NanoAffix addresses this public health and safety problem through onsite real-time water testing to detect toxic chemicals, such as lead, in drinking water. This product is able to detect lead (Pb) in tap water, lakes, wells, homes, and municipal water distribution centers. It can generate results that reflect the concentration of total Pb from water samples expressed in ppb. The test can be performed onsite and only requires about 1 minute, with the whole process taking no more than 10 minutes. NanoAffix has 4 patents in this area to protect intellectual property. This test would help individuals quickly identify contaminated water sources prior to consumption and monitor contamination levels. The NanoAffix handheld tester will provide customers with accurate affordable analysis of drinking water to prevent health issues such as negatively impacting brain development of children at low environmental exposure levels.