How does Redan's water compare to the national average?

The USA national average is 151 mg/L. Redan (≈ 0–59 mg/L) is 121 mg/L softer than average.

Redan Water Hardness & Quality Report (2026)

Water Hardness

soft

~0–59 mg/L

Soft

estimated · not lab-verified

Source

reservoir

pH Level

7.2

neutral = 7.0

Lead

0.009 mg/L

✓ Below action level

TDS

64 mg/L

Est. Daily Cost

$0.08

energy & soap waste

Source: See methodology section below · Updated 2026

soft~0–59 mg/LSoft · est.

0–60

mg/L

Soft

61–120

mg/L

Moderately Hard

121–180

mg/L

Hard

180+

mg/L

Very Hard

Appliance Damage Report

In Redan, your appliances are currently losing 4% efficiency due to mineral buildup.

Appliance	In Redan	Soft Water City	Efficiency Loss
Kettle	8.2 yrs	8.5 yrs	-4%
Washing Machine	11.5 yrs	12 yrs	-4%
Water Heater	14.4 yrs	15 yrs	-4%

Regional Water Comparison

How Redan compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Redan, Georgia	≈ 0–59 mg/L	9.5 ppt	🟢 Soft	reservoir
Stonecrest, Georgia	≈ 0–60 mg/L	7 ppt	🟢 Soft	reservoir
Mountain Park, Georgia	≈ 120–179 mg/L	5.8 ppt	🟠 Hard	reservoir
Clarkston, Georgia	≈ 0–60 mg/L	5.9 ppt	🟢 Soft	reservoir
Belvedere Park, Georgia	≈ 0–60 mg/L	9.2 ppt	🟢 Soft	reservoir

National Benchmark

How Redan compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Redan	≈ 0–59 mg/L	🟢 None
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Redan's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 64 mg/LpH: 7.2

DeKalb County Department of Watershed Management serves Redan, an unincorporated community in DeKalb County, Georgia, as a suburb of Atlanta. The primary source is surface water from the Chattahoochee River, treated at facilities including the Scott Candler Water Reclamation Facility and other county-operated plants. The system covers eastern DeKalb County, serving over 31,000 residents in the CDP. Contact: 770-621-7204, 1580 RoadHaven Drive, Stone Mountain, GA 30083.

The Chattahoochee River watershed spans the Piedmont region, with water filtering through soils over metamorphic gneiss and schist formations of Precambrian age. Supplemental groundwater may tap shallow Piedmont aquifers with granitic bedrock. These resistant, non-carbonate rocks limit ion leaching, contributing low levels of dissolved calcium and magnesium and imparting a soft character to the water — typical of metro Atlanta's supply, in contrast to limestone-dominated areas that yield harder water.

Soft water minimizes scale buildup on appliances, reducing maintenance for water heaters, dishwashers, and washing machines. Soap lathers easily without excess detergent, and fixtures rarely show mineral deposits. No softener is typically recommended at this mineral level. DeKalb County water scores 80/100, with 2 contaminants above health guidelines but no MCL violations. PFAS monitoring shows no compounds above EPA limits; treatment includes disinfection, and pH is typically neutral. Lead/copper rule compliance is maintained.

Geology & Source: Piedmont Province metamorphic and igneous rocks — Precambrian gneiss, schist and granite with minimal limestone influence; low calcium and magnesium dissolution produces soft supply typical of the Chattahoochee River watershed

Other Georgia Water Reports

Stonecrest

≈ 0–60 mg/L

🟢 Soft

Mountain Park

≈ 120–179 mg/L

🟠 Hard

Clarkston

≈ 0–60 mg/L

🟢 Soft

Belvedere Park

≈ 0–60 mg/L

🟢 Soft

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Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Redan's water safe to drink?

Yes. Redan's water meets all federal safety standards. The hardness is ≈ 0–59 mg/L (Soft), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Redan?

Redan's water is soft at ≈ 0–59 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Redan compare to the USA average?

The USA national average is 151 mg/L. Redan (≈ 0–59 mg/L) is 121 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Redan is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.