Marlborough Water Works
EPA ID: NH1481010 · 750 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Marlborough Water Works (NH1481010): no drinking-water violations recorded since 2021. Across the monitored periods in available EPA data, Marlborough Water Works has no violations listed for its service population of 750.
Data: EPA SDWIS
Service Area Map
Coverage area for Marlborough Water Works Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Marlborough Water Works have a median household income of $76,797 and about 4,182 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 72% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Marlborough 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.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in New Hampshire
System Overview
Marlborough Water Works (EPA ID: NH1481010) is a community water system in New Hampshire that serves approximately 750 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
No reported lead measurement appears for this PWSID in the accepted LCR snapshot. Absence of a reported measurement is not a measured zero.
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Marlborough Water Works (NH1481010) on EPA.gov.
Frequently Asked Questions
Is Marlborough Water Works water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Marlborough Water Works in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Marlborough Water Works serve?
Marlborough Water Works serves approximately 750 people across 2 ZIP codes in New Hampshire.
Where does Marlborough Water Works get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Marlborough Water Works Water Quality Report, NH. https://zipcheckup.com/water-system/nh1481010/
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