HUGO TOWN OF 2025 Drinking Water Quality Report Covering Data For Calendar Year 2024

Public Water System ID: CO0137010 Esta es información importante. Si no la pueden leer, necesitan que alguien se la

We are pleased to present to you this year's water quality report. Our constant goal is to provide you with a safe and dependable supply of drinking water. Please contact SARA LANCASTER at 719-743-2485 with any questions or for public participation opportunities that may affect water quality.

General Information All 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 the 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 (1-800-426-4791) or by visiting epa.gov/ground-water-and- drinking-water. 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 of infections. These people should seek advice about drinking water from their health care providers. For more information about contaminants and potential health effects, or to receive a copy of the U.S. Environmental Protection Agency (EPA) and the U.S. Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and microbiological contaminants call the EPA Safe Drinking Water Hotline at (1-800-426-4791

Contaminant 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: viruses and bacteria that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife. Inorganic contaminants: salts and metals, which can be naturally-occurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming. Pesticides and herbicides: may come from a variety of sources, such as agriculture, urban storm water runoff, and residential uses.

HUGO TOWN OF, PWS ID: CO0137010

Radioactive contaminants: can be naturally occurring or be the result of oil and gas production and mining activities. Organic chemical contaminants: including synthetic and volatile organic chemicals, which are byproducts of industrial processes and petroleum production, and also may come from gas stations, urban storm water runoff, and septic systems. In order to ensure that tap water is safe to drink, the Colorado Department of Public Health and Environment prescribes regulations limiting the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration regulations establish limits for contaminants in bottled water that must provide the same protection for public

Lead in Drinking Water Lead can cause serious health effects in people of all ages, especially pregnant people, infants (both formula-fed and breastfed), and young children. Lead in drinking water is primarily from materials and parts used in service lines and in home plumbing. We are responsible for providing high quality drinking water and removing lead pipes but cannot control the variety of materials used in the plumbing in your home. Because lead levels may vary over time, lead exposure is possible even when your tap sampling results do not detect lead at one point in time. You can help protect yourself and your family by identifying and removing lead materials within your home plumbing and taking steps to reduce your family's risk. Using a filter, certified by an American National Standards Institute accredited certifier to reduce lead, is effective in reducing lead exposures. Follow the instructions provided with the filter to ensure the filter is used properly. Use only cold water for drinking, cooking, and making baby formula. Boiling water does not remove lead from water. Before using tap water for drinking, cooking, or making baby formula, flush your pipes for several minutes. You can do this by running your tap, taking a shower, doing laundry or a load of dishes. If you have a lead service line or galvanized requiring replacement service line, you may need to flush your pipes for a longer period. If you are concerned about lead in your water and wish to have your water tested, contact SARA LANCASTER at 719-743-2485. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available at epa.gov/safewater/lead. Service Line Inventory New state and federal laws require us to inventory all water service lines in our service area to classify the material. A service line is the underground pipe that carries water from the water main, likely in the street, into your home or building. If you would like to view a copy of our service line inventory or have questions about the material of your service line, contact SARA LANCASTER at 719-743-2485. Source Water Assessment and Protection (SWAP) The Colorado Department of Public Health and Environment may have provided us with a 2025 CCR Page 2 of 12

HUGO TOWN OF, PWS ID: CO0137010

Source Water Assessment Report for our water supply. For general information or to obtain a copy of the report please visit wqcdcompliance.com/ccr. The report is located under "Guidance: Source Water Assessment Reports". Search the table using our system name or ID, or by contacting SARA LANCASTER at 719-743-2485. The Source Water Assessment Report provides a screening-level evaluation of potential contamination that could occur. It does not mean that the contamination has or will occur. We can use this information to evaluate the need to improve our current water treatment capabilities and prepare for future contamination threats. This can help us ensure that quality finished water is delivered to your homes. In addition, the source water assessment results provide a starting point for developing a source water protection plan. Potential sources of contamination in our source water area are listed below. Please contact us to learn more about what you can do to help protect your drinking water sources, any questions about the Drinking Water Quality Report, to learn more about our system, or to attend scheduled public meetings. We want you, our valued customers, to be informed about the services we provide and the quality water we deliver to you every day.

Sources (Water Type - Source Type) EAST NO 1 WELL (Groundwater-Well) EAST NO 2 WELL (Groundwater-Well) WEST NO 7 WELL (Groundwater-Well) WEST NO 8 WELL (Groundwater-Well)

Potential Source(s) of Contamination

Commercial/Industrial/Transportation, Low Intensity Residential, Fallow, Small Grains, Pasture / Hay, Septic Systems, Road Miles

Terms and Abbreviations Maximum Contaminant Level (MCL) - The highest level of a contaminant allowed in drinking water. Treatment Technique (TT) - A required process intended to reduce the level of a contaminant in drinking water.

Health-Based - A violation of either a MCL or TT. Non-Health-Based - A violation that is not a MCL or TT.

Action Level (AL) - The concentration of a contaminant which, if exceeded, triggers treatment and other regulatory requirements. 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. 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. Maximum Residual Disinfectant Level Goal (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.

