City of Coeur D Alene
EPA ID: ID1280053 · 54,115 people served · 6 ZIP codes
For the full five-year period covered by EPA monitoring, City of Coeur D Alene has supplied tap water to 54,115 residents with no violations of any type on record.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for City of Coeur D Alene Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Coeur D Alene serves a community with a median household income of $77,139 and an estimated 162,681 residents across its service area.
💧 Where Does Your Water Come From?
City of Coeur D Alene's water is pumped from underground aquifers. 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.
About 2% of homes in Kootenai County, Idaho rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 2 detections recorded.
Comparable Water Systems
Similar-sized systems in Idaho
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
City of Coeur D Alene (EPA ID: ID1280053) is a community water system in Idaho that serves approximately 54,115 people from groundwater sources.
This system provides water to 6 ZIP codes across 4 communities.
Average Home Safety Score: C (68/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 83814 | 0.002 mg/L | No | N/A |
| 83815 | 0.002 mg/L | No | N/A |
| 83816 | 0.002 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: 5 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 1 additional ZIP inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 83814 — Coeur D Alene
- 83815 — Coeur D Alene
- 83816 — Coeur D Alene
- 83835 — Hayden
- 83854 — Post Falls
- 83858 — Rathdrum
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Coeur D Alene (ID1280053) on EPA.gov.
Frequently Asked Questions
Is City of Coeur D Alene water safe to drink?
Based on EPA records, City of Coeur D Alene has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does City of Coeur D Alene serve?
City of Coeur D Alene serves approximately 54,115 people across 6 ZIP codes in Idaho.
Where does City of Coeur D Alene get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
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.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
City of Coeur D Alene (EPA ID: ID1280053) — request the latest Consumer Confidence Report or ask about specific contaminants.