C55/100
Sandwich Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 79,250 residents · Massachusetts
What's In Sandwich's Tap Water?
62
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2008.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
SANDWICH WATER DISTRICT
Population Served
23,000
Water Source
Groundwater
System ID
MA4261000
UPPER CAPE REGIONAL WATER COOPERATIVE
Population Served
56,250
Water Source
Groundwater
System ID
MA4261024
Frequently Asked Questions About Sandwich Water
Is Sandwich tap water safe to drink?
Sandwich, Massachusetts tap water receives a grade of C (55/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 37 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Sandwich's water?
66 contaminants were tested in Sandwich's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Sandwich have any water quality violations?
Yes, Sandwich has 37 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, MCL, MR. 13 of these are health-based violations, which are the most serious category.
Do I need a water filter in Sandwich?
Sandwich water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Sandwich's tap water come from?
Sandwich's drinking water is sourced from groundwater and supplied by SANDWICH WATER DISTRICT and 1 other water system(s). The system serves approximately 79,250 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Sandwich's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Sandwich's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Sandwich's water compare to other cities in Massachusetts?
Sandwich's water quality score of 55/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Massachusetts state page to see how all cities in the state compare.
What should I do if I'm concerned about Sandwich's water quality?
If you have concerns about Sandwich's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (SANDWICH WATER DISTRICT) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.