Where does the water in 03581 come from?

Water for zip code 03581 in Gorham, New Hampshire is provided by 3 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 03581

Q: Is the water hard in Gorham, NH (03581)?

The average water hardness in 03581 is 14 PPM (0.8 GPG), which is classified as soft. No water treatment is typically needed.

Q: Do I need a water softener in 03581?

At 14 PPM, your water is relatively soft. A water softener is generally not necessary, though some homeowners prefer the feel of softened water.

Gorham, New Hampshire · Coos County

14 PPM

0.8 GPG

Soft

0Soft60120180300+

Estimated — Nearby Data

Dataset updated March 9, 2026Matched to 3 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 3 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

3 estimated sources

This ZIP reading needs local confirmation before equipment sizing or purchase decisions.

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 03581

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.

3 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.

Water System	Source	Hardness	Pop. Served	Data Source
Gorham Water And Sewer Dept NH0921010	surface water	2 PPM Soft	2,630	Estimated — Nearby Data
Rosebrook Water NH0382010	groundwater	40 PPM Soft	1,050	Estimated — County Avg
Gorham Hill Spring NH0921020	groundwater	40 PPM Soft	55	Estimated — Nearby Data

Gorham Water And Sewer Dept

NH0921010

Soft

2 PPMsurface water2,630 servedEstimated — Nearby Data

Rosebrook Water

NH0382010

Soft

40 PPMgroundwater1,050 servedEstimated — County Avg

Gorham Hill Spring

NH0921020

Soft

40 PPMgroundwater55 servedEstimated — Nearby Data

Nearby Zip Codes

035706 038462 0423120 0421767 0426120 0405120 0381316 0358841 0384516 0383816 0358341 0403743

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 Gorham, NH (03581).

Submit Your Data

Frequently Asked Questions

Is the water hard in Gorham, NH (03581)?

Our estimate for 03581 is 14 PPM (0.8 GPG), but it is based on nearby, county, or state-level data rather than a direct treated tap-water report for this exact location. Confirm with your utility or a home test.

Do I need a water softener in 03581?

Do not size a softener from this estimate alone. Confirm the actual tap-water hardness before choosing treatment equipment.

Is hard water in 03581 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 03581?

Zip code 03581 in Gorham, New Hampshire is served by 3 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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