A90/100
North Chelmsford Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 7,498 residents · Massachusetts
What's In North Chelmsford's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025Rule: Ground Water RuleEnforcement: Formal — state order issued
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
NORTH CHELMSFORD WATER DIST
Population Served
7,498
Water Source
Groundwater
System ID
MA3056002
Frequently Asked Questions About North Chelmsford Water
Is North Chelmsford tap water safe to drink?
North Chelmsford, Massachusetts tap water receives a grade of A (90/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in North Chelmsford's water?
Of the 31 contaminants tested in North Chelmsford's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does North Chelmsford have any water quality violations?
Yes, North Chelmsford has 7 EPA violation(s) on record, with the most recent in 2025. Violation types include MR. None of these are classified as health-based violations.
Do I need a water filter in North Chelmsford?
North Chelmsford 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. 1 contaminant(s) exceed these stricter goals.
Where does North Chelmsford's tap water come from?
North Chelmsford's drinking water is sourced from groundwater and supplied by NORTH CHELMSFORD WATER DIST. The system serves approximately 7,498 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is North Chelmsford'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. North Chelmsford'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 North Chelmsford's water compare to other cities in Massachusetts?
North Chelmsford's water quality score of 90/100 earns a grade of A, which is considered excellent. This places North Chelmsford among the better-performing water systems in Massachusetts. Visit our Massachusetts state page to see how all cities in the state compare.
What should I do if I'm concerned about North Chelmsford's water quality?
If you have concerns about North Chelmsford'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 (NORTH CHELMSFORD WATER DIST) 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.