EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Maryland Department of the Environment, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2021 - March 2021), tap water provided by this water utility was in compliance with federal health-based drinking water standards.
- Charles County, Maryland
- Serves: 320
- Data available: 2014-2019
- Source: Groundwater
Legal ≠ Safe
EWG Health Guidelines fill the gap in outdated government standards.
The federal government’s legal limits are not health-protective. The EPA has not set a new tap water standard in almost 20 years, and some standards are more than 40 years old.
Radium, combined (-226 & -228)Potential Effect: cancer44x EWG'S HEALTH GUIDELINE
Radium, combined (-226 & -228)more about
Radium is a radioactive element that causes bone cancer and other cancers. It can occur naturally in groundwater, and oil and gas extraction activities such as hydraulic fracturing can elevate concentrations.
Radium, combined (-226 & -228) was found at 44 times above EWG's Health Guideline.
EWG Health Guideline
pCi/L = picocuries per liter
Health RisksEWG applied the health guideline of 0.05 pCi/L, defined by the California Office of Environmental Health Hazard Assessment as a public health goal for radium-226, to radium-226 and radium-228 combined. This health guideline protects against cancer.
Total trihalomethanes (TTHMs)†Potential Effect: cancer4.1x EWG'S HEALTH GUIDELINE
Total trihalomethanes (TTHMs)more about
Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform.
Total trihalomethanes (TTHMs) was found at 4.1 times above EWG's Health Guideline.
EWG Health Guideline
ppb = parts per billion
Health RisksThe health guideline of 0.15 parts per billion, or ppb, for the group of four trihalomethanes, or THM4/TTHM, was defined in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level.
Includes chemicals detected in 2017-2019 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority; radiological contaminants detected between 2014 and 2019.
† HAA5 is a contaminant group that includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid. HAA9 is a contaminant group that includes the chemicals in HAA5 and bromochloroacetic acid, bromodichloroacetic acid, chlorodibromoacetic acid and tribromoacetic acid. TTHM is a contaminant group that includes bromodichloromethane, bromoform, chloroform and dibromochloromethane.
Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems.
How your levels compare
ppm = parts per million
Includes chemicals detected in 2017-2019 for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authori.
Other Contaminants Tested✕
Chemicals tested for but not detected from 2014 to 2019:
1,2-Dibromo-3-chloropropane (DBCP) , 2,4,5-T , 2,4,5-TP (Silvex) , 2,4-D , 2,4-DB , 3-Hydroxycarbofuran , Alachlor (Lasso) , Aldicarb , Aldicarb sulfone , Aldicarb sulfoxide , Aldrin , Antimony , Arsenic , Atrazine , Barium , Baygon (Propoxur) , Benzo[a]pyrene , Beryllium , Butachlor , Cadmium , Carbaryl , Carbofuran , Chlordane , Chromium (total) , Dalapon , Di(2-ethylhexyl) adipate , Di(2-ethylhexyl) phthalate , Dicamba , Dieldrin , Dinoseb , Endrin , Ethylene dibromide , Haloacetic acids (HAA5) , Heptachlor , Heptachlor epoxide , Hexachlorobenzene (HCB) , Hexachlorocyclopentadiene , Lindane , Mercury (inorganic) , Methiocarb , Methomyl , Methoxychlor , Metolachlor , Metribuzin , Nitrate , Nitrate & nitrite , Oxamyl (Vydate) , Pentachlorophenol , Picloram , Propachlor , Selenium , Simazine , Thallium
Idlewood Park compliance with legally mandated federal standards:
- From April 2019 to March 2021, Idlewood Park complied with health-based drinking water standards.
- 1 QUARTERin violation of any federal drinking water standard from April 2019 to March 2021
Information in this section on Idlewood Park comes from the U.S. EPA Enforcement and Compliance History Online database (ECHO).LEARN MORE ABOUT THIS UTILITY
Water Filters That Can Reduce Contaminant Levels
|Contaminant||Activated Carbon||Reverse Osmosis||Ion Exchange|
|Radium, combined (-226 & -228)||✔||✔|
|Total trihalomethanes (TTHMs)||✔||✔|
Contact Your Local Official
One of the best ways to push for cleaner water is to hold accountable the elected officials who have a say in water quality – from city hall and the state legislature to Congress all the way to the Oval Office – by asking questions and demanding answers.LEARN MORE
Filter Out Contaminants
Check out our recommendations for filters to protect your water against the detected contaminants.EWG’S WATER FILTER GUIDE