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

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

Snellville Water Hardness & Quality Report (2026)

Water Hardness

soft

~0–59 mg/L

Soft

estimated · not lab-verified

Source

reservoir

pH Level

neutral = 7.0

Lead

0.001 mg/L

✓ Below action level

TDS

55 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 Snellville, your appliances are currently losing 4% efficiency due to mineral buildup.

Appliance	In Snellville	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 Snellville compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Snellville, Georgia	≈ 0–59 mg/L	3.7 ppt	🟢 Soft	reservoir
Lawrenceville, Georgia	148 mg/L	0 ppt	🟠 Hard	reservoir
Mountain Park, Georgia	≈ 120–179 mg/L	5.8 ppt	🟠 Hard	reservoir
Loganville, Georgia	≈ 0–60 mg/L	3 ppt	🟢 Soft	reservoir
Lilburn, Georgia	≈ 0–60 mg/L	4.6 ppt	🟢 Soft	reservoir

National Benchmark

How Snellville compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Snellville	≈ 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 Snellville's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 55 mg/LpH: 7

Gwinnett County Department of Water Resources (DWR) provides water to Snellville, GA, serving over 300,000 residents across Gwinnett County and portions of adjacent areas. The utility sources primarily from Lake Sidney Lanier on the Chattahoochee River (surface water), supplemented by groundwater wells. Treatment occurs at the T. Jackson King (Bergholtz) Water Production Plant and T.W. Allen Water Production Plant, employing coagulation, sedimentation, filtration, and disinfection with chlorine, ensuring safe delivery to residential and commercial customers throughout the service area.

The supply originates in the Upper Chattahoochee River Basin and Lake Lanier watershed, spanning the Piedmont region's metamorphic geology of gneiss, granite, and schist from Precambrian times. Groundwater supplements come from shallow fractured rock aquifers in the same province. This non-carbonate geology imparts a soft character to the water, with low natural mineral content from limited dissolution of calcium and magnesium-bearing rocks, unlike limestone-rich karst regions.

Soft water minimizes scale buildup on fixtures, extending the life of water heaters, dishwashers, and washing machines with little maintenance required for mineral deposits. Soap lathers easily, reducing detergent use, though it may feel slick and can corrode pipes faster in older systems. No water softener is needed or recommended for this soft supply. The 2024 Gwinnett DWR report confirms compliance with all EPA standards, including no MCL violations for lead or copper (90th percentile copper 0.2 mg/L). pH averages 7.5–8.0; no PFAS data reported above detection limits.

Geology & Source: Lake Lanier watershed, Piedmont province; Precambrian gneiss, granite, and schist — non-carbonate crystalline bedrock leaches minimal calcium and magnesium; characteristically soft water supply with low mineral content

Other Georgia Water Reports

Lawrenceville

148 mg/L

🟠 Hard

Mountain Park

≈ 120–179 mg/L

🟠 Hard

Loganville

≈ 0–60 mg/L

🟢 Soft

Lilburn

≈ 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 Snellville's water safe to drink?

Yes. Snellville'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 Snellville?

Snellville'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 Snellville compare to the USA average?

The USA national average is 151 mg/L. Snellville (≈ 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 Snellville 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.