Water Hardness in 19951
Harbeson, Delaware · Sussex County
Dataset updated March 9, 2026Matched to 8 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 8 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 19951
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 |
|---|---|---|---|
| Rehoboth Pump District (Tui) DE0000991 | groundwater | 100 PPM Slightly HardUSGS estimate: 129 PPM | |
| Bethany Bay Pump District DE0000221 | groundwater | 129 PPM Moderately Hard | |
| Dewey Beach Water Department DE0000825 | groundwater | 24 PPM Soft | |
| Rehoboth Beach Water Department DE0000723 | groundwater | 60 PPM Slightly Hard | |
| Artesian Southern Sussex Regional DE00A0323 | groundwater | 107 PPM Slightly Hard |
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 Harbeson, DE (19951).
Frequently Asked Questions
Is the water hard in Harbeson, DE (19951)?
The average water hardness in 19951 is 82 PPM (4.8 GPG), which is classified as slightly hard.
Do I need a water softener in 19951?
At 82 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 19951 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 19951?
Zip code 19951 in Harbeson, Delaware is served by 8 water systems.
Learn More About Your Water
How to Test Water Hardness at Home
Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.
8 min readWater 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.
10 min readTDS vs Water Hardness: What's the Difference?
TDS and water hardness measure different things. Learn why a TDS meter can't tell you if your water is hard, and which test you actually need.
7 min read