Utilities & Infrastructure in Madison, WI

Water systems, internet access, and utility services

Internet & Broadband Access

Source: Census ACS

Broadband Access

91.5%

of households

Cable / Fiber / DSL

82.7%

of households

No Internet

3.2%

of households

Total Households

125,787

Internet Subscription Types

Cable, Fiber, or DSL

82.7%

Cellular Data Plan

87.2%

Satellite

4.2%

Cellular Only (no wired)

6.8%

No Internet Access

3.2%

Device Ownership

Source: Census ACS

Has Computer

97.3%

of households

Smartphone

92.9%

of households

Desktop / Laptop

89.8%

of households

Tablet

65.1%

of households

Any Computing Device

97.3%

Smartphone

92.9%

Desktop / Laptop

89.8%

Tablet

65.1%

Smartphone Only

4.4%

No Computer

2.7%

Percentage of households with each device type. Data from the U.S. Census Bureau ACS (2023 5-year estimates, tables B28001 & B28002).

Water Systems

Source: EPA SDWIS

Water Systems

Population Served

285,795

Violations (5yr)

System Name	Type	Source	Pop. Served	Violations
MADISON WATER UTILITY	Community	Ground water	272,000	1
WAUPUN CORRECTIONAL INST	Community	Ground water	3,706	2
MENDOTA MENTAL HEALTH INST	Community	Ground water	2,787	0
FOX LAKE CORRECTIONAL INSTITUTION	Community	Ground water	1,850	1
SHOREWOOD HILLS WATERWORKS	Community	Purchased ground water	1,670	0
KETTLE MORAINE CORRECTIONAL INSTITUTION	Community	Ground water	1,544	0
MAPLE BLUFF WATERWORKS	Community	Purchased ground water	1,342	0
LAKE FOREST WATER COOP	Community	Ground water	400	3
APPLEWOOD HILL	Community	Ground water	125	0
GORDON CORRECTIONAL CENTER	Community	Ground water	124	0
DELAFIELD LAKES 402	Community	Ground water	50	0
WOODBRIDGE ESTATES	Community	Ground water	48	0
PINE RIDGE APTS	Community	Ground water	45	0
DELAFIELD WOODS 411	Community	Ground water	28	0
DELAFIELD WOODS 828	Community	Ground water	26	0
DELAFIELD LAKES 404	Community	Ground water	25	0
PIRATES COVE MOBILE HOME COMMUNITY	Community	Ground water	25	3

91.5% of households in Madison have broadband internet access. 82.7% have cable, fiber, or DSL service. 6.8% rely solely on cellular data without a wired connection. 3.2% of households have no internet access. The area is served by 17 water systems, providing water to 285,795 people. A total of 10 water quality violations have been recorded over the past 5 years.