Water Quality in Swan Valley, ID: 7 Violations — Grade B
Grade B · Score 75/100 · 1 water system · Updated 2026-05-03
Swan Valley's water is mostly safe. Minor violations exist but are primarily monitoring-related.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Compliance records maintained by the EPA for Swan Valley, ID log 7 violations — accumulated reportable events drawn from every local utility in the SDWIS national tracking system.
Water Quality by ZIP Code in Swan Valley
Water quality varies across Swan Valley's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 83449 | B | 75 | 7 | 0 | View report → |
Water Quality Overview
Swan Valley, Idaho receives a water quality grade of B with an overall score of 75 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Swan Valley have accumulated 7 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 129 people.
What Grade B Means
A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Swan Valley's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.
Lead Levels
The average 90th percentile lead level across Swan Valley water systems is 0.0030 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 49% of homes built before 1986, Swan Valley 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
Swan Valley is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Swan Valley
Swan Valley is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 129 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 Swan Valley. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Swan Valley
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 Swan Valley Water Systems
The following contaminants have been detected or caused violations across Swan Valley's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 1 | 1 | No |
| Combined Radium | Radionuclides | 5 pCi/L | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Swan Valley. Recent actions:
| Date | Action Type |
|---|---|
| 2024-09-08 | State Informal Enforcement |
| 2024-09-05 | State Informal Action |
| 2024-01-18 | State Order Extension |
| 2024-01-07 | State Informal Enforcement |
| 2024-01-04 | State Informal Action |
| 2023-11-12 | State Informal Enforcement |
| 2023-11-09 | State Informal Action |
| 2023-02-21 | State Order Extension |
| 2022-12-20 | State Order Extension |
| 2022-11-11 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-09-08.
Swan Valley vs. Nearby Idaho Cities
How Swan Valley's water quality compares to similar cities in Idaho:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Swan Valley | B | 7 | 1 | 129 |
| Irwin | D | 0 | 1 | 129 |
| Murtaugh | C | 3 | 1 | 130 |
| Ferdinand | C | 4 | 1 | 133 |
Common Questions About Swan Valley Water
These are the most common questions residents search for about water quality in Swan Valley, Idaho:
Is Swan Valley water hard or soft? Water hardness varies by source. Swan Valley's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Swan Valley tap water? Swan Valley's water receives a grade of B (75/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Swan Valley? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Swan Valley vs. Idaho Average
Understanding how Swan Valley 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 Swan Valley.
ZIP Codes in Swan Valley
Swan Valley spans 1 ZIP code. The ZIP with the lowest water quality score is 83449. 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.
Frequently Asked Questions
Your Water is Safe — Here's How to Keep It That Way
Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.