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City water profile

Nondalton water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Nondalton, Alaska.

Median indexed hardness

37PPM

One indexed ZIP

Range 36.7–36.7 PPM

State comparison
46 PPM below
State hardness rank
#17 of 17
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Nondalton has 1 published ZIP profile across Lake And Peninsula Borough. The indexed median is 37 PPM, compared with 83 PPM across Alaska.

Among the 17 Alaskacities with an indexed median, Nondalton ranks #17from highest to lowest. Across all 149 state ZIP profiles, available estimates run from 36.7to 199 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
46.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 13, 2016 to Aug 17, 2017.

ZIP directory

Water reports in Nondalton

Open a ZIP for site-level provenance and measurements.

ZIP code

99640

Soft

36.7 PPM

Nearest site
46.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Nondalton

PWSID AK2260260

Surface water
System population served
205
Last reported
Jun 19, 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 RuleAK2260260Jan 1, 2026Resolved
Surface Water Treatment RuleAK2260260Jan 1, 2026Archived
Surface Water Treatment RuleAK2260260Dec 1, 2025Archived
Surface Water Treatment RuleAK2260260Dec 1, 2025Archived · health-based
ChlorineAK2260260Dec 1, 2025Archived
ChlorineAK2260260Nov 1, 2025Archived
Surface Water Treatment RuleAK2260260Nov 1, 2025Archived
Interim Enhanced Surface Water Treatment RuleAK2260260Nov 1, 2025Archived
Revised Total Coliform RuleAK2260260Oct 1, 2025Resolved
Consumer Confidence RuleAK2260260Oct 1, 2025Unaddressed

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 Nondalton

Is the water hard?

The indexed city median is 37 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.