Rio Vista Water Company 3
EPA ID: ID3140098 · 140 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Rio Vista Water Company 3 (ID3140098): no drinking-water violations recorded since 2021. Although compliance varies widely among water utilities nationally, the SDWIS file for Rio Vista Water Company 3 lists no EPA violations for this supplier, whose service area covers 140 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Rio Vista Water Company 3 Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Rio Vista Water Company 3 have a median household income of $60,657 and about 41,155 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 50% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 66% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Rio Vista Water Company 3's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Wastewater Proximity Note: This service area ranks in the 80th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Idaho
System Overview
Rio Vista Water Company 3 (EPA ID: ID3140098) is a community water system in Idaho that serves approximately 140 people from groundwater sources.
This system serves ZIP code 83605 in Caldwell.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by ID or modeled from parcel and building-footprint data.
- 83605 - Caldwell
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Rio Vista Water Company 3 (ID3140098) on EPA.gov.
Frequently Asked Questions
Is Rio Vista Water Company 3 water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Rio Vista Water Company 3 in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Rio Vista Water Company 3 serve?
Rio Vista Water Company 3 serves approximately 140 people across 1 ZIP code in Idaho.
Where does Rio Vista Water Company 3 get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Rio Vista Water Company 3 Water Quality Report, ID. https://zipcheckup.com/water-system/id3140098/
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title = {{Rio Vista Water Company 3 Water Quality Report, ID}},
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