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City water profile

Emerald Isle water quality

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

Median indexed hardness

188PPM

One indexed ZIP

Range 188–188 PPM

State comparison
147 PPM above
State hardness rank
#22 of 381
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Emerald Isle has 1 published ZIP profile across Carteret County. The indexed median is 188 PPM, compared with 41 PPM across North Carolina.

Among the 381 North Carolinacities with an indexed median, Emerald Isle ranks #22from 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

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

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
1.2 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: May 8, 2017 to Sep 11, 2024.

ZIP directory

Water reports in Emerald Isle

Open a ZIP for site-level provenance and measurements.

ZIP code

28594

Very Hard

188 PPM

Nearest site
1.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Bogue Banks Water Corporation

PWSID NC0416028

Groundwater
System population served
4,995
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 RuleNC0416028Sep 11, 2025Resolved
Revised Total Coliform RuleNC0416028Jul 1, 2025Resolved
Total Haloacetic Acids (HAA5)NC0416028Jan 1, 2025Resolved
TTHMNC0416028Jan 1, 2025Resolved
TTHMNC0416028Oct 1, 2024Resolved
Total Haloacetic Acids (HAA5)NC0416028Oct 1, 2024Resolved

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 Emerald Isle

Is the water hard?

The indexed city median is 188 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.