Costs depend on the number of samples, testing method, lab fees, and whether on-site inspections are required.

If the lead paint is in a place that is not easily disturbed and is not flaking or deteriorating, you do not necessarily need to remove it. Lead is toxic when dust particles or flakes from peeling lead paint are ingested. If people are not in the area with the lead paint, it may be safe to leave it in place. You still may want to consider encapsulation with a paint formulated for covering lead-based paint, just for an added layer of protection.

Iron sediments from rusty pipes are not likely to cause health problems. While a glass of yellow-hued water is off-putting, it is generally safe to drink yellow water in the short term. But you certainly want to address this problem. In the meantime, switching to bottled water until the yellow water issue is resolved is a good idea. 

A lead paint inspection is a thorough examination and assessment of a building or structure to determine the presence of lead-based paint. Lead-based paint was commonly used in buildings before 1978 when its health hazards were fully understood. Lead is toxic and can pose health risks, particularly to young children and pregnant women. Getting a lead paint inspection means finding a lead paint inspector to examine the surfaces of the building—such as walls, ceilings, doors, windows, and other painted areas—and identify the presence of lead-based paint.