Water Quality Reports
Mineral hardness, PFAS levels, pH, and lead data for every city — sourced from government databases, updated annually.
Browse by Country
United States
USGS Water Quality Portal & EPA
3887
Cities
51
States
150
Avg mg/L
United Kingdom
DWI Data Portal
40
Cities
12
Regions
164
Avg mg/L
Canada
Environment Canada
20
Cities
6
States
104
Avg mg/L
Australia
BOM National Performance Report & ADWG
20
Cities
8
States/Territories
81
Avg mg/L
Understanding Water Hardness
Calcium carbonate concentration in mg/L — the international standard for measuring water hardness
0–60
mg/L
Soft
Gentle on pipes and appliances. May taste slightly flat or acidic.
61–120
mg/L
Moderately Hard
Balanced. Minimal scaling, acceptable for most household uses.
121–180
mg/L
Hard
Visible limescale on taps. Reduces appliance efficiency over time.
180+
mg/L
Very Hard
Heavy scaling. Can damage boilers, pipes, and water heaters.
Featured City Reports
Abilene
Texas
427 mg/L
View report →Adelaide
South Australia
155 mg/L
View report →Akron
Ohio
160.5 mg/L
View report →Albany
New York
110 mg/L
View report →Albuquerque
New Mexico
171.5 mg/L
View report →Alexandria
Virginia
178.5 mg/L
View report →Alhambra
Arizona
328 mg/L
View report →Allentown
Pennsylvania
89 mg/L
View report →Amarillo
Texas
94.5 mg/L
View report →Amherst
New York
119 mg/L
View report →Anaheim
California
113.5 mg/L
View report →Anchorage
Alaska
58.5 mg/L
View report →What We Measure
Water Hardness
mg/L as CaCO₃ — the core measure of mineral content and scaling potential
pH Level
Measures acidity — affects pipe corrosion, taste, and appliance wear
PFAS & Lead
Forever chemicals and heavy metals measured against EPA action levels
Appliance Risk
Estimated lifespan reduction for kettles, washing machines & water heaters