Water Quality in Manderson, WY: 2 Violations — Grade D
Grade D · Score 49/100 · 1 water system · Updated 2026-05-03
Manderson's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
The compliance history for Manderson, WY includes 2 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 Manderson
Water quality varies across Manderson's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 82432 | D | 49 | 2 | 1 | View report → |
Water Quality Overview
Manderson, Wyoming receives a water quality grade of D with an overall score of 49 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Manderson have accumulated 2 EPA violations, including 1 health-based violation. These violations are tracked across 1 ZIP codes serving approximately 110 people.
What Grade D Means
A grade of D indicates significant compliance issues. Manderson'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 Manderson water systems is 0.0130 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 69% of homes built before 1986, Manderson 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
Manderson 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 Manderson
Manderson is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 110 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 3 enforcement actions against water systems serving Manderson. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Manderson
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 Manderson Water Systems
The following contaminants have been detected or caused violations across Manderson's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | N/A | 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 3 enforcement actions against water systems serving Manderson. Recent actions:
| Date | Action Type |
|---|---|
| 2025-06-23 | EPA Formal Action |
| 2025-04-08 | State Order Extension |
| 2024-07-22 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-06-23.
Manderson vs. Nearby Wyoming Cities
How Manderson's water quality compares to similar cities in Wyoming:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Manderson | D | 2 | 1 | 110 |
| Dixon | D | 16 | 1 | 114 |
| Savery | D | 0 | 1 | 114 |
| Alta | C | 0 | 1 | 120 |
Common Questions About Manderson Water
These are the most common questions residents search for about water quality in Manderson, Wyoming:
Is Manderson water hard or soft? Water hardness varies by source. Manderson's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Manderson tap water? Manderson's water receives a grade of D (49/100). There are 1 health-based violations — consider filtration.
What is the best water filter for Manderson? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Manderson vs. Wyoming Average
Understanding how Manderson compares to the broader Wyoming 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 Manderson.
ZIP Codes in Manderson
Manderson spans 1 ZIP code. The ZIP with the lowest water quality score is 82432. 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.