F0/100
NATICK WATER AND SEWER DIVISION — Water Quality Report 2026
Serving 37,006 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA3198000
Violations
115
Contaminant Test Results
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
Frequently Asked Questions About NATICK WATER AND SEWER DIVISION
Is NATICK WATER AND SEWER DIVISION water safe to drink?
NATICK WATER AND SEWER DIVISION water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA legal limits and 115 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has NATICK WATER AND SEWER DIVISION detected?
66 contaminants were tested in NATICK WATER AND SEWER DIVISION's water. Notable contaminants include PFOS, PFOA, manganese, chlorate. 2 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does NATICK WATER AND SEWER DIVISION have any EPA violations?
Yes, NATICK WATER AND SEWER DIVISION has 115 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, MCL, Other. 3 are health-based violations.
How many people does NATICK WATER AND SEWER DIVISION serve?
NATICK WATER AND SEWER DIVISION serves approximately 37,006 people, Massachusetts. The system provides water to 1 community: Natick.
What type of water does NATICK WATER AND SEWER DIVISION provide?
NATICK WATER AND SEWER DIVISION sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA3198000.
How does NATICK WATER AND SEWER DIVISION compare to other utilities in Massachusetts?
NATICK WATER AND SEWER DIVISION scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Massachusetts state page for a full comparison of water systems.