Water Hardness in 43138
Logan, Ohio · Hocking County
Dataset updated March 9, 2026Matched to 5 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 5 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 43138
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 |
|---|---|---|---|
Logan, City Of OH3700612 | groundwater | 374 PPM Very Hard | |
Old Straitsville Water Association OH6401403 | groundwater | 374 PPM Very Hard | |
Old Straitsville-Rockbridge OH3740512 | groundwater | 374 PPM Very Hard | |
Ponderosa Estates Pws OH3700312 | groundwater | 374 PPM Very Hard | |
Scenic Hills Estates OH3700912 | groundwater | 374 PPM Very Hard |
Nearby Zip Codes
What This Means For You
Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Very Hard Water - Treatment Strongly Recommended
Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Logan, OH (43138).
Frequently Asked Questions
Is the water hard in Logan, OH (43138)?
The average water hardness in 43138 is 374 PPM (21.9 GPG), which is classified as very hard.
Do I need a water softener in 43138?
With hardness of 374 PPM, a water softener is recommended for homes in 43138.
Is hard water in 43138 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 43138?
Zip code 43138 in Logan, Ohio is served by 5 water systems.
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