Crescent Water Supply
EPA ID: IA7822086 · 778 people served · 2 ZIP codes
Although compliance varies widely among water utilities nationally, Crescent Water Supply stands out with zero EPA violations over five consecutive monitoring years, delivering safe tap water to 778 residents and showing no enforcement activity across the entire reporting span.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Crescent Water Supply Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Crescent Water Supply serves a community with a median household income of $85,419 and an estimated 32,857 residents across its service area. Approximately 75% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Crescent Water Supply'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 1% of homes in Marshall County, Iowa rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Iowa
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
Crescent Water Supply (EPA ID: IA7822086) is a community water system in Iowa that serves approximately 778 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
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
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Crescent Water Supply (IA7822086) on EPA.gov.
Frequently Asked Questions
Is Crescent Water Supply water safe to drink?
Based on EPA records, Crescent Water Supply has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Crescent Water Supply serve?
Crescent Water Supply serves approximately 778 people across 2 ZIP codes in Iowa.
Where does Crescent Water Supply 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:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
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.