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Water Hardness in 35904

Gadsden, Alabama · Etowah County

136 PPM
8 GPG
Moderately Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 2026Matched to 7 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 7 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
7 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 35904

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.

7 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.
Gadsden, The Wwsb Of The City Of
AL0000577
Moderately Hard
139 PPMsurface water44,637 servedEstimated — County Avg
Rainbow City, Wwb Of The Town Of
AL0000588
Moderately Hard
139 PPMgroundwater12,363 servedEstimated — Nearby Data
Southside Water Works
AL0000591
Moderately Hard
139 PPMgroundwater12,327 servedEstimated — Nearby Data
Northeast Etowah County Water Co-Op
AL0000587
Soft
57 PPMsurface water4,275 servedEstimated — Nearby Data
Highland Water Authority
AL0000580
Hard
227 PPMsurface water3,963 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

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

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 Gadsden, AL (35904).

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Frequently Asked Questions

Is the water hard in Gadsden, AL (35904)?

Our estimate for 35904 is 136 PPM (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 35904?

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

Is hard water in 35904 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 35904?

Zip code 35904 in Gadsden, Alabama is served by 7 water systems.

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