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Joint Powers Board Water System
Receives National Safety Award
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Upcoming Certification Exam Dates
December 2, Moorhead
March 10, St. Cloud
March 25, Rochester
April 8, Bloomington
April 15, Two Harbors
April, Southwest Minnesota
June 10, Deerwood
See calendar on back page for more details
Winter 2004-05
Volume Twelve/3
Inside:
Matt Poythress and Kelly Browning of the Joint Powers Board Water
System (comprising Albertville, St. Michael, and Hanover) accept the
American Water Works Association (AWWA) 2004 Safety Award from
AWWA past president Marley Price. Minnesota AWWA Safety
Committee Chair Bill Anderl had posted a call for applicants on the
section’s web site, and three Class 1 systems (10 employees or fewer)
submitted a nomination form and supplemental information sheet. The
committee selected one candidate and forwarded the nomination to
AWWA, which selected the Joint Powers Board Water System, operated
by Veolia Water/U. S. Filter, as the winner in the Class 1 category.
“This award is truly a reflection of the water system’s use of safety as
a foundation for excellence in reliability, productivity, quality and more,”
said Anderl. “Congratulations to all the water system employees for
their existing safety efforts.”
Life is not about how fast you run, or how high you
climb, but how well you bounce.
Staples Opens New Softening Plant
MDH/EPA Collaborate on Emergency Response Workshop
Mark Sloan Joins MDH as Certification Officer
Images from the Minnesota AWWA Conference
Optimizing Phosphate Treatment to Minimize Lead/Copper Seasonal Variations
By Lih-in Rezania
Do you know phosphate treatment is
used by more than 40 percent of the
community water systems in Minnesota?
Since the Lead and Copper Rule (LCR)
took effect in 1991, more than 160
community water systems in Minnesota have
installed corrosion control treatments to
reduce lead and/or copper levels. This has
brought the total number of systems using
phosphate treatments to approximately 400
and made phosphate addition—used to improve
aesthetic qualities and to reduce corrosion in
the distribution system—the third most used
treatment in drinking water, after fluoridation
and chlorination. With careful selection of
the product and dosages, and a routine water
quality monitoring program, water systems
can optimize their phosphate treatments to
ensure that corrosion in the distribution
system and the lead/copper levels at their
customers’ taps are minimized at all times.
How does phosphate work to control
lead/copper?
Phosphate inhibitors work for lead/copper
corrosion control by forming protective
coatings or films onto interior pipe walls, which
prevent water from having direct contact with
the piping materials. Among the various
phosphate products, orthophosphate products
work best for lead/copper corrosion control.
The higher the orthophosphate residual, the
greater the protective coating, which should
mean lower lead/copper levels at
consumers’ taps.
Blended phosphate products that
contain at least 50 percent orthophosphate
also work well, but they need to be fed at
higher dosages. Polyphosphate products work
best for iron/manganese sequestration or
red/black water control. When used at very
low dosages, they may help to control lead/
copper through the process of reversion
(to orthophosphate); at high dosages, they
could adversely increase the lead/copper
levels, particularly copper. After more than a
decade of lead/copper corrosion control
using phosphates, we’ve established that
treatment success relies on consistency and
continuity, and the rule-of-thumb minimum
orthophosphate residual level to be maintained
in the water distribution system, at all times,
is 1 milligram per litre (mg/L). For some
systems, higher residuals may be necessary,
but only a handful of systems in Minnesota
are maintaining orthophosphate residuals
above 2.0 mg/L.
Do you know you’re more likely to exceed lead/copper action levels
in winter and spring than in summer and fall?
In 1994, many systems that had successfully passed the first round of the
tap monitoring exceeded the lead/copper action level during the second-round
testing. The explanation is accepted as a seasonal-variation phenomenon
caused by winter heating in cold-climate regions, a hypothesis backed by
investigative studies conducted by MDH at that time. Recent observations
of seasonal variations among systems with corrosion control treatments led
us to reexamine that group of systems and our earlier hypothesis. We found
half of the systems that exceeded the lead/copper action level in winter/
spring 1994 also were treating with a phosphate product, most likely a
polyphosphate. This leads us to believe that the exceedances in 1994 may
be more closely related to phosphate treatment and the conditions of the
protective coating/films in the water distribution systems, at the time of tap
monitoring, than simply the heating effect.
