Country Club Hills Water Hardness & Quality Report (2026)

The City of Country Club Hills Water Department serves around 16,511 residents, sourcing its water from Lake Michigan via the Greater Chicago water intake system and regional suppliers like the City of Chicago's Jardine Water Purification Plant. The utility, operating from 4200 West 183rd Street, handles distribution, billing, and compliance reporting. You can reach them at (708) 798-3392 or Waterdept@countryclubhills.org, with after-hours emergencies at (708) 798-3191. The water supply originates from the Lake Michigan watershed, a vast freshwater basin spanning multiple states.

The water's chemistry is shaped by glacial deposits and underlying Silurian-age dolomite and limestone bedrock, which impart a moderately mineralised character through natural dissolution of minerals. This geology, combined with minimal groundwater influence, results in a supply with consistent moderate mineral content rather than very soft or highly alkaline profiles seen in some aquifer-fed systems. The Niagaran Series limestone and dolomite formations contribute to the water's mineralised character.

If you live in Country Club Hills, you might notice that your appliances, like water heaters and dishwashers, are affected by the moderate mineral content in the water. Scale buildup occurs gradually, reducing efficiency over time. To mitigate this, you can try regular vinegar descaling, low-flow aerators, and annual heater flushes. A water softener might be recommended for some households, but it's not essential for everyone. The 2023 Consumer Confidence Report confirms that the water meets or exceeds all state and federal guidelines, with a pH around 7.7-8.5 and no lead services in the community. Tapwaterdata.com rates it a B grade, noting a few contaminants above health guidelines, but no EPA violations.