Photo: Mitch Harden · CC BY-SA 2.0Living in Cottleville, MO: what to set up and who to call
Tap water in most of Cottleville comes from Missouri American Water, which has a clean five-year EPA record (about 18% of systems its size had a health-based violation) and a latest lead result below detection. The closest public drop-off to Cottleville is St Charles County Recycle Works Central, 2 miles out; the town decides whether residents may use it.
I’m new in town
What to set up in Cottleville, 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 Cottleville.
Power comes from Union Electric
Union Electric (Union Electric Co - (MO)), an investor-owned utility, serves all of Cottleville. Its homes paid an average of 13.3¢ per kWh in 2025, about $137 a month (its average across Missouri).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Missouri American Water
Missouri American Water supplies Cottleville: about 69% of residents live in its service area. St Peters PWS serves another 16%. St Charles County Pwsd 2 serves another 15%. About 15% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water (EPA lists St Louis City PWS as seller) and serves 1,111,000 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 82% of the 27 systems serving more than 1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.0 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. Violations are counted by the start of their compliance period. MO6010716.
8 home internet providers serve Cottleville
100% of 1,924 addresses can get 100/20 Mbps; 93% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 97% | 1,000/1,000 |
| i3 Broadband | Fiber | 88% | 8,000/8,000 |
| AT&T | DSL, Fiber, Fixed wireless | 86% | 5,000/5,000 |
| Brightspeed | Fiber, DSL | 8% | 940/940 |
| Brown Dog Networks | Fixed wireless | 100% | 50/10 |
| T-Mobile | Fixed wireless | 82% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 2 miles away
Pickup rules, the dump and recycling in Cottleville.
St Charles County Recycle Works Central
60 Triad South Drive, Saint Charles, MO, 63304 · run by St Charles County, Missouri
This isn’t Cottleville’s own facility. Whether Cottleville residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Most of Cottleville (87%) is in Francis Howell R-III School District; parts are in Fort Zumwalt R-II School District (13%).
A+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 Aug 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Cottleville spans 2 ZIP codes
ZIP codes where Cottleville residents live, with the share of the town in each.
| ZIP | Post office name | Share of Cottleville | ZIP’s residents in Cottleville |
|---|---|---|---|
| 63304 | Saint Charles, MO | 52% | 7% |
| 63376 | Saint Peters, MO | 48% | 4% |
A few homes fall in 63368. 63338 is P.O. box or single-organization ZIP with no homes.
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 Cottleville
Who supplies Cottleville’s drinking water, and has it had violations?
Missouri American Water (EPA ID MO6010716). It reported no health-based violations to EPA in the five years to October 2026; 82% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Cottleville?
Union Electric (Union Electric Co - (MO)), an investor-owned utility. Its homes paid about 13.3¢ per kWh in 2025 (EIA).
What internet providers serve Cottleville?
Spectrum, i3 Broadband, AT&T, Brightspeed, Brown Dog Networks, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Cottleville?
63304 (52%), 63376 (48%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Cottleville in?
Francis Howell R-III School District. Parts of the city are in Fort Zumwalt R-II School District.
How do I register to vote in Cottleville?
In Missouri you can register online until 27 days before Election Day, in person until 27 days before Election Day, or by mail (postmarked 27 days before). Elections here are run by the St. Charles. Check your registration at voteroutreach.sos.mo.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: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- 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.