Where does the water in 99631 come from?

Water for zip code 99631 in Moose Pass, Alaska is provided by 1 water system. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 99631

Moose Pass, Alaska · Kenai Peninsula Borough County

58 PPM

3.4 GPG

Soft

0Soft60120180300+

High Confidence - USGS Monitoring

Dataset updated March 9, 2026Matched to 1 water systemTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 1 matched water system. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis

1 USGS-backed source

1 matched system total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

Water source profile

Primarily surface water

Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.

Data recency

March 9, 2026

Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 99631

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

1 water system

PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.

Water System	Source	Hardness	Pop. Served	Data Source
Jber-Elmendorf AK2211423	surface water	58 PPM Soft	30,003	High Confidence - USGS Monitoring

Jber-Elmendorf

AK2211423

Soft

58 PPMsurface water30,003 servedHigh Confidence - USGS Monitoring

Nearby Zip Codes

9957258 9960558

What This Means For You

Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.

Methodology Data sources How to test your water

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Moose Pass, AK (99631).

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Frequently Asked Questions

Is the water hard in Moose Pass, AK (99631)?

The average water hardness in 99631 is 58 PPM (3.4 GPG), which is classified as soft.

Do I need a water softener in 99631?

At 58 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 99631 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 99631?

Zip code 99631 in Moose Pass, Alaska is served by 1 water system.

Learn More About Your Water

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