Lead (Pb) in Water Treatment

Quick Answer

Lead (Pb) is a post-transition metal with atomic number 82. PubChem lists its standard state as solid and its relative atomic mass as 207.

Lead in drinking water often comes from corrosion of plumbing materials rather than the source alone. Corrosion control and material replacement are primary measures; adsorption, ion exchange and membranes can be used for appropriate point-of-use or industrial applications.

Interesting Facts

• The English word “plumbing” traces back to plumbum, the Latin name for lead and the source of its symbol Pb.
• Lead at the tap often comes from service lines, solder, or fittings, so a clean source-water result does not prove every consumer tap is clean.
• Particle-bound and dissolved lead respond differently to sampling and filters; disturbance can release short bursts that a single sample misses.

Water-treatment Design Implications

An element name alone is not enough to select treatment equipment. Confirm chemical form or speciation, total and dissolved concentration, pH, alkalinity, competing ions and the product-water target. Send the water-analysis results to Watermart to identify additional testing and shortlist processes before equipment is specified.

Summary Data Sources

• PubChem — Lead
• IUPAC Periodic Table of Elements
• US EPA — National Primary Drinking Water Regulations

Practical Reference for a Water Analysis

Locate the source before sizing equipment. Compare source-water, post-treatment, first-draw, and flushed samples where appropriate. This can distinguish source contamination from release by pipes, solder, coatings, or fittings.

Validate treatment on the actual matrix. A process name is not a performance guarantee. Competing ions, organic ligands, redox conditions, pH, suspended solids, and required recovery can change removal sharply. Use bench or pilot testing for unusual industrial streams, and make a mass balance for concentrate, sludge, regenerant, or spent media.

Do not invent a drinking-water limit from the periodic table. A health value applies only to the specified substance, route, averaging period, and jurisdiction. Check the current Indonesian requirement and the intended reuse or discharge permit before setting the design target.