How do seasonal variations affect systems with corrosion control
treatment?
The LCR requires water systems in reduced monitoring cycles to conduct
the tap monitoring between the months of June and September. As the
number of systems phased into reduced annual and triennial monitoring cycles
has increased, concerns for seasonal variation and its potential to cause lead/
copper exceedances have faded. The only systems that continue to conduct
tap monitoring in six-month monitoring cycles are those that have installed a
corrosion control treatment and are still in the process of optimizing the
treatment. It is from them that the seasonal variation pattern was observed.
Our first observation led to the question, “Why does the 90th percentile
lead/copper level tend to be higher in the spring than in the fall, while the
same treatment is being used and maintained?” Our second observation
comes from systems that have been deemed to have optimized corrosion
control treatment and are now in reduced monitoring cycles, conducting their
tap monitoring only in the summer months. We asked, “Why does the 90th
percentile lead/copper level, for most systems, appear to have been further
lowered while similar or, in many cases, lower phosphate residuals are being
maintained in the distribution systems?”
On the other hand, MDH also encountered several exceedances from
systems operating under supposedly “optimal” corrosion control treatment
conditions. We asked, “Why did the re-exceedances occur mostly in June
and rarely in August or September?” Observation on phosphate residuals
maintained by all systems with corrosion control treatments lead to our fourth
question: “Why do phosphate residuals in most systems appear to be lower in
winter than in summer, when the same feed rates have been maintained?”
Most water systems pace their phosphate feed system with the water
pumpage, at a fixed target dosage rate. Bear in mind that water pumpage
varies with demand and seasons, but the interior surface area of the
pipelines remains the same, regardless of the seasons. So, during the
seasons of low water usage, a smaller quantity of the phosphate inhibitor is
pumped through the water distribution system, causing the protective film/
coating to wear off over time. (In some cases when the integrity of the
coating/film is severely compromised, the coating starts to slough off from
the pipe walls.) The conditions of the protective coatings/films continue to
worsen until spring, when water demand starts to increase again. As more
water and a corrosion inhibitor are pumped through the distribution system,
the damaged protective coating/film undergoes a period of repair and reaches
its healthiest state by the end of summer or early fall. This is how seasonal
variation in lead/copper levels occur.
Continued on page 3
2
Optimizing Phosphate Treatment to Minimize Lead/Copper Seasonal Variations—Continued from page 2
How do you know the phosphate coating/film in your
water distribution system is intact?
The LCR requires water systems with a corrosion control
program to monitor water quality parameters (WQPs)
related to their corrosion control treatment. When phosphate
treatment is used, the required parameters to be monitored
are pH, orthophosphate, and total-phosphates, at the entry
point and at distribution system locations. The WQPs
monitoring collects useful information for utilities to assess
the state of the protective coating/film in their water
distribution systems. Being able to understand and interpret
the WQP monitoring results will enable a system to make
timely adjustments to its corrosion-control treatment and to
ensure the consumers are protected from lead/copper
contaminations at all times.
Have you ever wondered why you’ve received WQPs
results showing both the ortho- and total-phosphate residuals
well above the dosages that were fed into the system? Have
you noticed that the WQP monitoring results vary within the
distributions system and between seasons? When the
protective coating/film is healthy and intact, the range of
variation on residuals is minimal. Total phosphate residuals
in the distribution system will be at similar levels as the
dosage at the water treatment plant. On the other hand,
when the protective coating/film is damaged or compromised,
the range of variation is widened, meaning a higher
percentage of the WQPs results will have residuals below
and/or above the dosage rates. If the phosphate residual
monitoring results were to be arranged from low to high
(for a set monitoring period) and the values charted on the
y-axis, the chart will take a similar shape as the curve
shown in the chart. If you were to group the results for
lower water usage and high usage seasons, and chart them
separately, you are likely to produce a chart similar to
the one below.
Can You Optimize the Treatment to Minimize Lead/
Copper Seasonal Variations?
Now that we understand how seasonal variations in lead/
copper levels occur among systems with corrosion control
treatment, we know the objective is to make sure that the
protective phosphate coating/film is kept as healthy as can
be throughout the distribution system, including during the
low water usage season. You may simply set your
phosphate dosage at a higher level so that the target
minimum residual level is met at all times. You may also
adjust your phosphate feed rate seasonally. You may want
to set up an in-house phosphate monitoring program and pay
close attention to the occurrences of high and low values to
enable you to take action and make timely adjustments to
your corrosion control treatment.
