This page shows test results for all water quality parameters measured during the Flint Secondary Water Source Project. Parameters are the metals, chemicals, or other measured water characteristics in your water.
Each grouping of water quality parameters is separated out into tables to provide a data summary of each sampling event. The tables are grouped by:
Tables show combined data for each parameter from completed sampling events.
Certain conditions can cause metals from your home's plumbing to release into your drinking water. Some metals may also come from the source water. Too much metal in drinking water can be a health concern.
Metals can be found dissolved in water and in small pieces called particulates. MDHHS tested water samples for the total amount of each metal, dissolved and particulates. MDHHS also tested water samples for dissolved lead, copper, iron, and manganese. These results were used to calculate the amount of metal particulate in the water.
Community public water supplies add chemicals like chlorine3 to help improve the quality of water delivered to homes. These chemicals may also generate disinfection byproducts (DBPs)4 during the disinfection process.
Chlorine is an effective way to remove bacteria from the water. But swallowing water with too much chlorine or DBPs or inhale too much while showering over time can be a health concern.
The water may have also be tested for coliform bacteria if the chlorine level was low. MDHHS and the City of Flint followed up with residents if any bacteria were found in their results.
General chemistry is a group of water quality parameters that measure how corrosive the water is. Testing the water for these parameters will provide an understanding of how well the corrosion control works in households. Many of the parameters in this group are not chemicals and do not cause health problems directly by themselves. The City of Flint measures the water quality parameters in water samples collected from the blending site and other pipes that carries drinking water from the plant to homes.
