2022 Annual Water Quality Report
Town of Thermopolis
PWS WY5600056




Is my water safe?

We are pleased to present this year`s Annual Water Quality Report (Consumer Confidence Report) as required by the Safe Drinking Water Act (SDWA). This report is designed to provide details about where your water comes from, what it contains, and how it compares to standards set by regulatory agencies. This report is a snapshot of last year`s water quality. We are committed to providing you with information because informed customers are our best allies.

Do I need to take special precautions?

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

Where does my water come from?

Our water source is three wells and one source from the Big Hom River. Our wells draw water from the Alluvial formation.

Source water assessment and its availability

Our source water assessment is available at the Town Hall.

Why are there contaminants in my drinking water?

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 (EPA) Safe Drinking Water


Hotline (800-426-4791). The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity:
microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems agricultural livestock operations, and wildlife· inorganic contaminants, such as salts and metals which can be naturally occurring or result from urban stormwater
runoff, industrial, or domestic wastewater discharges, oil and gas production, mining, or farming; pesticides and herbicides which may come from a variety of source 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; and radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities. In order to ensure that tap water is safe to drink, EPA
prescribes regulations that limit the amount of certain contaminants in water provided by public water systems. Food and Drug Administration (FDA regulation. establish limits for contaminants in bottled water which must provide the same protection for public health.

How can I get involved?

If you have any questions or concerns about your water, please attend any of our regularly scheduled City Council meetings. The meetings are held on the first and third Tuesday of every month at the Town Hall.

Description of Water Treatment Process

Your water is treated in a "treatment train" (a series of processes applied in a sequence) that includes coagulation, flocculation, sedimentation, filtration, and disinfection. Coagulation removes dirt and other particles suspended in the source water by adding chemicals (coagulants) to form tiny sticky particles called "floe," which attract the dirt particles. Flocculation (the formation of larger floes from smaller floes) is achieved using gentle, constant mixing. The heavy particles settle naturally out of the water in a sedimentation basin. The clear water then moves to the filtration process where the water passes through sand, gravel, charcoal or other filters that remove even smaller particles. A small amount of chlorine or other disinfection method is used to kill bacteria and other microorganisms (viruses, cysts, etc.) that may be in the water before water is stored and distributed to homes and businesses in the community.

Water Conservation Tips

Did you know that the average U.S. household uses approximately 400 gallons of water per day or 100 gallons per person per day? Luckily, there are many low-cost and no-cost ways to conserve water. Small changes can make a big difference - try one today and soon it will become second nature.


• Take short showers - a 5-minute shower uses 4 to 5 gallons of water compared to up to 50 gallons for a bath.
• Shut off water while brushing your teeth, washing your hair and shaving and save up to 500 gallons a month.
• Use a water-efficient showerhead. They`re inexpensive, easy to install, and can save you up to 750 gallons a month.
• Run your clothes washer and dishwasher only when they are full. You can save up to 1,000 gallons a month.
• Water plants only when necessary.
• , f ix leaky toilets and faucets. Faucet washers are inexpensive and take only a few minutes to replace. To check your toilet for a leak, place a few drops of food coloring in the tank and wait. If it seeps into the toilet bowl without flushing, you have a leak. Fixing it or replacing it with a new, more efficient model can save up to 1,000 gallons a month .
• Adjust sprinklers so only your lawn is watered. Apply water only as fast as the soil can absorb it and during the cooler parts of the day to reduce evaporation.
• Teach your kids about water conservation to ensure a future generation that uses water wisely. Make it a family effort to reduce next month`s water bill!
• Visit www.epa.gov./ water sense for more information.

Cross Connection Control Survey

The purpose of this survey is to determine whether a cross-connection may exist at your home or business. A cross connection is an unprotected or improper connection to a public water distribution system that may cause contamination or pollution to enter the system. We are responsible for enforcing cross-connection control regulations and insuring that no contaminants can, under any flow conditions, enter the distribution system. If you have any of the devices
listed below, please contact us so that we can discuss the issue, and if needed, survey your connection and assist you in isolating it if that is necessary.

• Boiler/ Radiant heater (water heaters not included)
• Underground lawn sprinkler system
• Pool or hot tub (whirlpool tubs not included)
• Additional source(s) of water on the property
• Decorative pond
• Watering trough

Source Water Protection Tips

Protection of drinking water is everyone`s responsibility. You can help protect your community`s drinking water source in several ways:

• Eliminate excess use of lawn and garden fertilizers and pesticides - they contain hazardous chemicals that can reach your drinking water source.
• Pick up after your pets.
• If you have your own septic system, properly maintain your system to reduce leaching to water sources or consider connecting to a public water system.