The fix is simple, but it requires devotion to corrosion
control treatment and to public health protection. With 13
years of experience in lead/copper corrosion-control
treatment, we are confident that our Minnesota community
water systems will continue to strive for excellence in
furthering public health protection from lead/copper
contamination in drinking water.
Minnesota AWWA Conference
Distribution System Phosphate Residual
High Usage Season vs Low Usage Season
2.8
High Season
Low Season
Ortho-Phosphate (mg/L)
2.4
American Water Works Association past president Marley Price
attended the 88th Annual Minnesota Section Conference in
Owatonna. At left, Price presents Jarrod Christen of Detroit
Lakes with the George Warren Fuller Award; at right, Al Lamm
of New Ulm receives the L. N. Thompson Award from Price.
High residuals
due to sloughing
2
1.6
1.2
0.8
Low residuals due to demand
from the pipelines
0.4
0
10
20
30
40
50
60
70
80
90
100
Percentile
Please note that during the low water usage season, a
higher percentage of the results show residuals above or
below the dose rates. Incidents of low residuals indicate that
phosphate is taken up by piping materials while the high
residuals indicate fragments of phosphate coating sloughing
off the pipe walls.
Outgoing section chair Doug Rovang (left) presents Ken Seurer
of Lakeville with the Operator Meritorious Service Award;
A guest speaker belts out the Auctioneer Song with the Alfalpha
Males, the entertainment for the Wednesday night reception
presented by the Minnesota Associates Council.
3
MDH/EPA Collaborate on Emergency Response Plan Workshop
Public water suppliers have been conducting assessments of the
vulnerability of their systems to a terrorist attack or other acts intended
to disrupt their ability to provide a safe and reliable supply of drinking
water. The assessments for systems serving a population of 3,301 to
49,999 had to be completed by June 30, 2004. Within six months of the
submission of the vulnerability assessment, systems must certify to the
U. S. Environmental Protection Agency (EPA) that they have
developed or updated an emergency response plan (ERP) to address
the results of their assessment.
The Minnesota Department of Health’s Section of Drinking Water
Protection, in conjunction with the EPA, co-hosted a workshop on
“Developing and Preparing Emergency Response Plans for Drinking
Water Utilities” on September 8. The workshop included a discussion Instructor Larry Hornby of the Texas Engineering
of the regulatory requirements for utilities to update their ERP and a Extension Service talks about emergency response
plans at the September 8 workshop.
review of EPA’s Response Protocol Tool Box.
Additional information on water security is available at the EPA web site at http://cfpub.epa.gov/safewater/watersecurity/
index.cfm. The Response Protocol Tool Box can be downloaded from http://cfpub.epa.gov/safewater/watersecurity/
home.cfm?program_id=8#response_toolbox.
One of the participants in the workshop was MDH district engineer Bill Anderl, who wrote the following:
Are you ready for water contamination threats/incidents?
Drinking water utilities have been busy looking at the vulnerability and security improvements over the past few years.
What many water systems have discovered is that no matter what physical improvements have been made, it may be very
difficult to prevent an intentional attack on the drinking water system. In the event of a malevolent act, the water utility must
have an emergency response plan (ERP) that can be followed. This plan will provide information on eight core elements.
1. System specific information—Basic information that needs to be available to responders, process flow diagrams,
distribution maps, system operating procedures, ‘as built’ plans, etc.
2. Utility roles and responsibilities—Who will be the designated emergency response manager, reachable 24/7, for the
water utility and be responsible for the initial threat evaluation and emergency response?
3. Communication procedures—An emergency communications plan needs to be developed. Who will be notified and
when/how will any public/media notification be carried out?
4. Personnel safety—Evacuation procedures, assembly areas, protective shelters, and emergency equipment must be
prepared and ready. Protecting the health and safety of utility workers/emergency personnel is critical during an
emergency.
5. Alternate water sources—Alternate source of water needs to be identified for both the short-term and long-term
outages. Back-up electrical power sources should also be identified.
