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City water profile

Clayton water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Clayton, North Carolina.

Median indexed hardness

40PPM

One indexed ZIP

Range 39.8–39.8 PPM

State comparison
1 PPM below
State hardness rank
#235 of 381
Matched utilities
10
Active health records
0

City summary

What the indexed records say

Clayton has 1 published ZIP profile across Johnston County. The indexed median is 40 PPM, compared with 41 PPM across North Carolina.

Among the 381 North Carolinacities with an indexed median, Clayton ranks #235from highest to lowest. Across all 519 state ZIP profiles, available estimates run from 4.7to 267.5 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
13.6 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 14, 2016 to Jun 9, 2026.

ZIP directory

Water reports in Clayton

Open a ZIP for site-level provenance and measurements.

ZIP code

27520

Soft

39.8 PPM

Nearest site
13.6 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Clayton, Town Of

PWSID NC0351020

Surface water
System population served
30,876
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Flowers Plantation

PWSID NC0351195

Surface water
System population served
11,643
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Town Of Clayton - North

PWSID NC4051019

Surface water
System population served
4,703
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Winston Pointe S/d

PWSID NC4051012

Surface water
System population served
1,326
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Southhills Southwoods Sd

PWSID NC0351168

Groundwater
System population served
716
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Riverwood S/d

PWSID NC0351187

Groundwater
System population served
553
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

White Oak Plantation

PWSID NC0351160

Surface water
System population served
521
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Creekstone S/d

PWSID NC0351186

Groundwater
System population served
505
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Willowbrook Development

PWSID NC0351166

Surface water
System population served
432
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

South Plantation S/d

PWSID NC0351193

Surface water
System population served
357
Last reported
Jun 26, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Revised Total Coliform RuleNC0351195Mar 1, 2025Resolved
ChlorineNC0351195Mar 1, 2025Resolved
Consumer Confidence RuleNC0351168Jul 1, 2024Resolved
Consumer Confidence RuleNC0351188Jul 1, 2024Resolved
Consumer Confidence RuleNC0351182Jul 1, 2024Resolved
Consumer Confidence RuleNC0351194Jul 1, 2024Resolved
TTHMNC0351187Jan 1, 2024Resolved
Total Haloacetic Acids (HAA5)NC0351187Jan 1, 2024Resolved
Revised Total Coliform RuleNC0351185Jul 1, 2023Resolved
Lead and Copper RuleNC0351020Jan 1, 2021Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Clayton

Is the water hard?

The indexed city median is 40 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.