After another six months of testing using recently-heightened requirements, Aurora officials have again found high levels of lead in the drinking water of some homes.
Between July and December, the city of Aurora’s Water Production Division collected 100 samples of water and analyzed them for lead, according to a city news release. More than 10% of the samples contained lead readings above the “action level,” meaning the city is now required to take certain actions, such as replacing lead service lines, adjusting water treatment practices and implementing public education programs.
These results do not mean that all drinking water in Aurora contains lead. The water coming from the city’s treatment plant does not have lead in it plus meets all other water quality standards, city officials said in the news release.
Some houses in Aurora just have elevated levels of lead in their water, as lead can enter drinking water from the pipes that connect houses to city water mains, which are called service lines, the city news release said.
This is the second six-month period of testing since the Illinois Environmental Protection Agency instituted new water testing standards in late 2024, changes which city officials said have contributed to certain homes in the city now exceeding the action level for lead. The first six-month round of tests had similar results and required the city take similar actions, including notifying local media.
Under previous standards, only the first liter of water that came out of a faucet in a residential unit would be sampled to test for lead particles, the news release said. Now, both the first and fifth liters of water must be sampled.
Higher rates of lead were found since the fifth liter of water spent more time in the service line, which in some houses is still made out of lead, so more of those particles dissolved in the water, according to the news release. Some homes throughout the city now exceed the U.S. EPA’s action level for lead in water of 15 parts per billion, officials said.
Residents can learn what material their service line is made out of by visiting lead-service-cityofaurora.hub.arcgis.com. Those who wish to have their water tested can email the Water Production Division for help: [email protected].
The city’s public notice about the elevated levels of lead contained several tips for how people can reduce exposure to lead in drinking water. Recommendations include using a filter certified to remove lead, cleaning a faucet’s aerator, using cold water and running water for a short time before using it to clear what sat in pipes.
Nearby construction or maintenance work may disrupt lead service lines, causing more lead to be dissolved into the water, according to the notice. When this happens, the city will provide a temporary lead filter and will also replace the disturbed lead service line for free within 30 days, the notice said.
Aurora has been working to remove lead and galvanized water lines for years. Since 2018, the city has replaced 2,988 lead service lines, with more set to be replaced in the coming years, the recent news release from the city said.
The state of Illinois is set to ramp up its lead water line replacement mandates starting in 2027, according to a presentation last year by Aurora Director of Public Works Jason Bauer. Last year’s water rate increase should cover the cost of that state mandate, but a different federal mandate may raise that requirement even further, costing the city an additional $9 million, Bauer said at the time.
Lead is toxic and can cause serious health problems, especially for children, according to the U.S. EPA.
Even at low levels, lead in a child’s bloodstream can cause developmental issues, the EPA’s website says. Lead is dangerous for adults, too, and is of particular concern for those who are pregnant because it can hurt the developing baby.
Water is not the only way people can be exposed to lead. Considering various risks of exposure, the state has identified many areas across the state, including in the Aurora area, where children are required to be tested for lead exposure.
These “Pediatric Lead Poisoning High-Risk ZIP Code Areas” can be found on the Illinois Department of Public Health’s website.
[email protected]