Water Hardness in 18036
Coopersburg, Pennsylvania · Lehigh County
Dataset updated March 9, 2026Matched to 7 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 7 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 18036
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 |
|---|---|---|---|
| Lca Allentown Division PA3390024 | surface water | 120 PPM Moderately HardUSGS estimate: 186 PPM | |
| Lca Wlsa Central Division PA3390073 | surface water | 120 PPM Moderately HardUSGS estimate: 186 PPM | |
| Swt Main System PA3390065 | surface water | 120 PPM Moderately HardUSGS estimate: 186 PPM | |
| Emmaus Borough Public Water PA3390032 | groundwater | 120 PPM Moderately HardUSGS estimate: 200 PPM | |
| Whitehall Twp Authority PA3390081 | groundwater | 120 PPM Moderately HardUSGS estimate: 58 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 Coopersburg, PA (18036).
Frequently Asked Questions
Is the water hard in Coopersburg, PA (18036)?
The average water hardness in 18036 is 121 PPM (7.1 GPG), which is classified as moderately hard.
Do I need a water softener in 18036?
With hardness of 121 PPM, a water softener is worth considering for homes in 18036.
Is hard water in 18036 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 18036?
Zip code 18036 in Coopersburg, Pennsylvania is served by 7 water systems.
Learn More About Your Water
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