2017 Consumer Confidence Report Data
LAKE MILLS WATERWORKS, PWS ID: 12801085

Water System Information

If you would like to know more about the information contained in this report, please contact Paul Hermanson or Harold E Dunkleberger at (920) 648-4026.

All violations listed in this CCR have been addressed and have either corrected or are being addressed promptly to ensure safe drinking water.

Opportunity for input on decisions affecting your water quality

Public works Board meetings are held the second Tuesday of each month at 7 p.m. at the City Hall. Meeting start times are subject to change. All meetings are broadcast live on the local access channel.

Health Information

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency's safe drinking water hotline (800-426-4791).

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune systems disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by cryptosporidium and other microbial contaminants are available from the Environmental Protection Agency's safe drinking water hotline (800-426-4791).

Source(s) of Water

Source ID	Source	Depth (in feet)	Status
4	Groundwater	820	Active
5	Groundwater	828	Active
6	Groundwater	822	Active

To obtain a summary of the source water assessment please contact: Paul Hermanson or Harold Dunkleberger at (920) 648-4026.

Educational Information

The sources of drinking water, both tap water and bottled water, include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Contaminants that may be present in source water include:

• Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife.
• Inorganic contaminants, such as salts and metals, which can be naturally- occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining or farming.
• Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff and residential uses.
• Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff and septic systems.
• Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.

In order to ensure that tap water is safe to drink, EPA prescribes regulations that limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water, which shall provide the same protection for public health.

Definitions

Term	Definition
AL	Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
Level 1 Assessment	A Level 1 assessment is a study of the water system to identify potential problems and determine, if possible, why total coliform bacteria have been found in our water system.
Level 2 Assessment	A Level 2 assessment is a very detailed study of the water system to identify potential problems and determine, if possible, why an E. coli MCL violation has occurred or why total coliform bacteria have been found in our water system, or both, on multiple occasions.
MCL	Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
MCLG	Maximum Contaminant Level Goal: The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
MFL	million fibers per liter
MRDL	Maximum residual disinfectant level: The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
MRDLG	Maximum residual disinfectant level goal: The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
mrem/year	millirems per year (a measure of radiation absorbed by the body)
NTU	Nephelometric Turbidity Units
pCi/l	picocuries per liter (a measure of radioactivity)
ppm	parts per million, or milligrams per liter (mg/l)
ppb	parts per billion, or micrograms per liter (ug/l)
ppt	parts per trillion, or nanograms per liter
ppq	parts per quadrillion, or picograms per liter
TCR	Total Coliform Rule
TT	Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water.

Detected Contaminants

Your water was tested for many contaminants last year. We are allowed to monitor for some contaminants less frequently than once a year. The following tables list only those contaminants which were detected in your water. If a contaminant was detected last year, it will appear in the following tables without a sample date. If the contaminant was not monitored last year, but was detected within the last 5 years, it will appear in the tables below along with the sample date.

Disinfection Byproducts

Contaminant (units)	Site	MCL	MCLG	Level Found	Range	Sample Date (if prior to 2017)	Violation	Typical Source of Contaminant
HAA5 (ppb)	D-2	60	60	3	3		No	By-product of drinking water chlorination
TTHM (ppb)	D-3	80	0	6.8	6.8		No	By-product of drinking water chlorination

Inorganic Contaminants

Contaminant (units)	Site	MCL	MCLG	Level Found	Range	Sample Date (if prior to 2017)	Violation	Typical Source of Contaminant
BARIUM (ppm)		2	2	0.100	0.069 - 0.100		No	Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits
FLUORIDE (ppm)		4	4	0.8	0.5 - 0.8		No	Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories
NICKEL (ppb)		100		0.6000	0.5400 - 0.6000		No	Nickel occurs naturally in soils, ground water and surface waters and is often used in electroplating, stainless steel and alloy products.
SODIUM (ppm)		n/a	n/a	5.10	4.20 - 5.10		No	n/a

 

