Water Quality
St. Joseph, Missouri
Andrew County, Missouri
Platte County, Missouri
How to Read These Tables
Missouri American Water conducts extensive monitoring to ensure that your water meets all water quality standards. The results of our monitoring are reported in the following tables. While most monitoring was conducted in 2005, certain substances are monitored less than once per year because the levels do not change frequently. For help with interpreting this table, see the "Table Definitions" section. Starting with a Substance, read across. Year Sampled is usually in 2005 or year prior. MCL shows the highest level of substance (contaminant) allowed. MCLG is the goal level for that substance (this may be lower than what is allowed). Average Amount Detected (Results) represents the measured amount (less is better). Range tells the highest and lowest amounts measured. A Yes under Compliance Achieved means the amount of the substance met government requirements. Typical Source tells where the substance usually originates. Unregulated substances are measured, but maximum contaminant levels have not been established by the government.
Definitions of Terms Used in These Reports
AL (Action Level): The concentration of a contaminant, which, if exceeded, triggers treatment or other requirements, which a water system must follow.
MCL (Maximum Contaminant Level): 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.
MCLG (Maximum Contaminant Level Goal): 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.
MRDL (Maximum Residual Disinfectant Level): The highest level of disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
MRDLG (Maximum Residual Disinfectant Level Goal): The level of 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 contamination.
mrem/year: Millirems per year (a measure of radiation absorbed by the body).
NA: Not applicable
ND: Not detected
NTU (Nephelometric Turbidity Units): Measurement of the clarity, or turbidity, of the water.
pCi/l (picocuries per liter): Measurement of the natural rate of disintegration of radioactive contaminants in water (also beta particles).
ppm (parts per million): One part substance per million parts water, or milligrams per liter.
ppb (parts per billion): One part substance per billion parts water, or micrograms per liter.
TT (Treatment Technique): A required process intended to reduce the level of a contaminant in drinking water.
Sources
http://www.amwater.com/moaw/customer-service/water-quality-reports.html
http://pwsd2andrewcounty.com/page_2.html
Additional Water Information Sources
Missouri Department of Natural Resources
United States Environmental Protection Agency
Safe Drinking Water Hotline: (800) 426-4791
Centers for Disease Control and Protection
American Water Works Association
National Library of Medicine/National Institute of Health