Water Quality in King Hill, ID: 11 Violations — Grade F
Grade F · Score 33/100 · 1 water system · Updated 2026-05-03
King Hill's water has serious compliance issues. Independent testing and filtration are strongly recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
The compliance history for King Hill, ID includes 11 water violations on file with the EPA — a federal tally that spans health-based exceedances, monitoring failures, and enforcement actions logged under the Safe Drinking Water Act.
Water Quality by ZIP Code in King Hill
Water quality varies across King Hill's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 83633 | F | 33 | 11 | 8 | View report → |
Violation Trend
EPA violations recorded for water systems serving King Hill.
Water Quality Overview
King Hill, Idaho receives a water quality grade of F with an overall score of 33 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving King Hill have accumulated 11 EPA violations, including 8 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 87 people.
What Grade F Means
A grade of F indicates serious compliance issues. King Hill's water systems have substantial violations. Residents should strongly consider independent water testing and appropriate filtration.
Lead Levels
The average 90th percentile lead level across King Hill water systems is 0.0010 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 59% of homes built before 1986, King Hill has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
King Hill is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving King Hill
King Hill is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 87 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving King Hill. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in King Hill
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in King Hill Water Systems
The following contaminants have been detected or caused violations across King Hill's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Barium | Inorganic | 2 mg/L | 8 | 1 | Yes |
| Total Coliform | Microbiological | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving King Hill:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2023 | 1 | 1 |
| 2024 | 4 | 4 |
| 2025 | 3 | 3 |
Violations have increased from 1 in 2023 to 3 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving King Hill. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-22 | State Informal Enforcement |
| 2025-09-19 | State Informal Action |
| 2025-06-20 | State Informal Enforcement |
| 2025-06-17 | State Informal Action |
| 2025-06-01 | State Informal Action |
| 2025-04-14 | State Informal Enforcement |
| 2025-04-11 | State Informal Action |
| 2025-02-22 | State Informal Enforcement |
| 2025-02-19 | State Informal Action |
| 2024-11-16 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-22.
King Hill vs. Nearby Idaho Cities
How King Hill's water quality compares to similar cities in Idaho:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| King Hill | F | 11 | 1 | 87 |
| Ahsahka | C | 10 | 1 | 85 |
| Parma | C | 8 | 1 | 90 |
| Atlanta | C | 2 | 1 | 91 |
Common Questions About King Hill Water
These are the most common questions residents search for about water quality in King Hill, Idaho:
Is King Hill water hard or soft? Water hardness varies by source. King Hill's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink King Hill tap water? King Hill's water receives a grade of F (33/100). There are 8 health-based violations — consider filtration.
What is the best water filter for King Hill? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
King Hill vs. Idaho Average
Understanding how King Hill compares to the broader Idaho average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within King Hill.
ZIP Codes in King Hill
King Hill spans 1 ZIP code. The ZIP with the lowest water quality score is 83633. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.