Contaminant (units)	Action Level	MCLG	90th Percentile Level Found	# of Results	Sample Date (if prior to 2017)	Violation	Typical Source of Contaminant
COPPER (ppm)	AL=1.3	1.3	1.3000	4 of 40 results were above the action level.		No	Corrosion of household plumbing systems; Erosion of natural deposits; Leaching from wood preservatives
LEAD (ppb)	AL=15	0	18.00	7 of 40 results were above the action level.		No	Corrosion of household plumbing systems; Erosion of natural deposits

Radioactive Contaminants

Contaminant (units)	Site	MCL	MCLG	Level Found	Range	Sample Date (if prior to 2017)	Violation	Typical Source of Contaminant
GROSS ALPHA, EXCL. R & U (pCi/l)		15	0	10.2	5.9 - 10.2		No	Erosion of natural deposits
RADIUM, (226 + 228) (pCi/l)		5	0	4.9	3.7 - 6.5		Yes, Ongoing	Erosion of natural deposits
GROSS ALPHA, INCL. R & U (n/a)		n/a	n/a	10.2	5.9 - 10.2		No	Erosion of natural deposits
COMBINED URANIUM (ug/l)		30	0	0.8	0.8 - 0.8		No	Erosion of natural deposits

Unregulated Contaminants

 

Contaminant (units)	Level Found	Range	Sample Date (if prior to 2017)
SULFATE (ppm)	11.00	11.00

Health effects for any contaminants with MCL violations/Action Level Exceedances

Contaminant	Health Effects
COPPER	Copper is an essential nutrient, but some people who drink water containing copper in excess of the action level over a relatively short amount of time could experience gastrointestinal distress. Some people who drink water containing copper in excess of the action level over many years could suffer liver or kidney damage. People with Wilsons Disease should consult their personal doctor.
LEAD	Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental development. Children could show slight deficits in attention span and learning abilities. Adults who drink this water over many years could develop kidney problems or high blood pressure.
RADIUM, (226 + 228)	Some people who drink water containing radium 226 or 228 in excess of the MCL over many years may have an increased risk of getting cancer.

Additional Health Information

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. Lake Mills Waterworks is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at www.epa.gov/safewater/lead.

Corrective Actions Taken

Response to the violation regarding Ra-226 and Ra-228: In April 2018 LML&W entered into a Consent Order with the DNR to address the MCL exceedance level at well #4. Under the terms of this CO, LML&W has begun an investigation to identify and mitigate radium levels. Additionally, LML&W will continue to provide public notice about the situation and progress on the investigation and mitigation project.

Other Compliance

Monitoring Violations

Description	Contaminant Group	Sample Location	Compliance Period Beginning	Compliance Period Ending
WQP M/R Initial/Follow/Routine	Pbcu_Rule	6	1/1/2017	6/30/2017
WQP M/R Initial/Follow/Routine	Pbcu_Rule	Distribution System	1/1/2017	6/30/2017
WQP M/R Initial/Follow/Routine	Pbcu_Rule	4	1/1/2017	6/30/2017
WQP M/R Initial/Follow/Routine	Pbcu_Rule	5	1/1/2017	6/30/2017
PBCU M/R Tap Follow/Routine	Lead and Copper	Distribution System	7/1/2017	12/31/2017

 

Actions Taken

Regarding the failure to complete requirements of the Lead/Copper Public Education program: LML&W failed to file the required report on education activities by the deadline of December 31. The report was filed in February. The violation included only the failure to report. LML&W conducted all required activities of the education program. LML&W has put safeguards into place to ensure the report is filed as required.

Lead Consumer Notice

During the year, we failed to provide lead results to persons served at the sites that were tested as required by the Lead and Copper Rule.

Other Drinking Water Regulations Violations

Description of Violation	Date of Violation	Date Violation Resolved
Failure to complete requirements of the Lead/Copper Public Education Program	1/1/2017	2/13/2017

Actions Taken

Regarding failing to provide water test results to residents: LML&W had provided results only to residents in locations that exceeded the lead and copper MCL. All residents providing samples will now be informed of the results. If results do not exceed MCL information will be mailed or emailed. For locations where the MCL is exceeded, residents will be informed by phone or in person.