Consumer Water Quality Report for 2024- Horizon Six System
Consumer Confidence Report for Calendar Year 2024
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https://espanol.epa.gov/espanol/recursos-e-informacion-sobre-el-ccr-para-los-consumidores
Please Note: The blue texts indicate that it is instruction or explanation, please do not include within the report. If sections or some language do not apply to your public water system, you may remove it from the report or indicate that it is not applicable for this report.
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Public Water System ID Number |
Public Water System Name |
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AZ04-08-122 |
Horizon Six Improvement District |
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Contact Name and Title |
Phone Number |
E-mail Address |
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April Van Buren, Water Operator Sr |
928-727-5294 |
MCWater@mohave.gov |
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We want our valued customers to be informed about their water quality. If you would like to learn more about public participation or to attend any of our regularly scheduled meetings, please contact April Van Buren at 928-727-5294 for additional opportunity and meeting dates and times. You may also visit our website at www.Mohave.gov. |
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This is our annual report about your drinking water quality, also called a Consumer Confidence Report or CCR. Having clean, safe water is one of the most important services we provide, and we want you to be as informed as possible about your drinking water.
This report provides you with information about where you water comes from, results of sampling that we have performed, and any issues or violations that happened over the previous year. This water quality report includes a table with the most recent water testing results within the last 5 years. The table shows if different germs and chemicals were in a safe range and met EPA's health standards. Look for the column in the table called "TT or MCL violation," to see if your utility found unsafe levels of any germs or chemicals.
You may also find real-time information about our water system at the Arizona Department of Environmental Quality (ADEQ) Drinking Water Watch website at https://azsdwis.azdeq.gov/DWW_EXT/
Drinking Water Sources
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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. |
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Our water source(s): |
PWS# AZ04-08-022 <Lake Havasu City> provides Horizon Six Improvement District a consecutive connection source of water. Lake Havasu City groundwater supply draws water from the Colorado River Aquifer. |
Consecutive Connection Sources
Our public water system receives some or all of its finished water from one or more wholesale systems by means of a direct connection or through the distribution system of one or more consecutive systems. We have included a summary of regulated contaminants detected in the purchased water from other water systems in a separate table in this report.
PWS # AZ04-08-022, Lake Havasu City provides us a consecutive connection source of water.
Source Water Assessment
Making the water safe to drink starts by protecting the place it comes from. We work with state scientists at the Arizona
Department of Environmental Quality (ADEQ) to examine water at its source to look for possible pollutants. This is called a Source Water Assessment (SWA). This water system did not receive a SWA because the system was either inactive at the time or the system did not exist.
Drinking Water Contaminants
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Contaminants are any physical, chemical, biological, or radiological substance or matter in water. 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. Organic Chemical Contaminants: including synthetic and volatile organic chemicals, which are by-products of industrial domestic wastewater discharges, oil and gas production, mining, or farming. Inorganic Contaminants: such as salts and metals, processes and petroleum production, and can also come which can occur naturally in the soil or groundwater or from gas stations, urban stormwater runoff, and septic may result from urban stormwater runoff, industrial or systems. Radioactive Contaminants: which can be naturally occurring or be the result of oil and gas production and mining activities. Pesticides and herbicides: which may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses. |
Vulnerable Population
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. In order to ensure that tap water is safe to drink, the Environmental Protection Agency (EPA) prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water which must provide the same protection for public health.
Some people may be more vulnerable to contaminants in drinking water than the general population. Immunocompromised 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.
More information about contaminants, their potential health effects, and the appropriate means to lessen the risk can be obtained by calling the Environmental Protection Agency's Safe Drinking Water Hotline at 800-426-4791 or visiting the website epa.gov/safewater.
Definitions
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Maximum Contaminant Level (MCL): 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.
Maximum Contaminant Level Goal (MCLG): 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.
Treatment Technique (TT): A required process intended to reduce the level of a contaminant in drinking water.
Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
Maximum residual disinfectant level goal or MRDLG: 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 (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.
Level 1 Assessment: 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 very detailed study of the water system to identify potential problems and determine (if possible) why an E. coli MCL violation has occurred and/or why total coliform bacteria have been found in our water system on multiple occasions. |
Lead Informational Statement
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.
Horizon Six Improvement District is responsible for providing high quality drinking water and removing lead pipes, but cannot control the variety of materials used in plumbing components in your home. You share the responsibility for protecting yourself and your family from the lead in your home plumbing. You can take responsibility by identifying and removing lead materials within your home plumbing and taking steps to reduce your family's risk.
