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
4560
Cities
51
States / Regions
151
Avg mg/L
United Kingdom
DWI Data Portal
1251
Cities
12
Regions
177
Avg mg/L
Canada
Environment Canada
749
Cities
12
States / Regions
140
Avg mg/L
Australia
BOM National Performance Report & ADWG
617
Cities
8
States/Territories
125
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
Aberdeen
Scotland
0–99 mg/L
View report →Abilene
Texas
240 mg/L
View report →Adelaide
South Australia
60–119 mg/L
View report →Akron
Ohio
60–119 mg/L
View report →Albany
New York
120–179 mg/L
View report →Albuquerque
New Mexico
120–179 mg/L
View report →Alexandria
Virginia
113 mg/L
View report →Alhambra
Arizona
180–500 mg/L
View report →Allentown
Pennsylvania
120–179 mg/L
View report →Amarillo
Texas
248 mg/L
View report →Amherst
New York
120–179 mg/L
View report →Anaheim
California
120–179 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