• Dispose of chemicals properly; take used motor oil to a recycling center.
• Volunteer in your community. Find a watershed or wellhead protection organization in your community and volunteer to help. If there are no active groups, consider starting one. Use EPA`s Adopt Your Watershed to locate groups in your community or visit the Watershed Information Network`s How to Start a Watershed Team.
• Organize a storm drain stenciling project with your local government or water supplier. Stencil a message next to the street drain reminding people "Dump No Waste - Drains to River" or "Protect Your Water." Produce and distribute a flyer for households to remind residents that storm drains dump directly into your local water body.

Additional Information for Lead

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. Town of Thermopolis is responsible for providing high quality drinking water but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.




Water Quality Data Table
In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of contaminants in water provided by public water systems. The table below lists all of the drinking water contaminants that we detected during the calendar year of this report.
Although many more contaminants were tested, only those substances listed below were found in your water. All sources of drinking water contain some naturally occurring contaminants. At low levels, these substances are generally not harmful in our drinking water. Removing all contaminants would be extremely expensive, and in most cases, would not provide increased protection of public health. A few naturally occurring minerals may actually improve the taste of drinking water and have nutritional value at low levels. Unless otherwise noted, the data presented in this table is from testing done in the calendar year of the report. The EPA or the State requires us to monitor for certain contaminants less than once per year because the concentrations of these contaminants do not vary significantly from year to year, or the system is not considered vulnerable to this type of contamination. As such, some of our data, though representative, may be more than one year old. In this table you will find terms and abbreviations that might not be familiar to you. To help you better understand these terms, we have provided the definitions below the table.





:·
Com:.minants
MCLG
Ur
MRDLG
MCL.
IT, or
MRDL Dett ln Your Water Range

Sampe,
Date


Violation


Typical Source


Low

High
Disinfectants & Dl Infection By-Products
(There is convincing evidence that addition of l! disinfectant is necessary for control of microbial contaminants
Chlorine (as Cl2) (ppm)
Total
Free

4

4


1.29
1.35


0.62
0.66


1.29
1.35

2022

No

Water additive used to control microbes
Haloacetic Acids (HAA5) (ppb)
Running Avg.
NA
60

19.75
11
28
2022
No By-product of drinking water chlorination
TTHMs [Total Trihalomethanes] (ppb)
Running Avg.

NA

80


57

24

81

2022

No
By-product of drinking water disinfection
Total Organic Carbon (% Removal) NA TT 37.87 NA NA 2022 No Naturally present in the environment
inorganic Contaminants


Fluoride (ppm)

4

4

0.2

ND

0.2

2022

No Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories

Nitrate [measured as Nitrogen] (ppm)

10

10

0.28

ND

0.28

2022

No Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits


Selenium (ppb)

50

50

1

ND

1

2022

No Discharge from petroleum and metal refineries; Erosion of natural deposits; Discharge from mines
Sodium (optional) (ppm) NA 62.6
ND 62.6 2022 No Erosion of natural deposits; Leaching
Microbiological Contaminates
Total Coliform (TCR) (positive samples/month)
0
0
0
ND
ND
2022
No Naturally present in the environment
Turbidity (NTU) NA 0.3 100 NA NA 2022 No Soil runoff
100% of the samples were below the TT value of 0.3. A value less than 95% constitutes a TT violation. The highest single measurement was 0.200. Any measurement in excess of 1 is a violation unless otherwise approved by the state.
`· l f;
Radioactive Contaminants
Uranium (ug/L) 0 30 0.3 NA NA 2019 No Erosion of natural deposits







Undetected Contaminants
The following contaminants were monitored for, but not detected, in your water.