6. Replacement equipment/supplies—Mutual-aid agreements with other utilities are essential components to
emergency plans. Utility equipment inventories and commercial sources should be in the plan.
7. Property protection—“Lock-down” procedures/emergency security perimeters need to be identified to protect
property in some emergencies.
8. Water sampling and monitoring—Special water sampling and monitoring needs that may arise during an event need
to be identified. MDH Lab resources will be available to assist in the analysis of samples, and MDH district
engineers will assist in the collection and transport of samples to the lab. The Drinking Water Protection Section will
assist the utility during an emergency in the public health response and recovery process, as necessary.
The actual organization of the ERP is up to the utility. The ERP template within the Security Emergency Management
System (SEMS) software can be used by small and medium water systems with local modifications. The plan should be kept
in at least two locations and updated annually. Utility employees need to be trained in emergency response, and the plan
should be tested in both table-top exercises and full-scale practice drills. Coordination with all agencies that will assist the
water utility in any type of emergency response is essential.
The emergency communications plan is probably the most important part of the overall ERP. In the event of a credible
contamination threat, the utility will need to consult with MDH to determine whether or not the situation warrants public
notification. A decision process will determine the appropriate notification to be issued (e.g., do not drink, do not use, or boil
water). Information of alternate water supplies will also need to be provided to the public. Decisions on who will provide and
pay for the alternate water supply will also have to be made.
Are you really ready? Have you trained your staff? Is your next exercise planned and did you do the annual review of the
ERP? I hope you have answered yes to all three.
4
Staples Sticks with Softening
The plant design is essentially
The city of Staples, a
the
same although the process now
community of approximately 3,300
includes
recarbonation for pH
residents in central Minnesota,
adjustment
by carbon dioxide. The
opened its new water-treatment
treatment
begins
with an induced
plant to visitors on Friday,
draft
aerator
to
remove
the trace
August 27, 2004. Mayor Bruce
organics.
Hydrated
lime,
soda ash,
Nelsen, flanked by Representative
and
sodium
aluminate
are then
Mary Ellen Otremba and Steve
added
to
soften
the
water.
The
Wenzel, the state director of U. S.
raw-water
quality
is
approximately
Department of Agriculture
250 parts per million (ppm) of hard(USDA) Rural Development, did
ness and is softened to 100 ppm.
the ceremonial ribbon cutting
From the aerator and the clarialthough the plant has been on-line
fier,
the water passes through the
since early June.
recarbonation
basin and to the two
Wenzel praised the project,
filter
beds,
which
contain 18 inches
which included two new wells and
of
anthracite
and
12 inches of
Mayor
Bruce
Nelsen
cuts
the
ribbon
for
the
new
water
a reservoir, as a “good example of
plant.
At
left
is
Steve
Wenzel
of
USDA
Rural
Development;
silica
sand
over
12
inches
of supa partnership between federal,
at
right
is
Mary
Ellen
Otremba
of
the
Minnesota
House
of
port
gravel.
A
Leopold
underdrain
state, and local units of
government.” The funding came Representatives. Naeem Qureshi of Progressive system brings the water to the new
from a $1.39 million grant and loan Consulting Engineers is between Nelsen and Otremba. 350,000-gallon ground reservoir.
Ammonia, to form chloramines, and fluoride for dental
from USDA Rural Development, a small cities grant of
protection
are added to the water as three high-service pumps
$600,000 from the Minnesota Department of Employment
send
the
water
into the distribution system.
and Economic Development, and a below-market-rate loan
of $1.4 million through the state’s Drinking Water Revolving
Loan fund. The bid for the project was $2.963 million
“Now we can meet demand in a shorter
compared to the final construction cost of $2.866 million.
amount of time and still have a cushion.”
The total project cost—including land acquisition, engineering and administrative fees, and relocation costs—was $3.391
million.
Progressive Consulting Engineers (PCE) of Brooklyn
Center, Minnesota, worked with the city to obtain financing
for the project and designed the new plant. PCE president
Naeem Qureshi says that this could be one of the last
lime-softening plants constructed.
“Most cities are going to iron and manganese plants,”
Qureshi says, noting that softening, combined with the
pH adjustment, will result in the removal of iron and
manganese.
Staples residents, however, had become accustomed to
softened water, a feature the city wanted to keep while also
addressing other aesthetic contaminants.
