Skip to content

City water profile

Westminster water quality

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

Median indexed hardness

39PPM

One indexed ZIP

Range 39.1–39.1 PPM

State comparison
10 PPM below
State hardness rank
#266 of 302
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Westminster has 1 published ZIP profile across Worcester County. The indexed median is 39 PPM, compared with 49 PPM across Massachusetts.

Among the 302 Massachusettscities with an indexed median, Westminster ranks #266from 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

Soft1 ZIP
Moderately hard0 ZIPs
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
1.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 4, 2016 to Jun 8, 2026.

ZIP directory

Water reports in Westminster

Open a ZIP for site-level provenance and measurements.

ZIP code

01473

Soft

39.1 PPM

Nearest site
1.8 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Westminster Department Of Public Works

PWSID MA2332000

Surface water
System population served
3,889
Last reported
Jun 22, 2026

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

Holmes Park Water District

PWSID MA2332001

Surface water
System population served
131
Last reported
Jun 22, 2026

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

Leino Park Water District

PWSID MA2332005

Surface water
System population served
120
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.

No violation records are included in the current lookback window.

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 Westminster

Is the water hard?

The indexed city median is 39 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.