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2018 Annual Drinking Water Quality Report St. Martins by the Bay PWSID #MD0230008 In compliance with Safe Drinking Water Act amendments by Congress of 1996 and subsequent Federal and State regulations, St. Marins by the Bay is pleased to provide this annual water quality report for calendar year 2017. St. Martins by the Bay routinely monitors for contaminants in vi drinking water. For more information on the source of your water and the significant potential sources of contamination, contact the Maryland Wate Supply Program at the Maryland Department of the Environment at (410) 537-3714.
Is my water safe? We are very pleased to provide you with this year's Annual Quality Water Report. This repon is designed to inform you about the quality water and services we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. We want you i understand the efforts we make to continually improve the water treatment process and protect our water resources. We are committed to enduring the quality of your water. Local Water vigilantly safeguards its water supplies and once again we are proud to report that our system has not violated a maximum contaminant level or any other water quality standard.
- 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
- 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 abour drinking water from their healt care providers. EPA/Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and ober microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791). Drinking water, including bottled water, may reasonant he 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 (1-800-426-4791).
How do we monitor for contaminants? St. Martins by the Bay routinely monitors for contaminants in your drinking water according to Federal and State laws. This table show, dre results of our monitoring for the period of January Ist to December 31", 2017. As water travels over the land or underground, it can pick up subson:* or contaminants such as microbes, inorganic and organic chemicals, and radioactive substances. All drinking water, including bottled drinking wort may be reasonably expected to contain at least small amounts of some contaminants. Itis importantto remember thatthe presence of'these contaminem does not necessarily pose a health risk.
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 walet travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material. and can pret up substances resulting from the presence of animals or from human activity. 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 enfol
- 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 byproducts of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
• Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities. protection for public health.
Educational Statement on Lead If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking walt is primarily from materials and components associated with service lines and home plumbing, St. Martins by the Bay is responsible for providing lugh 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 drinking 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 EPA Safe Drinking Water Hotline at 1-800-426-4791 orat: http://www.epa.gov/safonater/eaet Pare 1:
Water Quality Data Table The table below lists all of the drinking water contaminants that we delected during the calendar year of this report. The presence vi contaminants in the water does not necessarily indicate that the water poses a health risk. Unless otherwise noted, the data presented in this toda 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 one: per year because the concentrations of these contaminants do not change frequently.
Regulated Contaminants Inorganic Contaminants Contaminant, units MCLG MCL Result Range Low High Sample Date Violation Typical Source Copper. ppm 1.3 AL 1.3 0.07** 0 Exceeded AL 2017 No Erosion of natural deposits:
Leaching from wood preservatives: Corrosion of houschold plumbing systems.
Lead. ppb 15 4.0г* 0 Exceeded Al.
2017 No Corrosion of houschold plumbing systems; rosion of natural deposits.
Health Effects Copper is an essential numen.
some people who drink water containing copper in excess or the action level over a relatively shon amount of time could experience gastrointestinal distress. Some people who drink water containing copper in excess of the action level over many years could suffer liver or kidney damage. People with Wilson: Des should consul their pesose cu.
Infants and children who dnol:.:
contaming lead in excess of the a"les level could experiener delas: u. 1.
physical or mental developme Children could show slight delica• m attention span and learning abilities.
Adults who drink this water couki develop kidney problems or high blood pressure.
Health Effects Some people who drink water conten trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervors systems, and may have increased risk of gelling cancer.
Some people who drink water contam? haloacatic acide in excess of the Mo!. ".
many years may have an increased coi. of getting cancer Byc/nose imitation; stomach disconnect * = result is the 90" Percentile reading Disinfectants and Disinfection By-Products Contaminant, units MCLG MCL Result Low Range High Sample Date Violation Typical Source Total Trhalomethanes.
pph NA 80 62.92 2017 No By-product of drinking water disinfection.
Haloacetic Acids. ppb NA 60 26.87 2017 No By-product of drinking water disinfection.
Chlorine. ppm 4 4 0.6 0.7 2017 No Water additive used to control microbes.
Units Description:
NA: Not applicable ND: Not detected NR: Not reported MNR: Monitoring not required, but recommended.
ppm: parts per million, or milligrams per liter (mg/L) pph: parts per billion, or micrograms per liter (ug/L) pCi/l: picocuries per liter (a measure of radioactivity) # of monthly positive samples: Number of samples taken monthly that were found to be positive Important Drinking Water Definitions:
MCLG: Maximum Contaminant Level Goal: The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLOs allow for a margin of safely.
MCL: Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water. MCDs are set as close to the MOGis as tell using the best available treatment technology.
T: Treatment Technique - a required process imended to reduce the level of' a contaminant in drinking wat .: Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water svstem must folle Page 2 0l3
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