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.
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.