2024 Consumer Confidence Report (CCR)

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Wyandotte Nation

2024 Consumer Confidence Report (CCR)

PWS ID: 062005883

Released: June 2025

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. The

Environmental Protection Agency (EPA) and Centers for Disease Control and Prevention (CDC)

guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other

microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).

Where does my water come from?

Your water comes from the Roubidoux Aquifer and is pumped through 3 groundwater wells. Two

of our wells are regulated under EPA Region 6, and we also receive water from a third well that

is regulated under the Oklahoma Department of Environmental Quality (ODEQ).

Source Water Assessment and its availability

The 1996 amendments to the Safe Drinking Water Act authorize a Source Water Assessment to

determine the susceptibility of a public drinking water supply to contamination. Potential sources

of contaminants regulated by the Safe Drinking Water Act are required to be inventoried during

the assessment process. The EPA Region 6 Source Water Protection Branch, in cooperation with

Wyandotte Nation conducted this assessment in September of 2008. Based on the following

factors, your water system was determined to have a Low susceptibility to contamination. The

physical integrity of the well, the characteristics of the hydrologic system around the well, the

characteristics of the contaminants inventoried and the likelihood of those contaminants to reach

the source of the drinking water supply all impact the susceptibility of the source to contamination.

A copy of this report is available at our water office for your review.

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, 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;

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) regulations establish limits for contaminants in

bottled water which must provide the same protection for public health.

How can I get involved?

You can assist the Wyandotte Nation Water Utilities Department and the community in protecting

our valuable water resources by conserving water usage and reporting broken water lines or

unusual activity near well houses, storage tanks or hydrants. For more information, please contact

our office at 918-678-6335.

Description of Water Treatment Process

Your water is treated by disinfection. Disinfection involves the addition of chlorine or other

disinfectant to kill dangerous bacteria and microorganisms that may be in the water. Disinfection

is considered to be one of the major public health advances of the 20th century.

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.

Fix 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/watersense for more information.

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. We are 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.

Exposure to lead in drinking water can cause serious health effects in all age groups. Infants and

children can have decreases in Intelligence Quotient (IQ) and attention span. Lead exposure can

lead to new learning and behavior problems or exacerbate existing learning and behavior

problems. The children of women who are exposed to lead before or during pregnancy can have

increased risk of these adverse health effects. Adults can have increased risks of heart disease,

high blood pressure, kidney or nervous system problems.

Service Line Inventory

In 2024, our water system was required to complete an inventory of service line materials to

determine whether any service lines connected to the distribution system are made of lead

material. The service line inventory is available upon request, please contact us for more

information.

Violations

Our water system did not incur any drinking water violations during the calendar year of 2024.

Water sampling results show no violations for EPA Well # 1 and 2, and no violations were incurred

from our ODEQ Well #3.

Water Quality Data Tables

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 were detected during the calendar year (2024) 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.

2024 Detected Regulated Contaminants

Highest

MCLG MCL,

Range

Detect In

Contaminants

TT, or

Your

MRDLG MRDL

Water Low High

Sample

Date

Violation

Typical Source

Decay of natural and manmade deposits. The EPA

considers 50 pCi/L to be the

level of concern for Beta

particles.

Radioactive Contaminants

Beta/photon

emitters

(pCi/L)

1.88

N/A

2021

Radium

(combined

0.72

N/A

2021

Erosion of natural deposits

226/228)

(pCi/L)

Secondary Contaminants.

(No Federal Maximum Contaminant Level (MCL) has been Established)

Sodium (NR)

(ppm)

N/A

2023

Naturally present in the

environment

4.0 0.30 Avg 0.01

0.55

2024

Water additive to control

growth of microbes

12.4

Disinfectants

Chlorine

(ppm)

< 4.0

Contaminants ALG

Your

# Samples

Range Sample

Exceeds

AL Water (90th

Exceeding

Low High Date

percentile)

Typical Source

Inorganic Contaminants (Lead and Copper)

Copper –

90th

percentile

(ppm)

Lead – 90th

percentile

(ppb)

1.3

0.05

ND 0.06

2022

Corrosion of

household

plumbing systems;

Erosion of natural

deposits

Corrosion of

household

plumbing systems;

Erosion of natural

deposits

The samples below were collected from the entry point of Well #3 (OK2005883) that is

regulated by the Oklahoma Department of Environment Quality (ODEQ) during the same period.

This well supplies water to our EPA regulated water system. The below contaminants were

detected.

Contaminants

MCLG

MRDLG

MCL,

TT, or

MRDL

Highest

Range

Detect In

Your Water Low High

Sample

Violation

Date

Typical Source

Radioactive Contaminants

Radium

(combined

226/228)

(pCi/L)

Gross Alpha,

excl. Radon

and U (pCi/L)

Gross Beta

Particle Activity

(pCi/L)

3.5

8/09/2023

Erosion of natural deposits

2.2

8/09/2023

Erosion of natural deposits

1.95

8/09/2023

Decay of natural and manmade deposits.

