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

The USA national average is 151 mg/L. Sweetwater (≈ 180+ mg/L) is 189 mg/L harder than average.

Sweetwater Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.7

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

286.9 mg/L

Est. Daily Cost

$0.91

energy & soap waste

Source: See methodology section below · Updated 2026

very hard180+ mg/LVery Hard · 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 Sweetwater, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Sweetwater	Soft Water City	Efficiency Loss
Kettle	4.7 yrs	8.5 yrs	-45%
Washing Machine	6.6 yrs	12 yrs	-45%
Water Heater	8.3 yrs	15 yrs	-45%

Regional Water Comparison

How Sweetwater compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Sweetwater, Texas	≈ 180+ mg/L	6.1 ppt	🔴 Very Hard	reservoir
Snyder, Texas	≈ 120–179 mg/L	32 ppt	🟠 Hard	reservoir
Abilene, Texas	240 mg/L	1121.3 ppt	🔴 Very Hard	reservoir
San Angelo, Texas	≈ 180+ mg/L	102.5 ppt	🔴 Very Hard	reservoir
Big Spring, Texas	≈ 180+ mg/L	97.6 ppt	🔴 Very Hard	reservoir

National Benchmark

How Sweetwater compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Sweetwater	≈ 180+ mg/L	🔴 High
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Sweetwater's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 286.9 mg/LpH: 7.7

The City of Sweetwater Water Utility provides water to residents and businesses in Sweetwater, Texas, and surrounding areas of Nolan County. Its primary supply comes from Lake Sweetwater, a municipal reservoir, supplemented by the Colorado River system. Water treatment and distribution infrastructure ensure service across the region. This mixed supply originates in the Permian Basin watershed.

Within the Permian Basin, the water travels through Cretaceous and Permian limestone and dolomite formations. These carbonate-rich rock layers readily dissolve, releasing significant amounts of calcium and magnesium minerals into both surface reservoirs like Lake Sweetwater and groundwater. The Colorado River's drainage also reflects this geology, leading to a supply that is characteristically hard, typical for west-central Texas.

Homeowners in Sweetwater will likely notice scale buildup in appliances such as kettles, water heaters, and dishwashers due to the water's high mineral content. You might also find that soaps and detergents aren't as effective as you'd expect. To protect your plumbing and household systems, and to improve cleaning efficiency, installing a water softener is recommended. The City of Sweetwater adheres to EPA Safe Drinking Water Act standards, and detailed annual quality reports are available from the utility.

Geology & Source: Permian Basin; Cretaceous and Permian limestone and dolomite produce very hard water

Other Texas Water Reports

Snyder

≈ 120–179 mg/L

🟠 Hard

Abilene

240 mg/L

🔴 Very Hard

San Angelo

≈ 180+ mg/L

🔴 Very Hard

Big Spring

≈ 180+ mg/L

🔴 Very Hard

Report an Issue

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 Sweetwater's water safe to drink?

Yes. Sweetwater's water meets all federal safety standards. The hardness is ≈ 180+ mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Sweetwater?

At ≈ 180+ mg/L (Very Hard), Sweetwater's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 45%.

How does Sweetwater compare to the USA average?

The USA national average is 151 mg/L. Sweetwater (≈ 180+ mg/L) is 189 mg/L above the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Sweetwater 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.