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Detailed report on lead levels detected in Oak Lawn's public drinking water supply. Last updated 2026-02-03.
0.002 mg/L
Detected level is 13.3% of the EPA maximum contaminant level (0.015 mg/L)
Sample date: 2025-10-21
Overall Grade
Detected Level
0.002 mg/L
EPA Maximum (MCL)
0.015 mg/L
Percentage of Limit
13.3%
The detected level of lead in Oak Lawn's water is below 50% of the EPA's maximum contaminant level. While any detection warrants awareness, this level is considered safe by federal standards. EPA MCL: 0.015 mg/L (15 ppb). Lead has no safe level of exposure.
This data is based on water quality testing performed on 2025-10-21. Water quality can vary over time, and we recommend checking for the most recent data periodically.
Lead exposure is especially dangerous for children, causing developmental delays, learning difficulties, and behavioral problems. In adults, it can cause high blood pressure, kidney damage, and reproductive issues.
Residents of Oak Lawn should be aware that lead has been detected in the local water supply at 13.3% of the EPA limit. Current levels are within safe limits, but ongoing awareness is important.
Certain groups face higher risks from lead exposure:
Lead typically enters drinking water through corroded pipes, fixtures, and solder. Homes built before 1986 are at highest risk. Service line replacements are ongoing nationwide.
Oak Lawn draws its drinking water from a mix of surface water and groundwater sources. The city is served by 1 water system, including OAK LAWN WATER SYSTEM.
Lead contamination is typically not from the water source itself but from the distribution system. Older homes in Oak Lawn with lead service lines, lead solder, or brass fixtures are at greatest risk. The age of the housing stock and infrastructure in your specific neighborhood matters most.
Lead was detected in Oak Lawn's water at 0.002 mg/L, which is 13.3% of the EPA maximum. This is within federal safety limits. Consider a certified water filter for extra peace of mind, particularly if you have young children or are in a vulnerable health group.
The following filtration methods are proven effective at reducing or removing lead from drinking water:
Reverse Osmosis
NSF 53 Certified Carbon
Distillation
When choosing a filter, look for NSF/ANSI certification specific to lead removal. Not all filters are equally effective, and certification ensures the product has been independently tested.
See Filter Recommendations for Oak LawnBased on the most recent testing data, lead was detected in Oak Lawn, Illinois water at a level of 0.002 mg/L. This is 13.3% of the EPA maximum contaminant level of 0.015 mg/L. EPA MCL: 0.015 mg/L (15 ppb). Lead has no safe level of exposure.
Lead was detected in Oak Lawn's water at 13.3% of the EPA limit, which is considered safe by federal standards. Lead exposure is especially dangerous for children, causing developmental delays, learning difficulties, and behavioral problems. In adults, it can cause high blood pressure, kidney damage, and reproductive issues. While current levels are not considered dangerous, some health organizations suggest minimizing exposure whenever possible.
The most effective methods for removing lead from your drinking water are: Reverse Osmosis, NSF 53 Certified Carbon, Distillation. When purchasing a filter, look for NSF/ANSI certification that specifically covers lead removal. Installation of a point-of-use filter (at your kitchen faucet or as an under-sink system) provides targeted protection for drinking and cooking water. For whole-house protection, a point-of-entry system can treat all water entering your home.
Yes, Oak Lawn's water utility is required by the EPA to regularly test for lead as part of the Safe Drinking Water Act. The most recent testing detected lead at 0.002 mg/L. These results are published in the city's annual Consumer Confidence Report (CCR), also known as a Water Quality Report. You can also request additional testing information directly from your local water utility or have your home's water independently tested for a more specific assessment.
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