Grand Boulevard Water Hardness & Quality Report (2026)
Water Hardness
6.3 grains per gallon
Source
river
pH Level
7.6
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
167.6 mg/L
Est. Daily Cost
$0.29
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Grand Boulevard, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Grand Boulevard | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6 yrs | 8.5 yrs | -29% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 11.3 yrs | 15 yrs | -25% |
Regional Water Comparison
How Grand Boulevard compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Grand Boulevard, Illinois | 108 mg/L | 3.9 ppt | 🟡 Moderately Hard | river |
| Kenwood, Illinois | 215.5 mg/L | 7.5 ppt | 🔴 Very Hard | river |
| Douglas, Illinois | 173.5 mg/L | 6.1 ppt | 🟠 Hard | river |
| Hyde Park, Illinois | 280.5 mg/L | 9.7 ppt | 🔴 Very Hard | river |
| Woodlawn, Illinois | 258.5 mg/L | 9 ppt | 🔴 Very Hard | river |
National Benchmark
How Grand Boulevard compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Grand Boulevard | 108 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Grand Boulevard's Water Unique?
Local geology and source profile
Grand Boulevard, Illinois, in Cook County — one of Chicago's most historically significant African-American neighborhoods, the heart of Bronzeville (known as the "Black Metropolis") along King Drive and 35th Street — receives its municipal water from the Chicago Department of Water Management (DWM), which draws from Lake Michigan through the South Water Filtration Plant and Jardine Water Purification Plant serving the city's extensive South Side distribution network. Grand Boulevard is served through the Chicago DWM's South District grid.
The moderately hard 108 mg/L hardness and TDS of 167.6 mg/L reflect a lower-hardness distribution zone within Chicago's DWM system — notably softer than the Near South Side reading (201 mg/L) recorded in the adjacent service area. Lake Michigan raw water carries moderate carbonate hardness (~130–160 mg/L) from Great Lakes basin drainage, and Chicago's DWM treatment softens the supply modestly before distribution. The Grand Boulevard distribution zone appears to access a portion of the South Side grid where raw Lake Michigan supply characteristics are more directly preserved, with less mineral accumulation from aging distribution infrastructure than observed in some adjacent South Side service areas. This variation within the Chicago DWM system reflects the patchwork character of the city's 19th and 20th century distribution infrastructure.
At 108 mg/L, Grand Boulevard's water is moderately hard — noticeably softer than nearby Chicago neighborhoods. Scale forms gradually in kettles and appliances over months, soap lathers well, and the dishwasher produces clean results. Semi-annual descaling of heating appliances is adequate. The PFAS level of 3.9 ppt is one of the more favorable readings in the Chicago South Side dataset — the Grand Boulevard distribution zone's supply characteristics and its position in the DWM network contribute to this comparatively lower PFAS reading.
Geology & Source: Grand Boulevard in Cook County is served by the Chicago Department of Water Management (DWM) drawing from Lake Michigan — Lake Michigan receives carbonate tributary drainage from the Silurian Niagara Dolomite and Devonian limestone Great Lakes platform — Lake Michigan carbonate input and treatment produce moderately hard water at 108 mg/L with TDS 168 mg/L in this historic South Side Chicago neighborhood, reflecting a lower-hardness distribution zone.