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City water profile

Northfield water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Northfield, Massachusetts.

Median indexed hardness

100PPM

One indexed ZIP

Range 100–100 PPM

State comparison
51 PPM above
State hardness rank
#29 of 302
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Northfield has 1 published ZIP profile across Franklin County. The indexed median is 100 PPM, compared with 49 PPM across Massachusetts.

Among the 302 Massachusettscities with an indexed median, Northfield ranks #29from highest to lowest. Across all 328 state ZIP profiles, available estimates run from 24.3to 128 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard1 ZIP
Hard0 ZIPs
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
11.9 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: May 11, 2016 to Sep 25, 2023.

ZIP directory

Water reports in Northfield

Open a ZIP for site-level provenance and measurements.

ZIP code

01360

Moderately Hard

100 PPM

Nearest site
11.9 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Northfield Water District

PWSID MA1217000

Groundwater
System population served
800
Last reported
Jun 22, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

East Northfield Water Co

PWSID MA1217001

Surface water
System population served
659
Last reported
Jun 22, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Consumer Confidence RuleMA1217001Jul 1, 2022Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Northfield

Is the water hard?

The indexed city median is 100 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.