Siasconset Water Department
EPA ID: MA4197001 · 3,000 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Siasconset Water Department (MA4197001): 1 unresolved EPA violation on record. EPA compliance records for Siasconset Water Department show 1 unresolved violation - findings that remain open and are tracked at the federal level, covering a service territory of approximately 3,000 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Siasconset Water Department Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Siasconset Water Department serves a community with a median household income of $125,524 and an estimated 14,276 residents across its service area. Approximately 55% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Siasconset Water Department's water is pumped from underground aquifers. 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
Detected Contaminants
How Siasconset Water Department compares to EPA limits
What This Means For You
Lead at 1 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Siasconset Water Department (EPA ID: MA4197001) is a community water system in Massachusetts that serves approximately 3,000 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 1 archived, 0 addressed, and 1 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 2, 2025 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| April 1, 2025 | Lead | Non-health-based | Archived |
| July 1, 2022 | Surface Water Treatment 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 |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Lead | Inorganic | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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 MA 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 the full compliance record for Siasconset Water Department (MA4197001) on EPA.gov.
Frequently Asked Questions
Is Siasconset Water Department water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Siasconset Water Department serve?
Siasconset Water Department serves approximately 3,000 people across 2 ZIP codes in Massachusetts.
Where does Siasconset Water Department get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Siasconset Water Department (MA): 3 EPA Violations. https://zipcheckup.com/water-system/ma4197001/
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title = {{Siasconset Water Department (MA): 3 EPA Violations}},
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url = {https://zipcheckup.com/water-system/ma4197001/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Siasconset Water Department (EPA ID: MA4197001) - request the latest Consumer Confidence Report or ask about specific contaminants.