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City water profile

Unity water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Unity, Maine.

Median indexed hardness

36PPM

One indexed ZIP

Range 35.6–35.6 PPM

State comparison
3 PPM below
State hardness rank
#92 of 110
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Unity has 1 published ZIP profile across Waldo County. The indexed median is 36 PPM, compared with 39 PPM across Maine.

Among the 110 Mainecities with an indexed median, Unity ranks #92from highest to lowest. Across all 131 state ZIP profiles, available estimates run from 3.2to 94.5 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. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

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
41.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: May 23, 2016 to Oct 11, 2023.

ZIP directory

Water reports in Unity

Open a ZIP for site-level provenance and measurements.

ZIP code

04988

Soft

35.6 PPM

Nearest site
41.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Unity By The Stream Llc

PWSID ME0095570

Groundwater
System population served
88
Last reported
May 13, 2026

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

Sandy Stream Village

PWSID ME0091860

Groundwater
System population served
60
Last reported
May 13, 2026

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

School Street Village

PWSID ME0092190

Groundwater
System population served
50
Last reported
May 13, 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
ArsenicME0095570Jan 1, 2026Archived · health-based
ArsenicME0095570Oct 1, 2025Archived · health-based
ArsenicME0095570Jul 1, 2025Archived · health-based
ArsenicME0095570Apr 1, 2025Archived · health-based
ArsenicME0095570Jan 1, 2025Archived · health-based
Public NoticeME0095570Nov 23, 2024Resolved
Public NoticeME0095570Nov 23, 2024Resolved
ArsenicME0095570Jul 1, 2024Resolved · health-based
Consumer Confidence RuleME0095570Jul 1, 2024Resolved
ArsenicME0095570Apr 1, 2024Resolved · health-based

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 Unity

Is the water hard?

The indexed city median is 36 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.