Inorganic Contaminants

Barium (ppm)

0.008

0.008 0.008 8/09/2023

Fluoride (ppm)

0.36

Inorganic

Contaminants Monitoring

90th

Range

Unit

(Lead and

Period Percentile (low/high)

Copper

Copper, Free

2020 2022

Lead

2020 2022

0.36 8/09/2023

Discharge of drilling

wastes; Discharge from

metal refineries; Erosion of

natural deposits

Natural deposits: Water

additive which promotes

strong teeth.

Sites

Violation Typical Source

over AL

0.06

ND –

0.100

ppm

1.3

Corrosion of household

plumbing systems; Erosion

of natural deposits

ppb

Corrosion of household

plumbing systems; Erosion

of natural deposits

RAA Sample

MPA

MPA Unit

RAA

Violation

Disinfectants

Unit Dates

Chlorine/Chlo

Water additive to control

7/1/24–

0.88

mg/L

0.6

mg/L

7/31/24

ramines

growth of microbes

Secondary Contaminants (Non-Health Based Contaminants) No Federal Maximum Contaminant Level

(MCL) has been Established.

Highest

Detect in Range

Sample

Contaminant

Typical Source

Your

(low/high) Date

Water

Sodium (mg/L)

8/09/2023 Naturally present in the environment

Unit Descriptions

Term

Definition

ppm

ppb

pCi/L

ppm: parts per million, or milligrams per liter (mg/L)

ppb: parts per billion, or micrograms per liter (µg/L)

pCi/L: picocuries per liter (a measure of radioactivity)

NA: Not applicable

ND: Not detected

Important Drinking Water Definitions

Term

RAA

MCLG

MCL

ALG

Definition

Running Annual Average: an average of sample results obtained over the most current

12 months and used to determine compliance with MCLs.

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.

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.

Treatment Technique: A required process intended to reduce the level of a contaminant

in drinking water.

Action Level: The concentration of a contaminant which, if exceeded, triggers treatment

or other requirements which a water system must follow.

Action Level Goal: The level of a contaminant in drinking water below which there is no

known or expected risk to health. ALGs allow for a margin of safety.

Not Regulated, but monitoring is highly recommended

Variances and

Exemptions

Variances and Exemptions: State or EPA permission not to meet an MCL or a treatment

technique under certain conditions.

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.

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

MRDL

MPA

Monitoring Period Average: An average of sample results obtained during a defined time

frame. Common examples of monitoring periods are monthly, quarterly, and yearly.

90th Percentile

90th Percentile: A value at which 90% of all samples collected tested at, or below this

value

For more information please contact:

Contact Name: Kathleen Welch

Address: 8 Turtle Drive

Wyandotte, OK 74370

Phone: 918-678-6335

Consumer Confidence Report – 2025 Covering Calendar Year – 2024

WYANDOTTE TRIBE OF OKLAHOMA OK2005883

This report is a snapshot of the quality of the water that we provided last year.

Included are the details about where your water comes from, what it contains, and

how it compares to Environmental Protection Agency (EPA) and state standards.

We are committed to providing you with information because informed customers

are our best allies.

For access to the WYANDOTTE TRIBE OF OKLAHOMA service line inventory,

or if you would like to be actively involved in the decision-making processes that

affect drinking water quality, please call WYANDOTTE TRIBE OF OKLAHOMA

at 918-678-2297.

Your water comes from 1 Ground Water Well(s):

Some people may be more vulnerable to contaminants in drinking water than the

general population. Immuno-compromised persons such as those 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/CDC guidelines

on appropriate means to lessen the risk of infection by Cryptosporidium and other

microbial contaminants are available from the Safe Drinking Water Hotline (800426-4791).

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 EPA’s

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. Please contact us to obtain

more information about a source water assessment and its availability.

Contaminants that may be present in source water before we treat it include:

Microbial contaminants, such as viruses and bacteria, which may come from

sewage treatment plants, septic systems, livestock operations and wildlife.

Inorganic contaminants, such as salts and metals, which can be naturallyoccurring or result from urban storm water 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

storm water run-off, agriculture, and residential users.

Radioactive contaminants, which can be naturally occurring or the result of mining

activity.

Organic contaminants, including synthetic and volatile organic chemicals, which

are by-products of industrial processes and petroleum production, and also come

from gas stations, urban storm water run-off, and septic systems.

In order to ensure that tap water is safe to drink, EPA prescribes regulations which

limits the amount of certain contaminants in water provided by public water

systems. We treat our water according to EPA’s regulations. Food and Drug

Administration regulations establish limits for contaminants in bottled water, which

must provide the same protection for public health.