` ;

Contaminants MCLG
01`
MRDLG MCI.., IJT 01` MRDL
Yonr
Water

V iol11{ion •·

Typical source
1,1,I-Trichloroethane (ppb) 200 200 ND No Discharge from metal degreasing sites and other factories

1,1,2-Trichloroethane (ppb)
3
5
ND
No Discharge from industrial chemical factories

1,1-Dichloroethylene (ppb)
7
7 ND
No Discharge from industrial chemical factories
1,2,4-Trichlorobenzene (ppb) 70 70 ND No Discharge from textile-finishing factories

1,2-Dichloroethane (ppb)
0
5
ND
No Discharge from industrial chemical factories

1,2-Dichloropropane (ppb)
0 5 ND
No Discharge from industrial chemical factories
2,4,5-TP (Silvex) (ppb) 50 50 ND No Residue of banned herbicide
2,4-D (ppb) 70 70 ND No Runoff from herbicide used on row crops
Alachlor (ppb) 0 2 ND No Runoff from herbicide used on row crops
Alpha emitters (pCi/L) 0 15 ND No Erosion of natural deposits

Antimony (ppb)
6
6
ND
No Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder; test addition.

Arsenic (ppb)
0
10
ND
No Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes
Atrazine (ppb) 3 3 ND No Runoff from herbicide used on row crops


- M LG
or
MRDLG MC
1T or
MRDL
Your Water

Violation

Typical Source

Contaminants

Barium (ppm)
2
2
ND
No Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits

Benzene (ppb)
0
5
ND
No Discharge from factories; Leaching from gas storage tanks and landfills

Benzo(a)pyrene (ppt)
0
200
ND
No Leaching from linings of water storage tanks and distribution lines

Beryllium (ppb)
4
4
ND
No Discharge from metal refineries and coal- burning factories; Discharge from
electrical, aerospace, and defense industries


Cadmium (ppb)

5

5

ND

No Corrosion of galvanized pipes; Erosion of natural deposits; Discharge from metal refineries; runoff from waste batteries and paints

Carbofuran (ppb)
40
40
ND
No Leaching of soil fumigant used on rice and alfalfa

Carbon Tetrachloride (ppb)
0
5
ND
No Discharge from chemical plants and other industrial activities
Chlordane (ppb) 0 2 ND No Residue of ban ned termiticide
Chlorobenzene (monochlorobenzene) (ppb)
100
100
ND
No Discharge from chem ical and agricultural chemical factories

Chromium (ppb)
100
100
ND
No Discharge from steel and pulp mills; Erosion of natural deposits

Cyanide (ppb)
200
200
ND
No Discharge from plastic and fertilizer factories; Discharge from steel/metal factories

Dalapon (ppb)
200
200
ND
No Runoff from herbicide used on rights of way
Di (2-ethylhexyl) adipate (ppb) 400 400 ND No Discharge from chemical factories
Di (2-ethylhexyl) phthalate (ppb)
0
6
ND
No Discharge from rubber and chemical factories
Dibromochloropropane (DBCP) (ppt)
0
200
ND
No Runoff/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards

Dichloromethane (ppb)
0
5
ND
No Discharge from pharmaceutical and chemical factories

Dinoseb (ppb)
7
7
ND
No Runoff from herbicide used on soybeans and vegetables
Diquat (ppb) 20 20 ND No Runoff from herbicide use
Endothall (ppb) 100 100 ND No Runoff from herbicide use
Endrin (ppb) 2 2 ND No Residue of banned insecticide
Ethy !benzene (ppb) 700 700 ND No Discharge from petroleum refineries
Ethylene dibromide (ppt) 0 50 ND No Discharge from petroleum refineries




Contaminant

Typical Source













Unit Desciriptions
Term Definition
ug/L ug/L : Number of micrograms of substance i n one liter of water
ppm ppm: parts per million, or milligrams per liter (mg/L)
ppb ppb: parts per billion, or micrograms per liter (µg/L)
ppt ppt: parts per trillion, or nanograms per liter
ppq ppq: parts per quadrillion, or picograms per liter
pCi/L pCi/L: picocuries per liter (a measure ofradioactivity)

NTU NTU: Nephelometric Turbidity Units. Turbidity is a measure of the cloudiness of the water. We monitor it because it is a good indicator of the effectiveness of our filtration system.
positive samples/month positive samples/month: Number of samples taken monthly that were found to be positive
NA NA: not applicable
ND ND: Not detected
NR NR: Monitoring not required but recommended.



Important Drinking Water Definitions



















Important Drinking Water Definition`s
Term Definition

MRDLG MRDLG: Maximum residual disinfection level goal. The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

MRDL 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.
MNR MNR: Monitored Not Regulated
MPL MPL: State Assigned Maximum Permissible Level
IFor more information plea e contact:
Contact Name: Earnie Slagle or Chris Seilaff Address: P.O. Box 603
Thermopolis, WY 82443
Phone: (307) 864-2658