The new plant has three high-service pumps with a capacity of
500 gallons per minute. At the far left is the backwash pump.
The lime-softening plant replaced a similar facility that had
been built as a Works Progress Administration project in 1938.
The old plant was showing its age with some of the
equipment severely corroded. “I don’t know how it held
together,” said operator Gary Thorman, who added that the
new facility and wells will have greater capacity “so that we
don’t have to run it as long. Now we can meet demand in a
shorter amount of time and still have a cushion.”
Along with the previous plant, two wells were abandoned.
A third was kept and serves as a backup to the two new
wells, each capable of producing 500 gallons per minute
(gpm), that were drilled in conjunction with the new plant.
Thorman noted that the combined capacity of the three wells
at the old plant was 450 gpm.
The plant contains two gravity filters with sand and anthracite.
5
Waterline
PWS Profile
Published quarterly by the
Drinking Water Protection Section,
Minnesota Department of Health
Certification Officer Mark Sloan
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 are available at:
http://www.health.state.mn.us/divs/eh/water/
newsletters.htm
Subdividing Systems Will Not
Eliminate Community Designation
Housing subdivisions, condominiums, and townhouses with
15 or more service connections or living units intended for
year-round residence are considered community water
supplies and subject to applicable U. S. EPA and MDH
drinking-water rules.
Subdividing the water system serving these types of
residential facilities in such a manner that 14 or fewer units
are served will not eliminate the community water supply
designation as long as the total project or development has 15
or more connections/units and is under the same ownership
or cooperative association. The only exception would be if
each single family dwelling is served by its own well.
Questions may be directed to Dick Clark at 651-215-0747.
Mark Sloan is a new certification officer in Drinking Water
Protection and will be working with Cindy Cook in helping to
train and certify water operators in Minnesota. Mark has 13
years experience as a water operator. He has worked on
general maintenance on distribution systems, operated a limesoftening water treatment plant, and served as the utility
supervisor for water and sewer operations for the city of
Richfield. He also worked for G. M. E. Consulting Engineers.
Mark has given presentations at water-operator training
sessions as well as to city councils. He also has experience
in construction inspection and materials testing. Mark
shares a home with his younger brother and two cats in the
Cleveland neighborhood in north Minneapolis. He also has a
getaway home in Deerwood, Minnesota.
Long Term 1 Enhanced Surface Water Treatment Rule
Beginning January 1, 2005, surface water systems serving fewer than 10,000 people must comply with the applicable
provisions of the Long Term 1 Enhanced Surface Water Treatment Rule (LT1ESWTR). The rule builds upon the
requirements of the Surface Water Treatment Rule, tightens the turbidity standards, and requires individual filter monitoring
and Cryptosporidium removal, as described below:
New, strengthened turbidity standards for the combined filter effluent
1) Less than or equal to 0.3 nephelometric turbidity units (NTU) in at least 95 percent of measurements
taken each month.
2) Turbidity must not exceed 1.0 NTU at anytime.
Continuous turbidity monitoring on individual filter effluent
1) Turbidity must be recorded every 15 minutes and records must be maintained for 3 years.
2) In case of a turbidimeter malfunction, grab sampling must be conducted every four hours with a return
to continuous monitoring within 14 days of the equipment failure.
3) Incidents of threshold turbidity exceedance(s), based on two consecutive recordings taken 15 minutes
apart, must be reported for:
i) turbidity values greater than 1.0 NTU.
ii) turbidity values greater than 1.0 NTU, at the same filter, for three months in a row.
iii) turbidity values greater than 2.0 NTU, at the same filter, for two months in a row.
Achievement of 2-log (99 percent) Cryptosporidium removal in lieu of filter performance
Systems must comply with the new turbidity standards and comply with individual filter effluent
monitoring requirements and the follow-up activities.
Questions concerning the LT1ESWTR may be directed to Lih-in Rezania at 651-215-0763.
6
Spring 2005 Schools
The 2005 Metro Waterworks Operators School will be held from Wednesday,
April 6 through Friday, April 8 at the Thunderbird Hotel in Bloomington. The
certification exams will be held on Friday afternoon, and former professional
wrestler Baron Von Raschke will be the featured speaker at the breakfast that
morning. Participants in the school will receive 16 credit hours for their attendance.
