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Water Hardness in 31305

Darien, Georgia · Mcintosh County

224 PPM
13.1 GPG
Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 10 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 10 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
10 USGS-backed sources
10 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 31305

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.

10 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.
Mcintosh County-Crescent Community Ws
GA1910021
Hard
238 PPMgroundwater3,406 servedHigh Confidence — USGS Monitoring
Darien Water System
GA1910000
Hard
238 PPMgroundwater3,242 servedHigh Confidence — USGS Monitoring
John Alford Subdivision
GA1910009
Slightly Hard
107 PPMgroundwater989 servedHigh Confidence — USGS Monitoring
Mcintosh County-Carnigan Community
GA1910019
Hard
238 PPMgroundwater540 servedHigh Confidence — USGS Monitoring
Sapelo Ridge/Poppell Farms Subdivision
GA1910097
Hard
238 PPMgroundwater300 servedHigh Confidence — USGS Monitoring
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 Darien, GA (31305).

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Frequently Asked Questions

Is the water hard in Darien, GA (31305)?

The average water hardness in 31305 is 224 PPM (13.1 GPG), which is classified as hard.

Do I need a water softener in 31305?

With hardness of 224 PPM, a water softener is recommended for homes in 31305.

Is hard water in 31305 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 31305?

Zip code 31305 in Darien, Georgia is served by 10 water systems.

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