Before drinking tap water, flush your pipes for several minutes by running your tap, taking a shower, doing laundry or a load of dishes. You can also use a filter certified by an American National Standards Institute accredited certifier to reduce lead in drinking water.
To address lead in drinking water, public water systems were required to develop and maintain an inventory of service line materials by Oct 16, 2024. Developing an inventory and identifying the location of lead service lines (LSL) is the first step for beginning LSL replacement and protecting public health. The lead service inventory may be viewed at the Mohave County Improvement Districts office, located at 3715 Sunshine Drive in Kingman Arizona, or by calling the office at 928757-0914. Please contact us if you would like more information about the inventory or any lead sampling that has been done.
If you are concerned about lead in your water and wish to have your water tested, contact Horizon Six Improvement District at 928-757-0914. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available at http://www.epa.gov/safewater/lead.
Water Quality Data – Regulated Contaminants
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The following are terms related to water quality data presented in this table: Not Applicable (NA): Sampling was not completed because it was not required by regulation. Not Detected (ND or <): Not detectable at reporting limit. Minimum Reporting Limit (MRL): The smallest concentration of a substance that can be reliably measured by a given analytical method. Millirems per year (MREM): A measure of radiation absorbed by the body. Million fibers per liter (MFL): Measure of asbestos fibers. ppm: Parts per million or Milligrams per liter (mg/L), equal to 1/1000 of a gram. |
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Microbiological (RTCR)
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TT Violation Y or N |
Number of Positive Samples |
Positive Sample(s) Month & Year |
MCL |
MCLG |
Likely Source of Contamination |
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E. Coli |
N |
0 |
N/A |
0 |
0 |
Human and animal fecal waste |
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Disinfectants |
MCL Violation Y or N |
Running Annual Average (RAA) |
Range of All Samples (Low-High) |
MRDL |
MRDLG |
Sample Month & Year |
Likely Source of Contamination |
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Chlorine (ppm) |
N |
0.51 |
.09-1.0 |
4 |
4 |
12/2024 |
Water additive used to control microbes |
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Disinfection By-Products |
MCL Violation Y or N |
Running Annual Average (RAA) OR Highest Level Detected |
Range of All Samples (Low-High) |
MCL |
MCLG |
Sample Month & Year |
Likely Source of Contamination |
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Haloacetic Acids (HAA5) (ppb) |
N |
11.7 |
9.2-15.0 |
60 |
N/A |
10/2024 |
Byproduct of drinking water disinfection |
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Total Trihalomethanes (TTHM) (ppb) |
N |
62.2 |
42-76 |
80 |
N/A |
10/2024 |
Byproduct of drinking water disinfection |
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(include if any TTHM samples were above 80ppb) 1 Total Trihalomethanes (TTHMs) Trihalomethanes are a group of chemicals that can form when organic matter in water is treated with disinfectants such as chlorine. Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous systems, and may have an increased risk of getting cancer. (include relevant health effects language for each contaminant over the MCL) |
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Lead & Copper |
MCL Violation Y or N |
90th Percentile |
Number of Samples Exceeding AL |
AL |
ALG |
Sample Month & Year |
Likely Source of Contamination |
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Copper (ppm) |
N |
.09 |
0 |
1.3 |
1.3 |
09/2023 |
Corrosion of household plumbing systems; erosion of natural deposits |
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Lead (ppb) |
N |
4.0 |
0 |
15 |
0 |
09/2023 |
Corrosion of household plumbing systems; erosion of natural deposits |
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Source Water Quality Data <Lake Havasu City> - Regulated Contaminants |
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Radionuclides |
MCL Violation Y or N |
Running Annual Average (RAA) OR Highest Level Detected |
Range of All Samples (Low-High) |
MCL |
MCLG |
Sample Month & Year |
Likely Source of Contamination |
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Uranium (ug/L) |
N |
13.5 |
13.5 |
30 |
0 |
01/2020 |
Erosion of natural deposits |
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Inorganic Chemicals (IOC) |
MCL Violation Y or N |
Running Annual Average (RAA) OR Highest Level Detected |
Range of All Samples (Low-High) |
MCL |
MCLG |
Sample Month & Year |
Likely Source of Contamination |
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Arsenic1 (ppb) |
N |
3.73 |
3.3-4.3 |
