Water Quality in Siloam Springs, AR: 48 Violations — Grade D
Grade D · Score 48/100 · 2 water systems · Updated 2026-05-03
Siloam Springs's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
According to EPA filings, Siloam Springs, AR has 48 water compliance violations on record — sourced from SDWIS, the federal database that tracks reportable events for every registered public water system in the state.
Water Quality by ZIP Code in Siloam Springs
Water quality varies across Siloam Springs's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 72761 | D | 48 | 48 | 31 | View report → |
Violation Trend
EPA violations recorded for water systems serving Siloam Springs.
Water Quality Overview
Siloam Springs, Arkansas receives a water quality grade of D with an overall score of 48 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 2 water systems serving Siloam Springs have accumulated 48 EPA violations, including 31 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 21,543 people.
What Grade D Means
A grade of D indicates significant compliance issues. Siloam Springs's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.
Lead Levels
The average 90th percentile lead level across Siloam Springs water systems is 0.0010 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 43% of homes built before 1986, Siloam Springs 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
Siloam Springs is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Siloam Springs
Siloam Springs is served by 2 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 21,543 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 Siloam Springs. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Siloam Springs
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 Siloam Springs Water Systems
The following contaminants have been detected or caused violations across Siloam Springs's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Chlorine residual | Disinfectant | 4 mg/L | 30 | 1 | Yes |
| Lead and Copper Rule | Treatment Technique | N/A | 6 | 1 | No |
| E. coli | Microbiological | N/A | 1 | 1 | Yes |
| Surface Water Treatment Rule | Treatment Technique | N/A | 1 | 1 | No |
| 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 Siloam Springs:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2023 | 2 | 2 |
| 2024 | 6 | 6 |
| 2025 | 7 | 7 |
Violations have increased from 2 in 2023 to 7 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Siloam Springs. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-17 | State Informal Action |
| 2025-08-12 | State Informal Action |
| 2025-07-08 | State Informal Action |
| 2025-05-23 | State Informal Action |
| 2025-05-01 | State Informal Action |
| 2025-03-25 | State Informal Action |
| 2025-03-05 | State Informal Action |
| 2025-01-06 | State Informal Action |
| 2024-10-24 | State Informal Action |
| 2024-08-06 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-17.
Siloam Springs vs. Nearby Arkansas Cities
How Siloam Springs's water quality compares to similar cities in Arkansas:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Siloam Springs | D | 48 | 2 | 21,543 |
| Stuttgart | B | 2 | 3 | 22,721 |
| Farmington | B | 0 | 1 | 20,140 |
| Bryant | A | 0 | 1 | 19,607 |
Common Questions About Siloam Springs Water
These are the most common questions residents search for about water quality in Siloam Springs, Arkansas:
Is Siloam Springs water hard or soft? Water hardness varies by source. Siloam Springs's 2 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Siloam Springs tap water? Siloam Springs's water receives a grade of D (48/100). There are 31 health-based violations — consider filtration.
What is the best water filter for Siloam Springs? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Siloam Springs vs. Arkansas Average
Understanding how Siloam Springs compares to the broader Arkansas 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 Siloam Springs.
ZIP Codes in Siloam Springs
Siloam Springs spans 1 ZIP code. The ZIP with the lowest water quality score is 72761. 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.