Harvey Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
river
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
357.2 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · 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 Harvey, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Harvey | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Harvey compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Harvey, Illinois | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Riverdale, Illinois | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| South Holland, Illinois | ≈ 180+ mg/L | 7.3 ppt | 🔴 Very Hard | river |
| Dolton, Illinois | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | river |
| Markham, Illinois | ≈ 180+ mg/L | 3 ppt | 🔴 Very Hard | river |
National Benchmark
How Harvey compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Harvey | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Harvey's Water Unique?
Local geology and source profile
The City of Harvey Public Water System serves approximately 25,000 residents in Harvey, Cook County, Illinois. Water is purchased as treated surface water from the City of Chicago Department of Water Management, with primary intake from Lake Michigan at the Jardine Water Purification Plant and the South Water Purification Plant. Distribution reaches Harvey via regional mains to 15320 Broadway Ave. No local treatment plants operate in Harvey; the system relies fully on Chicago's advanced filtration and disinfection processes — including screening, ozonation, dual-media filtration, chloramination, and fluoride adjustment — before delivery to residents.
Sourced from Lake Michigan's vast watershed draining 11 US states and parts of Canada, the supply passes over glacial till and Paleozoic bedrock dominated by Silurian dolomite and Devonian limestone formations. These carbonate rocks dissolve to yield a hard supply with elevated calcium and magnesium content, alongside bicarbonate alkalinity that stabilizes pH. The nearshore intake zone filters through sand and gravel overlays, minimally softening the mineral load but preserving the geologically imprinted hard character typical of Great Lakes surface waters influenced by limestone aquifers.
Hard water accelerates scale buildup in water heaters, dishwashers, boilers, and coffee makers, reducing efficiency by up to 20–30% and shortening appliance life. Laundry detergents underperform, leaving dingy fabrics, while skin dryness and soap scum become noticeable. Regular vinegar descaling, low-flow fixtures, and magnetic descalers help mitigate these effects; a water softener is strongly recommended to prevent spotting on glassware and fixtures. Harvey earns a B water quality grade with good compliance; the 2023 Consumer Confidence Report notes optimal fluoride (0.6–0.8 mg/L) and neutral pH (7.5–8.5). Two contaminants — haloacetic acids and radium — exceeded health guidelines in past tests but remain under MCLs; lead levels are below EPA action levels per recent monitoring.
Geology & Source: Lake Michigan watershed over Silurian dolomite and Devonian limestone bedrock; glacial drift overlays; carbonate rocks dissolve to yield elevated calcium and magnesium with bicarbonate alkalinity, producing a hard supply
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Frequently Asked Questions
Is Harvey's water safe to drink?
Do I need a water softener in Harvey?
How does Harvey compare to the USA average?
Data Sources & Methodology
Water quality data for Harvey is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.