. MRWA Conference The 2003 Minnesota Rural Water Association (MRWA) Technical Conference will be held at the St. Cloud Civic Center from Tuesday, March 4 through Thursday, March 6. For more information, contact the MRWA office at 218/685-5197 or via e-mail at [email protected]. 2003 Teleconferences The American Water Works Association has set Thursday, March 13 and Thursday, November 6 as the dates for its 2003 teleconferences. The topics will be Water Storage in March and Water Quality in November. The downlink locations serving the Minnesota Section will be Hennepin County Technical College in Brooklyn Park, the Minnesota Department of Health in St. Paul, Memorial Union Hall on the campus of the University of North Dakota in Grand Forks, and Lake Superior College in Duluth as well as sites in North Mankato and Bemidji. Participants will receive 4 contact hours. All AWWA members will receive registration information in the mail. A registration form for the March 13, 2003 teleconference is below. REGISTRATION FORM FOR TELECONFERENCE AND SPRING SCHOOLS You may combine multiple fees on one check if more than one person is attending a school; however, please make a copy of this form for each person. Questions regarding certification, contact Cindy Cook at 651/215-0751. Questions regarding registration, contact Jeanette Boothe at 651/215-1321. AWWA Teleconference: Water Storage. March 13, 2003. Fee: $65 ($85 after March 7 or at the door) for all but North Mankato; $55 ($75 after March 7 or at the door) for North Mankato (no lunch served at this site). Check location you wish to attend: ____ Minnesota Department of Health Distance Learning Center, Metro Square Annex, St. Paul, Minnesota ____ Hennepin County Technical College, Brooklyn Park, Minnesota ____ University of North Dakota, Grand Forks, North Dakota ____ Lake Superior College, Duluth, Minnesota ____ Northwest Technical College, Bemidji, Minnesota ____ South Central Technical College, North Mankato, Minnesota Southeast School, March 26-28, 2003, Best Western Apache, Rochester. Fee: $125 ($135 at the door). Metro School, April 1-3, 2003, Thunderbird Hotel, Bloomington. Fee: $115 ($150 after March 17 or at the door). _____ Check here if you want to attend the Competent Person Training (must include an additional $35). Check here if you would like to receive an exam application. (Applications must be postmarked at least 15 days prior to the exam.) Check here if you would like to receive a study guide. Name Address City Zip Day Phone Employer Please enclose the appropriate fee. Make check payable to Minnesota AWWA. Mail this form and fee to Public Water Supply Unit, Minnesota Department of Health, 121 East Seventh Place, Suite 220, P. O. Box 64975, St. Paul, Minnesota 55164-0975. 7 CALENDAR Water Operator Training Minnesota Section, American Water Works Association *April 9-11, Northeast Waterworks *March 26-28, Southeast Waterworks Operators School, Best Western Apache, Operators School, Holiday Inn, InternaRochester. Contact Paul Halvorson, tional Falls. Contact Stew Thornley, 651/215-0771. 507/292-5193. *June 11-13, Central Waterworks *April 1-3, Metro Waterworks Operators School, Thunderbird Hotel, Operators School, Brainerd Lakes Area. Bloomington. Contact Stew Thornley, Contact Bill Spain, 320/654-5952. 651/215-0771. *April, Southwest Waterworks Operators School. Contact Mark Sweers, 507/389-5561. Minnesota Rural Water Association Contact Kyle Kedrowski, 1/800/367-6792. *March 4-6, Technical Conference, St. Cloud Civic Center. April 16, Operation & Maintenance, Elbow Lake American Water Works Association Teleconference March 13, Water Storage, Brooklyn Park, St. Paul, Duluth, Bemidji, North Mankato, and Grand Forks. Contact Stew Thornley, 651/215-0771. Minnesota Rural Water Association April 22, Wadena April 23, Monticello MRWA Training. for Non-Municipal Systems *Schools/meetings marked with an asterisk include a water certification exam. To be eligible to take a certification exam, applicants must have hands-on operations experience at a drinking water system. For an up-to-date list of events, check the training calendar on the MDH web site at: http://www.health.state.mn.us/divs/eh/water/einfo/wat_op_sched.html MDH Drinking Water Protection web page: http://www.health.state.mn.us/divs/eh/water Minnesota Department of Health 121 E. 7th Place Suite 220 P. O. Box 64975 St. Paul, Minnesota 55164-0975 ADDRESS SERVICE REQUESTED
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