Water Quality in Madison, NH: 11 Violations - Grade N/A
1 water system · 1 directly mapped ZIP records
Available EPA records report 11 violations across 1 directly mapped ZIP records with known counts for Madison. This is compliance evidence, not a property-level tap-water verdict.
Data: EPA Safe Drinking Water Information System (SDWIS)
Water Quality by ZIP Code in Madison
This table shows typed EPA water evidence only. Missing violation counts are displayed as N/A, not zero.
| ZIP Code | Violations | Health | |
|---|---|---|---|
| 03849 | 11 | 7 | View report → |
Violation Trend
EPA violations recorded for water systems serving Madison.
| Year | Total violations | Health-based |
|---|---|---|
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 3 |
Water Quality Overview
Madison, New Hampshire has directly mapped EPA water-system data for 1 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.
The available EPA records report 11 violations, including 7 health-based violations across 1 directly mapped ZIP record with reported counts.
Lead Levels
Lead testing results for Madison are unavailable in this dataset snapshot. Community water systems are required to monitor lead under the EPA's Lead and Copper Rule.
With 57% of homes built before 1986, Madison 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.
Water Systems Serving Madison
Madison is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 1,451 people across 1 ZIP code.
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 Madison. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Madison
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history
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 Madison Water Systems
The following contaminants have been detected or caused violations across Madison's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Combined Radium | Radionuclides | 5 pCi/L | 7 | 1 | Yes |
| Lead and Copper Rule | Treatment Technique | N/A | 3 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | 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 Madison:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 3 |
Violations have increased from 2 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 Madison. Recent actions:
| Date | Action Type |
|---|---|
| 2026-01-28 | State Informal Action |
| 2026-01-28 | State Order Extension |
| 2025-12-31 | State Informal Action |
| 2025-12-17 | State Informal Action |
| 2025-11-12 | State Informal Action |
| 2025-11-12 | State Informal Enforcement |
| 2025-05-23 | State Informal Action |
| 2025-05-23 | State Order Extension |
| 2025-05-13 | State Informal Action |
| 2025-04-08 | State Filed Judgment |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2026-01-28.
Madison vs. Nearby New Hampshire Cities
How Madison's water quality compares to similar cities in New Hampshire:
| City | Direct EPA ZIPs | Violations | Systems | Population |
|---|---|---|---|---|
| Madison | 1 | 11 | 1 | 1,451 |
| Center Tuftonboro | 0 | N/A | 0 | 1,441 |
| Salisbury | 0 | N/A | 0 | 1,469 |
| Wilmot | 0 | N/A | 0 | 1,424 |
Common Questions About Madison Water
These are the most common questions residents search for about water quality in Madison, New Hampshire:
Is Madison water hard or soft? Water hardness varies by source. Madison's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Madison tap water? City-level EPA records cannot determine safety at a specific tap. The measured subset contains 7 health-based violations; check the affected utility record and consider certified testing.
What is the best water filter for Madison? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Madison vs. New Hampshire Average
Understanding how Madison compares to the broader New Hampshire 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 Madison.
ZIP Codes in Madison
Madison spans 1 ZIP code. EPA water-system coverage is available for 1 directly mapped ZIP code. 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
Source reporting periods vary. See each cited source for its publication schedule.