Union Bridge Water Quality Report

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2019 Annual Drinking Water Quality Report
(Union Bridge Consumer Confidence Report)

Annual Drinking Water Quality Report

Town of Union Bridge


Annual Water Quality Report for the period of January 1 to December 31, 2019

For more information regarding this report, contact Dawn Metcalf, Clerk Treasurer at 410.775.2711 or to provide input, attend

a Mayor and Council meeting on the forth Monday of every month at Town Hall, 104 West Locust Street.

This report is intended to provide you with important information about your drinking water and the efforts made by the water system

to provide safe drinking water

Este informe contiente informacion muy importante sobre el agua que usted

Bebe. Traduzcalo o hable con alguien que lo entienda bien.

Town of Union Bridge is ground water under the direct influence of surface water. A source water assessment was performed by MDE and is available on their website, mde.maryland.gov

Source Water Information

SWA = Source Water Assessment

Source Water Name                                                            Type of Water                  Report Status                                                           Location

UNION BRIDGE TOWN HALL NOPERMIT                                GU                                  GU Y                                       T OF UNION BRIDGE 104 WEST LOCUST ST

WHYTE ST WELL (FIRE DEPT) CL940608 GUCL940608        GU                                         Y                                      T OF UNION BRIDGE APPROX. 50 FT S OF LOCUST ST

- 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 which limit the amount of certain contaminants in water provided by public water

systems. 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.

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/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).

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 we 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.

2019 Regulated Contaminants Detected

Lead and Copper


Action Level Goal (ALG): 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.

Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

Lead and Copper      Date Sampled      MCL      Action Level (AL      90th Percentile      # Sites Overall      Units      Lead and Copper           Likely Source of Contamination

Copper                        06/05/2018          1.3               1.3                         0.29                            0                  ppm             Copper               Erosion of natural deposits; Leaching

                                                                                                                                                                                                                        from wood preservatives; Corrosion of

                                                                                                                                                                                                                        household plumbing systems.

Lead                           06/05/2018            0                  15                         6.2                              0                  ppb                Lead                 Corrosion of household plumbing

                                                                                                                                                                                                                        systems; Erosion of natural deposits.

Water Quality Test Results

Definitions: The following tables contain scientific terms and measures, some of which may require explanation.

Avg: Regulatory compliance with some MCLs are based on running annual average of monthly samples.

Maximum Contaminant Level or 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

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

Maximum Contaminant Level Goal or 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

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 and/or why total coliform bacteria have been found in our water system on multiple occasions.

Maximum residual disinfectant level or 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 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.

na: not applicable.

Mrem : millirems per year (a measure of radiation absorbed by the body)

ppb: micrograms per liter or parts per billion - or one ounce in 7,350,000 gallons of water.

ppm: milligrams per liter or parts per million - or one ounce in 7,350 gallons of water.

Treatment Technique or TT: A required process intended to reduce the level of a contaminant in drinking water.

Regulated Contaminants

Disinfectants and Disinfection By-Products 

                                                                     Collection Date    Highest Level Detected    Range of Levels Detected           MCLG              MCL     Units    Violation   Likely Source of Contamination

Chlorine                                                         2019                        1.6                            1.4 - 1.6               MRDLG = 4 MRDL       4        ppm        N            Water additive used to                                                                                                                                                                                                                                                       control microbes.

Haloacetic Acids (HAA5)                              2019                         3                               0 - 4.7                No goal for the total    60      ppb         N            By-product of drinking                                                                                                                                                                                                                                                       water disinfection.

Total Trihalomethanes (TTHM)                    2019                         39                            17.5 - 56             No goal for the total    80       ppb         N           By-product of drinking                                                                                                                                                                                                                                                       water disinfection.

Inorganic Contaminants                      Collection Date    Highest Level Detected    Range of Levels Detected            MCLG             MCL     Units    Violation   Likely Source of Contamination

Barium                                                       08/14/2018                 0.037                         0.037 - 0.037                       2                 2        ppm         N          Discharge of drilling                                                                                                                                                                                                                                                           wastes; Discharge from

                                                                                                                                                                                                                                               metal refineries; Erosion                                                                                                                                                                                                                                                  of natural deposits.

Nitrate [measured as

Nitrogen] - 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.                                                     2019                       6                             3.6 - 6.14                     10           10       ppm          N          Runoff from fertilizer use;                                                                                                                                                                                                                                                  Leaching from septic                                                                                                                                                                                                                                                        tanks, sewage; Erosion                                                                                                                                                                                                                                                    of natural deposits.


                                                                  Limit (Treatment Technique)              Level Detected                   Violation                                   Likely Source of Contamination

Highest single measurement                                     1NTU                                      0.19 NTU                            N                                            Soil runoff.


Lowest monthly % meeting limit                              0.3 NTU                                        100%                               N                                            Soil runoff.

Information Statement: Turbidity is a measurement of the cloudiness of the water caused by suspended particles. We monitor it because it is a good indicator of water quality and the effectiveness of our filtration

Total Organic Carbon

The percentage of Total Organic Carbon (TOC) removal was measured each month and the system met all TOC removal requirements set, unless a TOC violation is noted in the violations section.