Downer Neighborhood I&s District
EPA ID: WY5601537 · 400 people served · 1 ZIP code
Zero EPA violations over five years — Downer Neighborhood I&s District has kept tap water compliance clean for its full service population of 400.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 1 (2024) to 1 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Downer Neighborhood I&s District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Downer Neighborhood I&s District serves a community with a median household income of $70,315 and an estimated 25,727 residents across its service area. Approximately 59% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Downer Neighborhood I&s District's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 2% of homes in Sheridan County, Wyoming rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Wyoming
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Downer Neighborhood I&s District (EPA ID: WY5601537) is a community water system in Wyoming that serves approximately 400 people from surface water sources.
This system serves ZIP code 82801 in Sheridan.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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 WY or modeled from parcel and building-footprint data.
- 82801 — Sheridan
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Downer Neighborhood I&s District (WY5601537) on EPA.gov.
Frequently Asked Questions
Is Downer Neighborhood I&s District water safe to drink?
Based on EPA records, Downer Neighborhood I&s District has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Downer Neighborhood I&s District serve?
Downer Neighborhood I&s District serves approximately 400 people across 1 ZIP code in Wyoming.
Where does Downer Neighborhood I&s District get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.