Water Hardness in 99725
Ester, Alaska · Fairbanks North Star Borough County
Dataset updated March 9, 2026Matched to 3 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 3 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.
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 99725
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.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Golden Heart Utilities AK2310730 | groundwater | 70 PPM Slightly HardUSGS estimate: 114 PPM | |
| College Utilities Corporation AK2310900 | groundwater | 70 PPM Slightly HardUSGS estimate: 114 PPM | |
| Ft Wainwright - Main Post AK2310918 | groundwater | 70 PPM Slightly HardUSGS estimate: 96 PPM |
Nearby Zip Codes
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.
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 Ester, AK (99725).
Frequently Asked Questions
Is the water hard in Ester, AK (99725)?
The average water hardness in 99725 is 70 PPM (4.1 GPG), which is classified as slightly hard.
Do I need a water softener in 99725?
At 70 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 99725 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 99725?
Zip code 99725 in Ester, Alaska is served by 3 water systems.
Learn More About Your Water
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