F0/100
Natick Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 37,006 residents · Massachusetts
What's In Natick's Tap Water?
66
Contaminants Tested
2
Exceed EPA Limits
2
Above EPA Goals
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.027 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.010 µg/L | 0.004 µg/L | Over Limit |
manganese | 587.00 µg/L | — | Above Goal |
chlorate | 230.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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
NATICK WATER AND SEWER DIVISION
Population Served
37,006
Water Source
Groundwater
System ID
MA3198000
Frequently Asked Questions About Natick Water
Is Natick tap water safe to drink?
Natick, Massachusetts tap water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA maximum contaminant levels and 115 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Natick's water?
Of the 66 contaminants tested in Natick's water supply, the most notable include PFOS, PFOA, manganese, chlorate. 2 contaminant(s) exceed EPA legal limits (MCLs). 4 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Natick have any water quality violations?
Yes, Natick has 115 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, MCL, Other. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Natick?
Based on EPA data, using a water filter in Natick is recommended. 2 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Natick's tap water come from?
Natick's drinking water is sourced from groundwater and supplied by NATICK WATER AND SEWER DIVISION. The system serves approximately 37,006 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Natick'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. Natick'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 Natick's water compare to other cities in Massachusetts?
Natick's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Massachusetts state page to see how all cities in the state compare.
What should I do if I'm concerned about Natick's water quality?
If you have concerns about Natick'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 (NATICK WATER AND SEWER DIVISION) 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.