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City water profile

Oakfield water quality

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

Median indexed hardness

85PPM

One indexed ZIP

Range 85.3–85.3 PPM

State comparison
46 PPM above
State hardness rank
#15 of 110
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Oakfield has 1 published ZIP profile across Aroostook County. The indexed median is 85 PPM, compared with 39 PPM across Maine.

Among the 110 Mainecities with an indexed median, Oakfield ranks #15from 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

Soft0 ZIPs
Moderately hard1 ZIP
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
31.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jul 11, 2023 to Oct 11, 2023.

ZIP directory

Water reports in Oakfield

Open a ZIP for site-level provenance and measurements.

ZIP code

04763

Moderately Hard

85.3 PPM

Nearest site
31.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Pine Grove Terrace

PWSID ME0094534

Groundwater
System population served
123
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
Consumer Confidence RuleME0094534Jul 1, 2024Resolved
Lead and Copper RuleME0094534Dec 30, 2020Unaddressed

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 Oakfield

Is the water hard?

The indexed city median is 85 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.