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City water profile

Millsboro water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Millsboro, Delaware.

Median indexed hardness

54PPM

One indexed ZIP

Range 54.2–54.2 PPM

State comparison
1 PPM below
State hardness rank
#25 of 37
Matched utilities
10
Active health records
0

City summary

What the indexed records say

Millsboro has 1 published ZIP profile across Sussex County. The indexed median is 54 PPM, compared with 55 PPM across Delaware.

Among the 37 Delawarecities with an indexed median, Millsboro ranks #25from highest to lowest. Across all 48 state ZIP profiles, available estimates run from 47.3to 82.4 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
3.2 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 6, 2016 to Jun 3, 2026.

ZIP directory

Water reports in Millsboro

Open a ZIP for site-level provenance and measurements.

ZIP code

19966

Soft

54.2 PPM

Nearest site
3.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Long Neck Water Company

PWSID DE0000625

Groundwater
System population served
11,000
Last reported
Apr 30, 2026

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

Millsboro Water Department

PWSID DE0000622

Groundwater
System population served
8,568
Last reported
Apr 30, 2026

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

Baywood Greens

PWSID DE00A0425

Groundwater
System population served
909
Last reported
Apr 30, 2026

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

Long Neck Village

PWSID DE00A0188

Groundwater
System population served
345
Last reported
Apr 30, 2026

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

Shawns Hideaway System #1

PWSID DE0001646

Groundwater
System population served
341
Last reported
Apr 30, 2026

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

Carey Estates, Llc

PWSID DE0000521

Groundwater
System population served
312
Last reported
Apr 30, 2026

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

Country Living Mobile Court

PWSID DE0000623

Groundwater
System population served
255
Last reported
Apr 30, 2026

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

Homestead Park

PWSID DE0000264

Groundwater
System population served
230
Last reported
Apr 30, 2026

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

Enchanted Acres Mhc Llc

PWSID DE0000259

Groundwater
System population served
225
Last reported
Apr 30, 2026

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

Woodlands Of Millsboro Pump District

PWSID DE00A0279

Groundwater
System population served
171
Last reported
Apr 30, 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 RuleDE00A0188Oct 1, 2025Resolved · health-based
NitrateDE0000590Apr 1, 2025Resolved · health-based
NitrateDE0000590Jan 1, 2025Resolved · health-based
Lead and Copper RuleDE0000622Dec 16, 2024Resolved
Consumer Confidence RuleDE0000267Jul 10, 2024Resolved
Lead and Copper RuleDE00A0188Jul 1, 2022Resolved
Consumer Confidence RuleDE0000267Jul 1, 2022Resolved
Consumer Confidence RuleDE0000590Jul 1, 2021Resolved
Consumer Confidence RuleDE0000590Jul 1, 2010Addressed
Lead and Copper RuleDE0000521Jan 1, 1994Unaddressed

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 Millsboro

Is the water hard?

The indexed city median is 54 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.