Our water system is required to test a minimum of 1 samples per month in

accordance with the Total Coliform Rule for microbiological contaminants.

Coliform bacteria are usually harmless, but their presence in water can be an

indication of disease-causing bacteria. When coliform bacteria are found, special

follow-up tests are done to determine if harmful bacteria are present in the water

supply. If this limit is exceeded, the water supplier must notify the public.

Water Quality Data

The following tables list all of the drinking water contaminants which were

detected during the 2024 calendar year. The presence of these contaminants

does not necessarily indicate the water poses a health risk. Unless noted, the

data presented in this table is from the testing done January 1- December 31,

2024. The state requires us to monitor for certain contaminants less than once

per year because the concentrations of these contaminants are not expected to

vary significantly from year to year. Some of the data, though representative of

the water quality, is more than one year old.

Terms & Abbreviations

Maximum Contaminant Level Goal (MCLG): the “Goal” is the level of a

contaminant in drinking water below which there is no known or expected risk to

human health. MCLGs allow for a margin of safety.

Maximum Contaminant Level (MCL): the “Maximum Allowed” MCL is 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.

Secondary Maximum Contaminant Level (SMCL): recommended level for a

contaminant that is not regulated and has no MCL.

Action Level (AL): the concentration of a contaminant that, if exceeded, triggers

treatment or other requirements.

Treatment Technique (TT): a required process intended to reduce levels of a

contaminant in drinking water.

Maximum Residual Disinfectant Level (MRDL): 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.

Non-Detects (ND): lab analysis indicates that the contaminant is not present.

Parts per Million (ppm) or milligrams per liter (mg/l)

Parts per Billion (ppb) or micrograms per liter (µg/l)

Picocuries per Liter (pCi/L): a measure of the radioactivity in water.

Millirems per Year (mrem/yr): measure of radiation absorbed by the body.

Monitoring Period Average (MPA): An average of sample results obtained

during a defined time frame, common examples of monitoring periods are

monthly, quarterly and yearly.

Nephelometric Turbidity Unit (NTU): a measure of the clarity of water. Turbidity

in excess of 5 NTU is just noticeable to the average person. Turbidity is not

regulated for groundwater systems.

Running Annual Average (RAA): an average of sample results obtained over

the most current 12 months and used to determine compliance with MCLs.

Locational Running Annual Average (LRAA): Average of sample analytical

results for samples taken at a particular monitoring location during the previous

four calendar quarters.

Monitoring and Reporting (M/R): a violation for failure to conduct regular

monitoring of drinking water quality or to submit monitoring results in a timely

fashion.

Operational Evaluation Level (OEL): a report triggered by the disinfection byproducts rule.

Testing Results for: WYANDOTTE TRIBE OF OKLAHOMA

Please Note: Because of sampling schedules, results may be older than 1 year

Regulated Contaminants

Collection

Date

Highest

Value

Range

(low/high)

Unit

MCL

MCLG

BARIUM

8/9/2023

0.008

ppm

FLUORIDE

8/9/2023

0.36

ppm

Range (low/high)

Unit

Sites

Over AL

Lead and Copper

Monitoring

Period

90th

Percentile

Typical Source

Discharge of drilling wastes; Discharge from

metal refineries; Erosion of natural deposits.

Natural deposits; Water additive which

promotes strong teeth.

Typical Source

Corrosion of household plumbing systems;

Erosion of natural deposits; Leaching from wood

preservatives.

Corrosion of household plumbing systems;

LEAD

2020 - 2022

ppb

Erosion of natural deposits.

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. Your water system 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 wis h 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.

COPPER, FREE

2020 - 2022

0.06

Chlorine/Chloramines Maximum

Disinfection Level

07/01/2024 - 07/31/2024

Radiological

Contaminants

COMBINED

RADIUM (-226 &

-228)

GROSS ALPHA,

EXCL. RADON &

GROSS BETA

PARTICLE

ACTIVITY

0 - 0.1

ppm

1.3

MPA

MPA Units

RAA

RAA Units

0.88

MG/L

0.6

MG/L

Collection Date

Highest Value

Range

(low/high)

Unit

MCL

MCLG

Typical Source

8/9/2023

3.5

pCi/L

Erosion of natural

deposits

8/9/2023

2.2

pCi/L

Erosion of natural

deposits

8/9/2023

1.95

pCi/L

Decay of natural

and man-made

deposits

Collection Date

Highest Value

Range (low/high)

Unit

8/9/2023

MG/L

Secondary Contaminants-Non Health Based

Contaminants-No Federal Maximum

Contaminant Level (MCL) Established.

SODIUM

During the 2024 calendar year, we had the below noted violation(s) of drinking water regulations.

Compliance Period

Analyte

No Violations Occurred in the Calendar Year of 2024

Water System

Type

No Violations Occurred in the Calendar Year of 2024

Comments