Photo: Gepard12 · Public domainLiving in Williams Bay, WI: what to set up and who to call
The latest lead test reported by Williams Bay Waterworks, which supplies Williams Bay, came in at 45.0 ppb (Jan–Jun 2026), above the 15 ppb action level. In Williams Bay, trash day is Tuesday.
I’m new in town
What to set up in Williams Bay, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Williams Bay.
Power comes from Wisconsin Power & Light
Wisconsin Power & Light (Wisconsin Power & Light Co), an investor-owned utility, serves all of Williams Bay. Its homes paid an average of 18.5¢ per kWh in 2025, about $128 a month (its average across Wisconsin).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Williams Bay Waterworks
Williams Bay Waterworks supplies Williams Bay: about 84% of residents live in its service area. About 16% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 2,601 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule), beginning Jul 2025. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Jun 2026, was 45.0 ppb, above the 15 ppb action level that applied. That’s higher than 100% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0 (EPA’s estimate). Violations are counted by the start of their compliance period. WI2650060.
4 home internet providers serve Williams Bay
98% of 1,858 addresses can get 100/20 Mbps; 1% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 98% | 1,000/35 |
| AT&T | Fixed wireless, DSL | 12% | 25/3 |
| T-Mobile | Fixed wireless | 85% | 100/20 |
| Verizon | Fixed wireless | 82% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Williams Bay is Tuesday
Pickup days, the drop-off and recycling in Williams Bay, from the town’s own site.
This month
- TrashEvery week
Compost Collection Center
230 Williams Street, Williams Bay, WI
We couldn’t find its opening hours.
Accepted at the curb
- Any plastic with an @ symbol
- All glass containers regardless of their color
- Metal containers: aluminum, bi-metal and steel
- Newspapers and magazines
- Office paper
- Corrugated cardboard
The Compost Collection Center
230 Williams Street
From williamsbay.org, the town’s official site, checked Oct 21, 2026; pages dated 2026-09-27. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Williams Bay is in two districts that split the grades: Williams Bay School District and Big Foot Union High School District.
C+School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated May 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Williams Bay is in ZIP code 53191
ZIP codes where Williams Bay residents live, with the share of the town in each.
| ZIP | Post office name | Share of Williams Bay | ZIP’s residents in Williams Bay |
|---|---|---|---|
| 53191 | Williams Bay, WI | 100% | 91% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Williams Bay
Who supplies Williams Bay’s drinking water, and has it had violations?
Williams Bay Waterworks (EPA ID WI2650060). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule). 78% of systems its size had none. Its latest lead 90th percentile was 45.0 ppb (Jan–Jun 2026), against a 15 ppb action level.
Who provides electricity in Williams Bay?
Wisconsin Power & Light (Wisconsin Power & Light Co), an investor-owned utility. Its homes paid about 18.5¢ per kWh in 2025 (EIA).
What internet providers serve Williams Bay?
Spectrum, AT&T, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Williams Bay?
53191. Census 2020 ZIP Code Tabulation Areas.
What school district is Williams Bay in?
Williams Bay School District and Big Foot Union High School District. Parts of the city are in Lake Geneva-Genoa City Union High School District.
How do I register to vote in Williams Bay?
In Wisconsin you can register online until 20 days before Election Day, in person up to and including Election Day, or by mail (postmarked 20 days before). Elections here are run by the Village of Williams Bay Clerk. Check your registration at myvote.wi.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: Williams Bay’s own website (williamsbay.org), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.