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Water Hardness in 99518

Anchorage, Alaska · Anchorage Borough County

30 PPM
1.8 GPG
Soft
0Soft60120180300+
Verified - Annual Water Quality Report

Dataset updated March 9, 2026Matched to 22 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 22 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
22 verified treated-water sources
22 matched systems total for this ZIP; treated-water reports are prioritized when available.
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 99518

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.

22 water systems
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.
Moa Municipality Of Anchorage
AK2210906
Soft
30 PPMsurface water221,351 servedVerified - Annual Water Quality Report
Source water: 59 PPM
Ow Dimond Estates Trailer Court
AK2211075
Soft
30 PPMgroundwater1,395 servedVerified - Annual Water Quality Report
Source water: 103 PPM
Southwood Manor Tc
AK2211677
Soft
30 PPMgroundwater1,005 servedVerified - Annual Water Quality Report
Source water: 103 PPM
Penland Park Mhp
AK2210419
Soft
30 PPMsurface water993 servedVerified - Annual Water Quality Report
Source water: 103 PPM
Manoogs Isle Mobile Home Park
AK2218630
Soft
30 PPMgroundwater935 servedVerified - Annual Water Quality Report
Source water: 58 PPM
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

9951530995173099513309950130995083099502309950658995163099507309950430995051119965233

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.

MethodologyData sourcesHow 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 Anchorage, AK (99518).

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Frequently Asked Questions

Is the water hard in Anchorage, AK (99518)?

The average water hardness in 99518 is 30 PPM (1.8 GPG), which is classified as soft.

Do I need a water softener in 99518?

At 30 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 99518 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 99518?

Zip code 99518 in Anchorage, Alaska is served by 22 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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