Water Hardness in 19709
Middletown, Delaware · New Castle County
Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 12 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 19709
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 |
|---|---|---|---|
Artesian Water Company DE0000552 | surface water | 80 PPM Slightly HardUSGS estimate: 108 PPM | |
Wilmington Water Department DE0000663 | surface water | 80 PPM Slightly HardUSGS estimate: 92 PPM | |
Veolia Water Delaware, Inc DE0000564 | surface water | 80 PPM Slightly HardUSGS estimate: 92 PPM | |
Newark Water Department DE0000630 | surface water | 80 PPM Slightly HardUSGS estimate: 101 PPM | |
Middletown Water Department DE0000614 | surface water | 80 PPM Slightly HardUSGS estimate: 108 PPM |
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.
Slightly Hard Water
Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Middletown, DE (19709).
Frequently Asked Questions
Is the water hard in Middletown, DE (19709)?
The average water hardness in 19709 is 81 PPM (4.7 GPG), which is classified as slightly hard.
Do I need a water softener in 19709?
At 81 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 19709 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 19709?
Zip code 19709 in Middletown, Delaware is served by 12 water systems.
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