Charlestown Water Works
EPA ID: NH0411010 · 2,850 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Charlestown Water Works (NH0411010): a lead 90th-percentile reading above the EPA action level. Per the federal file, all 3 violations logged for Charlestown Water Works carry a resolved status, and around 2,850 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Charlestown Water Works Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Charlestown Water Works have a median household income of $55,266 and about 5,272 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Charlestown Water Works's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in New Hampshire
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Charlestown Water Works (EPA ID: NH0411010) is a community water system in New Hampshire that serves approximately 2,850 people from groundwater sources.
This system serves ZIP code 03603 in Charlestown.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | TTHM | Non-health-based | Resolved |
| July 1, 2025 | Total Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| July 1, 2021 | Consumer Confidence Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | Monitoring & Reporting | 1 | No |
| TTHM | Monitoring & Reporting | 1 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.019 mg/L | Yes | 2024-06-30 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by NH or modeled from parcel and building-footprint data.
- 03603 - Charlestown
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Charlestown Water Works (NH0411010) on EPA.gov.
Frequently Asked Questions
Is Charlestown Water Works water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Charlestown Water Works; its 3 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Charlestown Water Works serve?
Charlestown Water Works serves approximately 2,850 people across 1 ZIP code in New Hampshire.
Where does Charlestown Water Works get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Charlestown Water Works (NH): 3 EPA Violations. https://zipcheckup.com/water-system/nh0411010/
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author = {{ZipCheckup}},
title = {{Charlestown Water Works (NH): 3 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/nh0411010/}
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What You Can Do
Test your water
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Check your specific ZIP code
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Contact your utility
Charlestown Water Works (EPA ID: NH0411010) - request the latest Consumer Confidence Report or ask about specific contaminants.