HUGO TOWN OF, PWS ID: CO0137010

Violation (No Abbreviation) - Failure to meet a Colorado Primary Drinking Water Regulation. Formal Enforcement Action (No Abbreviation) - Escalated action taken by the State (due to the risk to public health, or number or severity of violations) to bring a non- compliant water system back into compliance. Variance and Exemptions (V/E) - Department permission not to meet a MCL or treatment technique under certain conditions. Gross Alpha (No Abbreviation) - Gross alpha particle activity compliance value. It includes radium-226, but excludes radon 222, and uranium. Picocuries per liter (pCi/L) - Measure of the radioactivity in water. Nephelometric Turbidity Unit (NTU) - Measure of the clarity or cloudiness of water. Turbidity in excess of 5 NTU is just noticeable to the typical person. Compliance Value (No Abbreviation) - Single or calculated value used to determine if regulatory contaminant level (e.g. MCL) is met. Examples of calculated values are the 90th Percentile, Running Annual Average (RAA) and Locational Running Annual Average (LRAA Average (x-bar) - Typical value. Range (R) - Lowest value to the highest value. Sample Size (n) - Number or count of values (i.e. number of water samples collected Parts per million = Milligrams per liter (ppm = mg/L) - One part per million corresponds to one minute in two years or a single penny in $10,000. Parts per billion = Micrograms per liter (ppb = ug/L) - One part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000. Not Applicable (N/A) - Does not apply or not available. 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.

HUGO TOWN OF routinely monitors for contaminants in your drinking water according to Federal and State laws. The following table(s) show all detections found in the period of January 1 to December 31, 2024 unless otherwise noted. The State of Colorado 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, or the system is not considered vulnerable to this type of contamination. Therefore, some of our data, though representative, may be more than one-year-old. Violations and Formal Enforcement Actions, if any, are reported in the next section of this report.

Note: Only detected contaminants sampled within the last 5 years appear in this report. If

HUGO TOWN OF, PWS ID: CO0137010

HUGO TOWN OF, PWS ID: CO0137010

Disinfectants Sampled in the Distribution System TT Requirement: At least 95% of samples per period (month or quarter) must be at least 0.2 ppm OR If sample size is less than 40 no more than 1 sample is below 0.2 ppm Typical Sources: Water additive used to control microbes

December, 2024 Lowest period percentage of samples meeting TT requirement: 100%

Lead and Copper Sampled in the Distribution System Lead and Copper Individual Sample Results 90th SampleSample SamplePercentileSizeMeasurePercentileSites Range Low - High

Lead and Copper Sampled in the Distribution System Lead and Copper Individual Sample Results 90th Unit ofSample Sample Percentile SizeMeasureSites

90th Percentile Above Exceedance AL

systems; Erosion of natural deposits

household plumbing systems; Erosion of natural deposits

Disinfection Byproducts Sampled in the Distribution System

Inorganic Contaminants Sampled at the Entry Point to the Distribution System

SampleUnit ofMCLMCLG SizeMeasure

which promotes strong teeth; discharge from

fertilizer and aluminum factories

fertilizer use; leaching from septic tanks, sewage; erosion

Inorganic Contaminants Sampled at the Entry Point to the Distribution System

deposits Nitrate: 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 you should ask advice from your health care provider.

Secondary Contaminants** **Secondary standards are non-enforceable guidelines for contaminants that may cause cosmetic effects (such as skin, or tooth discoloration) or aesthetic effects (such as taste, odor, or color) in drinking water

Violations, Significant Deficiencies, and Formal Enforcement Actions

Maximum contaminant level (MCL) violations: Test results for this contaminant show that the level was too high for the time period shown. Please read the information shown below about potential health effects for vulnerable populations. This is likely the same violation that we told you about in a past notice. We are evaluating, or we already completed an evaluation, to find the best way to reduce or remove the contaminant. If the solution will take an extended period of time, we will keep you updatedwith quarterly notices. Treatment technique (TT) violations: We failed to complete an action that could affect water quality. Please read the information shown below about potential health effects for vulnerable populations. This is likely the same violation that we told you about in a past notice. We were required to meet a minimum operation/treatment standard, we were required to make upgrades to our system, or we were required to evaluate our system for potential sanitary defects, and we failed to do so in the time period shown below. If the solution will take an extended period of time, we will keep you updated with quarterly notices. DescriptionCompliance

Additional Violation Information

Please share this information with all the 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. Describe the steps taken to resolve the violation(s), and the anticipated resolution date: An incomplete LSL Inventory was submitted on October 16, 2024. A more complete LSL Inventory was submitted on March 11, 2025. We continue to work on identifying all service line materials by December 2025.

These violations do not usually mean that there was a problem with the water quality. If there had been, we would have notified you immediately. We missed collecting a sample (water quality is unknown), we reported the sample result after the due date, or we did not complete a report/notice by the required date. Description

FAILURE TO NOTIFY THE PUBLIC/CONSUMERS

Additional Violation Information

Please share this information with all the 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.

Describesteps taken to resolve the violation(s), and the anticipated resolution date: A notice for "Did Not Submit a Lead the Service Line Inventory" was mailed on December 2, 2024. It was submitted to the CDPHE portal on January 21, 2025.

An incomplete LSL Inventory was submitted on October 16, 2024. A more complete LSL Inventory was submitted on March 11, 2025. We continue to work on identifying all service line materials by December 2025. The Consumer Confidence (Water Quality) Report was mailed on June 25, 2024. The Certificate of Delivery was uploaded to the CDPHE portal on June 25, 2024. The Consumer Confidence (Water Quality) Report was uploaded to the CDPHE Portal on March 11, 2025.

Significant Deficiencies A situation, practice, or condition that may potentially result in drinking water quality that poses an unacceptable risk to public health and welfare and/or may potentially introduce contamination into the drinking water.

Deficiency Explanation and Steps

S031 - SOURCE LOCATION; Supplier has located a source in a location that causes it to be impacted by contamination.; S030 - SOURCE CONSTRUCTION; Supplier's groundwater does not provide adequate protection of source water.;

The connection to this well has been

Roof, vents and hatch have been sealed.Submitted to CDPHE on 3/6/25, waiting

HUGO TOWN OF, PWS ID: CO0137010