Record-only indicator: C
Not a safety rating. Missing or old measurements can produce a high score.
Coverage: 0/1 mapped systems have a dated lead result; 1/1 have copper results; 1/1 have UCMR monitoring.
| Contaminant | Reported value or bound | Historical comparison value | Interpretation | Status |
|---|---|---|---|---|
| Copper |
2510.0 ppbPeriod end: 12/31/1993
|
1300 ppb | Largest reported value or bound among mapped systems; not necessarily the largest actual concentration. | Above comparison value |
Public-record summary
Record-only indicator — incomplete or old records can produce a high score. A score of 100 is not a safety finding. Coverage: 0/1 mapped systems have a dated lead result; 1/1 have copper results; 1/1 have UCMR monitoring. Tap water quality in Madison, New Hampshire (03849) receives an record-only indicator of C (Mixed record-based signals) with a score of 60 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 29 points below the New Hampshire state average of 89. The area is served by Village District Of Eidelweiss, a groundwater system providing water to approximately 1,200 people. Testing has found elevated levels of Copper that warrant attention. Over the past 5 years, water systems here have accumulated 11 violations, including 7 health-based violations.
Grade C summarizes the records available to this model, not household safety. Missing, bounded or old measurements can produce a high score, including 100. Review coverage, dates and the current utility report before interpreting this indicator.
Health Information
Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.
Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.
Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.
If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.
Common Questions
The record-only indicator is C (60/100). It cannot determine whether your tap water is safe. Missing, bounded or old measurements can produce a high score. Check the coverage and sampling dates below and your utility's current notices.
ZIP code 03849 is served by 1 water system using groundwater sources, providing water to approximately 1,200 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.
No dated lead result was found for these mapped systems in the published dataset. This does not establish that lead is absent. Ask your utility for its current report and testing options.
No PFAS ("forever chemicals") were detected in water systems serving Madison, New Hampshire during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.
Water systems serving Madison, New Hampshire have received 11 violations in the last 5 years, including 7 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.
This public-record indicator cannot select household treatment. Confirm your supplier, current utility report and tap-testing results first; match any treatment to a certified contaminant-reduction claim and follow its maintenance instructions.