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Water Hardness in 04011

Birch Island, Maine · Cumberland County

20 PPM
1.2 GPG
Soft
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 5 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 5 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
2 verified treated-water sources
5 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 04011

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.

5 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.
Portland Water District-Greater
ME0091300
Soft
20 PPMsurface water135,068 servedVerified — Annual Water Quality Report
Source water: 79 PPM
Brunswick/Topsham Water District
ME0090260
Soft
20 PPMgroundwater18,250 servedVerified — Annual Water Quality Report
Source water: 67 PPM
Midcoast Regional Redevelop Authority
ME0092747
Slightly Hard
67 PPMgroundwater200 servedHigh Confidence — USGS Monitoring
Millstone Apartments
ME0092260
Slightly Hard
67 PPMgroundwater97 servedHigh Confidence — USGS Monitoring
Wood Pond Village
ME0092372
Slightly Hard
67 PPMgroundwater60 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

0408621040322104079200453060406620042222004252200406920040032004250270457960400867

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 Birch Island, ME (04011).

Submit Your Data

Frequently Asked Questions

Is the water hard in Birch Island, ME (04011)?

The average water hardness in 04011 is 20 PPM (1.2 GPG), which is classified as soft.

Do I need a water softener in 04011?

At 20 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 04011 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 04011?

Zip code 04011 in Birch Island, Maine is served by 5 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.

10 min read

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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