10 |
0 |
10/2024 |
Erosion of natural deposits, runoff from orchards, runoff from glass and electronics production wastes |
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Barium (ppm) |
N |
0.040 |
0.040 |
2 |
2 |
01/2023 |
Discharge of drilling wastes; discharge from metal refineries; Erosion of natural deposits |
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Fluoride (ppm) |
N |
0.78 |
0.78 |
4 |
4 |
01/2023 |
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories |
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Nickel (ppm) |
N |
<.01 |
<.01 |
N/A |
N/A |
01/2023 |
Erosion of natural deposits; Discharge from refineries and factories; Runoff from landfills and cropland. |
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Nitrate2 (ppm) |
N |
1.7 |
1.7 |
10 |
10 |
01/2024 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
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Selenium (ppb) |
N |
2.0 |
2.0 |
50 |
50 |
01/2023 |
Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines |
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Sodium (ppm) |
N |
150 |
150 |
N/A |
N/A |
01/2023 |
Erosion of natural deposits |
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1 Arsenic is a mineral known to cause cancer in humans at high concentration and is linked to other health effects, such as skin damage and circulatory problems. While your drinking water meets EPA's standard for arsenic, it does contain low levels of arsenic. EPA's standard balances the current understanding of arsenic's possible health effects against the costs of removing arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems.
2 Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause “blue baby syndrome.” Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant, and detected nitrate levels are above 5 ppm, you should ask advice from your health care provider.
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All contaminants listed below were tested for and were NOT found in our source water. These contaminants are considered Non-Detect or not present:
Synthetic Organic Compounds (Last tested 01/2023): 2,4-D, 2,4,5-TP (a.k.a. Silvex), Acrylamide, Alachlor, Atrazine,
Benzo (a) pyrene (PAH), Carbofuran, Chlordane, Dalapon, Di (2-ethylhexyl) adipate, Di (2-ethylhexyl) phthalate, Dibromochloropropane, Dinoseb, Diquat, Dioxin [a.k.a. 2,3,7,8-TCDD], Endothall, Endrin, Epichlorohydrin, Ethylene dibromide, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene, Hexachlorocyclo pentadiene, Lindane, Methoxychlor, Oxamyl (a.k.a. Vydate), PCBs (Polychlorinated biphenyls), Pentachlorophenol, Picloram, Simazine, Toxaphene
Volatile Organic Compounds (Last tested 01/2024): Benzene, Carbon tetrachloride, Chlorobenzene, o-
Dichlorobenzene, p-Dichlorobenzene, 1,2-Dichloroethane, 1,1-Dichloroethylene, cis-1,2 Dichloroethylene, trans-1,2-
Dichloroethylene, Dichloromethane, 1,2-Dichloropropane, Ethylbenzene, Styrene, Tetrachloroethylene, 1,2,4Trichlorobenzene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Trichloroethylene, Toluene, Vinyl Chloride, Xylenes
Inorganic Chemicals (Last tested 01/2023): Antimony, Asbestos, Beryllium, Cadmium, Chromium, Cyanide, Mercury, Nitrite (last tested 01/2023), Selenium, Thallium
Secondary Drinking Water Guidelines
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Water Hardness
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Units |
Average |
Range of All Samples (Low-High) |
Secondary Guideline* |
Description |
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Total Hardness |
Grains Per Gallon |
19.23 |
18.5 – 20.1 |
NA |
The presence of minerals, such as calcium and magnesium, which occur naturally through contact with source water |
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Total Dissolved Solids (TDS) |
PPM |
776 |
749 - 814 |
500 |
The measurement of all dissolved solids in a water |
*Non-Enforceable Guidelines Recommended by EPA
The report for PWS # AZ04-08-022 <Lake Havasu City> may also be reviewed on the City’s web site: www.lhcaz.gov
Violation Summary
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Violation Type |
Explanation, Health Effects |
Time Period |
Corrective Actions |
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Public Notice Violation |
Public Notice for missed RTCR testing Nov 2022 |
November 2022 |
Included on the CCR to make customers aware of violation. |
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Please share this information with other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail. |
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Unresolved significant deficiencies identified by ADEQ
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Date identified |
Description |
Status |
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NONE |
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For more information about these reports and what is required in them, visit EPA’s website at: https://www.epa.gov/ccr/ccr-information-consumers