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Water Hardness in 01605

Worcester, Massachusetts · Worcester County

25 PPM
1.5 GPG
Soft
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 22 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 22 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
22 verified treated-water sources
22 matched systems total for this ZIP; treated-water reports are prioritized when available.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 01605

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

22 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Worcester Dpwp, Water Supply Division
MA2348000
Soft
25 PPMsurface water206,518 servedVerified — Annual Water Quality Report
Source water: 74 PPM
Fitchburg Dpw Division Of Water Supply
MA2097000
Soft
25 PPMsurface water41,946 servedVerified — Annual Water Quality Report
Source water: 9 PPM
Leominster Water Division
MA2153000
Soft
25 PPMsurface water41,683 servedVerified — Annual Water Quality Report
Source water: 9 PPM
Shrewsbury Water Department
MA2271000
Soft
25 PPMgroundwater38,325 servedVerified — Annual Water Quality Report
Source water: 74 PPM
Milford Water Department
MA2185000
Soft
25 PPMsurface water30,379 servedVerified — Annual Water Quality Report
Source water: 83 PPM
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

016062501608250160925016042501610250160225015452501603250160725015202501611250150525

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Worcester, MA (01605).

Submit Your Data

Frequently Asked Questions

Is the water hard in Worcester, MA (01605)?

The average water hardness in 01605 is 25 PPM (1.5 GPG), which is classified as soft.

Do I need a water softener in 01605?

At 25 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 01605 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 01605?

Zip code 01605 in Worcester, Massachusetts is served by 22 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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