Photo: Quintin Soloviev · CC BY 4.0Living in Prosser, WA: what to set up and who to call
Power in Prosser comes from PUD No 1 of Benton County, a political subdivision utility rather than a private company. Prosser School District runs the public schools in Prosser.
I’m new in town
What to set up in Prosser, 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 Prosser.
Power comes from PUD No 1 of Benton County
PUD No 1 of Benton County (PUD No 1 of Benton County), a political subdivision utility, serves all of Prosser. Its homes paid an average of 9.1¢ per kWh in 2025, about $109 a month (its average across Washington).
Start or move service: bentonpud.org · (509) 582-2175
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Prosser water system
The City of Prosser water system supplies almost all of Prosser. It draws ground water and serves 12,070 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 0.0 ppb, below the 15 ppb action level that applied. 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. WA5369750.
6 home internet providers serve Prosser
100% of 2,169 addresses can get 100/20 Mbps; 2% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 94% | 1,000/1,000 |
| CenturyLink | DSL | 50% | 40/3 |
| PocketiNet | Fixed wireless | 99% | 200/50 |
| Advanced High Speed Internet | Fixed wireless | 96% | 500/100 |
| AT&T | Fixed wireless | 71% | 100/20 |
| Verizon | Fixed wireless | 17% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash day in Prosser depends on your street
Pickup days, the drop-off and recycling in Prosser, from the town’s own site.
Your pickup week
- TrashEvery week, on your street’s dayFind your street’s day on cityofprosser.com →
Prosser City Transfer Station
1605 Sherman Avenue, Prosser, WA 99350
- Wed9 am–5 pm
- Fri9 am–5 pm
- Sat9 am–5 pm
Accepted at the curb
- Cardboard
- Mixed Paper
- Tin/Aluminum Cans
From cityofprosser.com, the town’s official site, checked Oct 21, 2026. 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.
Prosser is in Prosser School District.
CSchool 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 Jun 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Prosser is in ZIP code 99350
ZIP codes where Prosser residents live, with the share of the town in each.
| ZIP | Post office name | Share of Prosser | ZIP’s residents in Prosser |
|---|---|---|---|
| 99350 | Prosser, WA | 100% | 46% |
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 Prosser
Who supplies Prosser’s drinking water, and has it had violations?
The City of Prosser water system (EPA ID WA5369750). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Prosser?
PUD No 1 of Benton County (PUD No 1 of Benton County), a political subdivision utility. Its homes paid about 9.1¢ per kWh in 2025 (EIA).
What internet providers serve Prosser?
Spectrum, CenturyLink, PocketiNet, Advanced High Speed Internet, AT&T, Verizon (FCC, as of December 2025).
What ZIP codes are in Prosser?
99350. Census 2020 ZIP Code Tabulation Areas.
What school district is Prosser in?
Prosser School District.
How do I register to vote in Prosser?
In Washington you can register online until 8 days before Election Day, in person up to and including Election Day, or by mail (received 8 days before). Elections here are run by the Benton County Auditor. Check your registration at voter.votewa.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: Prosser’s own website (cityofprosser.com), 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 Sep 30, 2026 (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.