How does Port Arthur's water compare to the national average?

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

Port Arthur Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

reservoir

pH Level

8.5

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

661.8 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 Port Arthur, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Port Arthur	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 Port Arthur compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Port Arthur, Texas	≈ 180+ mg/L	5.5 ppt	🔴 Very Hard	reservoir
Groves, Texas	≈ 180+ mg/L	0 ppt	🔴 Very Hard	reservoir
Nederland, Texas	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Port Neches, Texas	≈ 180+ mg/L	0 ppt	🔴 Very Hard	reservoir
Beaumont, Texas	≈ 0–60 mg/L	0 ppt	🟢 Soft	reservoir

National Benchmark

How Port Arthur compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Port Arthur	≈ 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 Port Arthur's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 661.8 mg/LpH: 8.5

The City of Port Arthur Water Utility (PWS ID TX1230009) serves approximately 54,846 residents in Jefferson County, Texas, via a 400-mile network of mains, pump stations, and reservoirs. Drinking water is sourced from surface water including the Neches River Basin, the Lower Neches Valley Authority Canal System, and the Port Arthur Reservoir, treated at municipal facilities before distribution. The Neches River watershed spans the Piney Woods and Gulf Coastal Plains, draining into Sabine Lake near Port Arthur.

The watershed sits within a Cenozoic sedimentary environment featuring sands, clays, and gravels of the Beaumont Formation, with underlying Miocene aquifers influencing baseflow. This alluvial geology leaches dissolved calcium and magnesium ions into river water as it moves through unconsolidated sediments, yielding a hard supply with elevated mineral content characteristic of Gulf Coast river systems influenced by limestone-bearing tributaries upstream.

Very hard water promotes significant scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and shortening appliance lifespan. Regular descaling, vinegar rinses, and dedicated cleaners help mitigate effects; a water softener is strongly recommended to protect plumbing and appliances. Recent January 2025 turbidity exceedances triggered boil water notices, and contaminants including disinfection byproducts such as TTHMs and haloacetic acids have been detected; treatment involves filtration and disinfection with surface water monitoring for microbes and organics.

Geology & Source: Lower Neches River coastal plain — Quaternary alluvial sediments, Beaumont and Loma Alta clays over Miocene Oakville sands; unconsolidated sands and gravels promote calcium and magnesium dissolution, yielding hard Gulf Coast river water

Other Texas Water Reports

Groves

≈ 180+ mg/L

🔴 Very Hard

Nederland

≈ 120–179 mg/L

🟠 Hard

Port Neches

≈ 180+ mg/L

🔴 Very Hard

Beaumont

≈ 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 Port Arthur's water safe to drink?

Yes. Port Arthur'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 Port Arthur?

At ≈ 180+ mg/L (Very Hard), Port Arthur'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 Port Arthur compare to the USA average?

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