The table in the link below shows substances reported in the GCWW 2007 Safe Drinking Water Report, which was prepared to meet the EPA's National Primary Drinking Water Regulation for Consumer Confidence Reports (CCRs). 

• The Ohio Environmental Protection Agency reviews test results monthly to ensure that health standards are consistently met. 
• GCWW tests for many more substances that consistently meet all state and federal health standards established for drinking water.
• If you would like a printed report or a complete listing of GCWW test results, call 513-591-7700 and press 0.

GCWW Water Quality Table 2007

This table represents a summary of the more than 600 tests GCWW performs daily to ensure safe drinking water. 

• Source waters are tested routinely before they enter treatment plants.
• Water is tested after each step in the treatment process.
• Water samples from the distribution system are analyzed in our laboratories.
• Monitors with alarms are also located throughout the treatment plants and in the distribution system to continuously monitor water quality.