What to Do If Your Water Tests Positive for Lead

Receiving a laboratory report that indicates the presence of lead in your drinking water can be an unsettling experience. For many homeowners, the kitchen tap is a symbol of safety and health; discovering that this essential utility may be carrying a contaminant is a wake-up call that demands action. However, while a positive test result is serious, it is important to understand that it is also a starting point for solving the problem.

Knowing exactly how to react allows you to shift from a state of concern to one of control. Here is a step-by-step guide on what to do if your water tests positive for lead.

1. Don’t Panic—Take Targeted Action

The first thing to remember is that you have immediate options to reduce your risk. Lead contamination in drinking water is rarely a sudden, massive emergency; it is usually a long-term, chronic issue caused by the aging infrastructure of our cities and infrastructure.

While you work through the steps below to identify the source and plan a permanent fix, you can make your home safe today by changing how you use your water.

2. Implement Immediate Protective Measures

If you have detected lead, you do not need to stop using your water entirely, but you must change how you use it until the source is addressed.

Switch to Filtered Water: This is your most important step. Purchase a water filter or a pitcher system that is specifically certified under NSF/ANSI Standard 53 for lead reduction. Not all filters do this—you must look for the certification on the packaging that specifically mentions “lead reduction.”
Use Cold Water Only: Never use hot water from the tap for drinking, cooking, or preparing baby formula. Heat acts as a catalyst for lead leaching; it draws more lead from your pipes into your water than cold water ever would.
The “Flushing” Habit: If your water has been sitting in your pipes for six hours or more (such as when you wake up in the morning or return from work), run the cold water tap for 3 to 5 minutes before filling a glass or a cooking pot. This flushes the stagnant water that has been in contact with your lead service lines or internal plumbing.

3. Identify the Source of the Lead

Lead in water typically comes from one of three places. Identifying which one applies to you is the key to your long-term solution.

The Service Line: This is the pipe connecting your home to the street’s water main. If this is made of lead, it is the primary source of the problem and should be the first target for replacement.
Internal Plumbing: Many homes built before 1986 have internal copper pipes joined with lead-based solder. These small, greyish “blobs” at the joints can leach lead into your water.
Fixtures and Faucets: Even if your service line and piping are lead-free, older brass faucets and valves can still legally contain small amounts of lead.

If you are unsure where your lead is coming from, our guide on plumbing and lead explains how to visually inspect your system and determine where the risk originates.

4. Contact Your Local Water Utility

Your water utility is your best partner in this process. Most utilities now have a legal obligation to manage lead and provide information to their customers.

Report the Result: Inform your utility that you have received a positive lead test. Ask if they have records of your service line material.
Ask for Infrastructure Data: Many cities have now digitized their inventories of lead service lines. Your utility may be able to confirm immediately if you are connected to a lead line and whether there is an active city-funded replacement program for your street.
Inquire About Testing: Some utilities provide free or subsidized lead testing kits to their residents. Before you spend money on independent labs, see if your city can assist you with a secondary, official test.

5. Review the Health Risks

It is natural to be worried about health concerns regarding your family’s health, particularly for children. Lead is a cumulative neurotoxin, meaning that the harm is generally associated with long-term, chronic exposure rather than a single glass of water.

If you are worried about past exposure, the most productive step you can take is to discuss it with your pediatrician or family physician. They can provide accurate information about blood lead level testing, which is the only way to determine if a person has been affected by lead exposure.

6. Plan for Permanent Replacement

A filter is a temporary safety net, not a permanent home improvement. To truly resolve the issue, the lead must be removed.

Budget for Replacement: Treat the replacement of your lead pipes as a major home improvement project. Similar to fixing a roof or a water heater, this is an investment in your home’s value and your family’s future.
Look for Financial Aid: Check with your city’s department of water or public works. With the influx of federal funding, many cities now have grant programs or low-interest loans specifically designed to help homeowners pay for the private-side portion of lead service line replacements.
Hire Licensed Professionals: If you decide to move forward with a replacement, ensure you use a licensed, bonded, and insured plumber who has experience with lead service line replacement. Incorrect replacements can sometimes lead to temporary increases in lead levels, so it is vital to have the work done by someone who knows how to properly flush and certify the new system.

Staying Informed

We know that this process can feel like a heavy burden. You do not have to navigate it in isolation. Our FAQ page contains answers to many of the technical questions that arise after a positive test result, such as how to find an accredited testing lab and how to verify your city’s replacement policies.

To stay up to date on new infrastructure programs, policy changes, and the latest in water safety advocacy, be sure to visit our blog regularly. If you find yourself hitting a wall with your utility or need guidance on how to prioritize your next steps, please do not hesitate to contact us.

By testing your water and receiving a positive result, you have essentially “seen” the invisible danger in your home. That is the most important step in taking control of your water quality. You are now in a position to manage your home’s safety with facts rather than assumptions.

Disclaimer: This information is for educational purposes only and should not be considered professional medical, legal, or plumbing advice. If you have concerns about the safety of your drinking water or your health, always contact your local water utility or a qualified healthcare professional.

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