Yorkville vs Oak Park South Water Quality

Side-by-side water quality comparison for two Illinois cities.

If you are comparing Yorkville and Oak Park South water quality - whether moving, choosing between the two, or curious about a relative's water - here is what the data shows.

Hardness comparison

Yorkville has dramatically harder water at 380 PPM versus Oak Park South at 140 PPM, a difference of 240 PPM. At 380 PPM, Yorkville residents should budget for a water softener ($600-$1,500 installed). Without one, expect scale buildup on fixtures, reduced water heater efficiency, and $800-$1,200/year in hidden costs. Oak Park South also has hard water but to a lesser degree.

Both cities have hard water, but Yorkville's higher hardness means more aggressive scale buildup and higher household impact.

Water sources and why they differ

Water sources differ: Yorkville draws from Deep wells (limestone), while Oak Park South uses Lake Michigan. Both use similar source types, but local geology creates the hardness variation.

What this means for you

If you are moving from Oak Park South to Yorkville, you will notice the water difference. Budget for a water softener and expect to use more soap and detergent until you install one.

Not sure what your specific situation needs? Take the quiz to get a recommendation based on your water data, budget, and household size.

MetricYorkvilleOak Park South
Hardness380 PPM140 PPM
GPG22.28.2
TDS570 PPM235 PPM
PFAS0 ppt0 ppt
Lead1.2 ppb5.1 ppb
Chlorine1.1 mg/L1.5 mg/L
LevelExtremely HardHard

FAQ

Which has harder water, Yorkville or Oak Park South?
Yorkville has harder water at 380 PPM compared to Oak Park South at 140 PPM. That is a difference of 240 PPM.
Do I need a water softener if I move from Oak Park South to Yorkville?
Yes, you will likely notice the difference. At 380 PPM, a water softener is recommended to prevent scale buildup and protect appliances.
Is Oak Park South water safe to drink?
Oak Park South water meets EPA safety standards. No contaminants exceed health guidelines in our data.