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City water profile

Fairfield water quality

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

Median indexed hardness

3PPM

One indexed ZIP

Range 3.2–3.2 PPM

State comparison
36 PPM below
State hardness rank
#107 of 110
Matched utilities
4
Active health records
2

City summary

What the indexed records say

Fairfield has 1 published ZIP profile across Somerset County. The indexed median is 3 PPM, compared with 39 PPM across Maine.

Among the 110 Mainecities with an indexed median, Fairfield ranks #107from 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
67.4 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 20, 2016 to Mar 17, 2026.

ZIP directory

Water reports in Fairfield

Open a ZIP for site-level provenance and measurements.

ZIP code

04937

Soft

3.2 PPM

Nearest site
67.4 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Kennebec Water District

PWSID ME0090750

Surface water
System population served
22,060
Last reported
May 13, 2026

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

Timberline Village

PWSID ME0095610

Groundwater
System population served
95
Last reported
May 13, 2026

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

Good Will Home Association

PWSID ME0000225

Groundwater
System population served
72
Last reported
May 13, 2026

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

Sunrise Serenity Tp

PWSID ME0092853

Groundwater
System population served
38
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

2 unique active health-based records appear among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Revised Total Coliform RuleME0092853Nov 2, 2025Unaddressed · health-based
Surface Water Treatment RuleME0090750Nov 1, 2025Archived
Surface Water Treatment RuleME0090750Oct 1, 2025Archived
Revised Total Coliform RuleME0092853Sep 1, 2025Resolved
Revised Total Coliform RuleME0092853Jan 1, 2025Addressed · health-based
Lead and Copper RuleME0000225Dec 30, 2024Resolved
E. COLIME0092853Nov 9, 2024Resolved
Consumer Confidence RuleME0000225Jul 1, 2024Resolved
Lead and Copper RuleME0092853Jul 1, 2024Resolved
NitrateME0000225Jan 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 Fairfield

Is the water hard?

The indexed city median is 3 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.