The registration for the school is $125 ($160 after March 25 or at the door).
Other spring schools include:
• Southeast School, March 23-25, Best Western Apache, Rochester
• Southwest School, April (exact date and location to be announced)
• Northeast School, April 13-15, Superior Shores Resort, Two Harbors
• Central School, June 8-10 at Ruttger’s Bay Lake Lodge near Deerwood
Clawmaster Baron Von Raschke
MRWA Conference
2005 Teleconferences
The 2005 Minnesota Rural Water
Association (MRWA) Technical
Conference will be held at the
St. Cloud Civic Center from
Tuesday, March 8 through Thursday,
March 10.
For more information, contact the
MRWA office at 218-685-5197 or via
e-mail at [email protected].
The American Water Works Association has set Thursday, March 10 and
Thursday, November 3 as the dates for its 2005 teleconferences. The topics will be
Water Quality in Distribution Systems and Emerging Technologies. 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, Lake Superior
College in Duluth, and South Central Technical College in North Mankato.
Participants will receive 4 contact hours. All AWWA members will receive registration information in the mail.
A registration form for the Metro and Southeast schools as well as the March 10
teleconference is below. The Spring 2005 Waterline will have the entire Metro School
agenda with a registration form that will include the other three-day spring schools.
REGISTRATION FORM FOR TELECONFERENCE AND SPRING SCHOOLS
You may combine 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 Quality in Distribution Systems or Emerging Technologies, March 10, 2005.
Fee: $65 ($85 after March 3 or at the door) for St. Paul, Brooklyn Park, and Duluth sites; $55 ($75 after March 3 or at
the door) for North Mankato (no lunch served at this site); $65 for Grand Forks site until March 3 (no late registrations
accepted for this site).
Check the location you wish to attend:
____ St. Paul
____ Brooklyn Park
____ Grand Forks
____ Duluth
____ North Mankato
Southeast School, March 23-25, 2005, Best Western Apache, Rochester. Fee: $135 ($145 at the door).
Metro School, April 6-8, 2005, Thunderbird Hotel, Bloomington. Fee: $125 ($160 after March 25 or at the door).
_____ Check here if you would like to receive an exam application. (Applications must be submitted at least 15 days prior
to the exam.)
_____ Check here if you would like to receive an exam study guide (general version).
_____ Check here if you would like to receive an exam study guide specific to the Class D exam.
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
*November 30-December 2,
Northwest Water Operators School,
Courtyard by Marriott, Moorhead.
Contact Stew Thornley, 651-215-0771.
*March 23-25, Southeast Water
Operators School, Best Western
Apache, Rochester. Contact Paul
Halvorson, 507-292-5193.
*April
6-8,
Metro
Water
Operators School, Thunderbird Hotel,
Bloomington. Contact Stew Thornley,
651-215-0771.
*April, Southwest Water Operators
School. Contact Mark Sweers,
507-389-5561.
*April 13-15, Northeast Water
Operators School, Superior Shores
Resort, Two Harbors. Contact Stew
Thornley, 651-215-0771.
*June 8-10, Central Water Operators
School, Ruttger’s Bay Lake Lodge,
Deerwood.
Contact Lyle Stai,
320-212-8590.
American Water Works Association Teleconference
March 10, Water Quality in
Distribution Systems or Emerging
Technologies, Brooklyn Park, St. Paul,
Duluth, North Mankato, and Grand
Forks, N. D. Contact Stew Thornley,
651-215-0771.
Minnesota Rural Water Association
Contact Kyle Kedrowski, 800-367-6792.
December 8, Winter Operation &
Maintenance, Slayton.
*March 8-10, Technical Conference,
St. Cloud Civic Center.
April 13, Operation & Maintenance,
Elbow Lake.
MRWA Training for
Non-Municipal Systems
March 9, St. Cloud
April 27, Park Rapids
*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, see the training calendar on the MDH web site at:
http://www.health.state.mn.us/divs/eh/water/wateroperator/trng/wat_op_sched.html
MDH Drinking Water Protection web page:http://www.health.state.mn.us/divs/eh/water
Presort Standard
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PAID
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St. Paul, MN
Environmental Health Division
121 E. 7th Place Suite 220
P. O. Box 64975
St. Paul, Minnesota 55164-0975
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