Water Quality Testing: Why It's Crucial for Your Family's Health

Los Angeles municipal water is tested extensively before it leaves the treatment plant. So why would you test it again at your own faucet? Because everything between the plant and your glass—aging service lines, your home’s plumbing, even the faucet itself—can change what ends up in your water.

The Last Mile Problem

Water utilities are responsible for water quality up to your property line. From there, it travels through your service line and household plumbing—which in older San Fernando Valley homes can include galvanized pipe, lead solder joints, and brass fixtures manufactured before lead-content limits tightened. Corrosion in these materials releases metals directly into your drinking water.

Contaminants Worth Knowing About

• Lead: no safe level exists, and children are most vulnerable. It enters water from old solder, pipes, and fixtures.
• Bacteria: coliform and E. coli can enter through plumbing cross-connections or well systems.
• Chlorine byproducts: disinfection is essential, but its byproducts are worth monitoring in older distribution systems.
• Nitrates: a concern for homes near agricultural or landscaped areas, and dangerous for infants.
• Heavy metals: copper, arsenic, and chromium can appear from plumbing and regional geology.

Why Home Test Strips Are Not Enough

Drugstore test strips can hint at hardness or chlorine, but they cannot detect lead at the concentrations that matter, and they say nothing about bacteria or metals. Certified laboratory analysis with proper sampling technique—including first-draw samples for lead—is the only way to get numbers you can act on.

You cannot see, smell, or taste lead in drinking water. The only way to know is to test.

When Should You Test?

• Your home was built before 1986, when lead solder was banned.
• You are expecting a baby or have young children in the home.
• Water has a metallic taste, odor, or discoloration.
• You are buying a home and want to know before you close.
• It has simply been years since anyone checked.

West Coast Environmental Testing collects samples with strict chain-of-custody protocols and certified lab analysis, then explains your results in plain English with practical solutions. Call (818) 366-8600 to schedule water quality testing anywhere in the greater Los Angeles area.