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Clayton Water Hardness & Quality Report (2026)

Water Hardness

soft

~0–59 mg/L

Soft

estimated · not lab-verified

Source

reservoir

pH Level

7.4

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

117.1 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 Clayton, your appliances are currently losing 4% efficiency due to mineral buildup.

ApplianceIn ClaytonSoft Water CityEfficiency 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 Clayton compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Clayton, North Carolina≈ 0–59 mg/L51.7 ppt🟢 Softreservoir
Knightdale, North Carolina102.5 mg/L5.4 ppt🟡 Moderately Hardgroundwater
Garner, North Carolina140 mg/L7.3 ppt🟠 Hardgroundwater
Smithfield, North Carolina≈ 0–60 mg/L371.1 ppt🟢 Softreservoir
Raleigh, North Carolina25 mg/L10 ppt🟢 Softreservoir

National Benchmark

How Clayton compares to the USA average

BenchmarkHardnessAppliance Risk
Clayton≈ 0–59 mg/L🟢 None
USA National Avg151 mg/L🟠 Moderate
Scarsdale Top Rated0.02 mg/L🟢 None

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What Makes Clayton's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 117.1 mg/LpH: 7.4

The Town of Clayton Utilities Department provides drinking water to residents of Clayton and surrounding areas of Johnston County, North Carolina, serving approximately 25,000 residents in the service area. The supply is sourced from local groundwater wells tapping coastal plain aquifers within the Neuse River Basin. Treatment occurs at the town's water treatment facilities, including disinfection with chlorine, filtration, and monitoring, ensuring compliance with EPA standards. Customers may contact the utility at 919-553-5002 for the latest Consumer Confidence Report.

Groundwater is recharged via precipitation over the Neuse River Basin, percolating through the unconsolidated sands and clays of the Cretaceous Black Creek and Peedee Aquifers. These formations contain minimal limestone or dolomite outcrops, significantly limiting dissolution of hardness minerals such as calcium and magnesium carbonates. The absence of significant carbonate rock layers produces a characteristically soft water supply with low dissolved solids and minimal geological scaling potential, distinct from karst-heavy or limestone-dominated regions.

With a soft water profile, scaling on fixtures and appliances is negligible, reducing maintenance needs for water heaters, dishwashers, and laundry machines. Soap and detergent efficiency is high. No water softener is required; focus instead on routine filter changes if aesthetic concerns arise. Water quality reports confirm compliance with EPA standards, including lead and copper rule adherence. General testing shows low levels of disinfection byproducts such as TTHMs and haloacetic acids, though advocacy groups flag some exceedances of non-regulatory health guidelines despite legal compliance.

Geology & Source: North Carolina coastal plain — Cretaceous Black Creek and Peedee Formations of unconsolidated sands, clays, and gravels; minimal carbonate rock limits calcium and magnesium dissolution — soft supply

Other North Carolina Water Reports

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Frequently Asked Questions

Is Clayton's water safe to drink?
Yes. Clayton'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 Clayton?
Clayton'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 Clayton compare to the USA average?
The USA national average is 151 mg/L. Clayton (≈ 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 Clayton 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

pH

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.