Water Hardness in Edison, New Jersey
The water hardness in Edison, NJ is 90 ppm (5.3 grains per gallon), which is classified as Slightly Hard . Water in Edison is supplied by Middlesex Water Company and comes primarily from a blend of surface water and groundwater sources. While a water softener is not strictly necessary at this hardness level, some homeowners in Edison opt for a conditioner to reduce minor spotting and improve soap performance.
Water Quality Details for Edison, NJ
What 90 PPM Means for Your Home in Edison
At 90 ppm, Edison's water is classified as slightly hard. You may notice minor water spots on dishes and glassware after they dry, and there might be a thin film on glass shower doors over time. However, these effects are cosmetic rather than damaging. Your plumbing and appliances are not at significant risk of scale damage at this level. Most households in Edison operate perfectly well without a water softener. If the minor spotting bothers you, a simple rinse aid in your dishwasher or an occasional vinegar wipe on fixtures is usually sufficient. Some homeowners with sensitive skin or eczema may still prefer a softener for bathing comfort.
Water Source and Treatment at Middlesex Water Company
Edison's water is supplied by Middlesex Water Company and sourced primarily from a combination of surface water and groundwater sources. This blended approach helps the utility balance water quality, availability, and seasonal demand. The 90 ppm hardness in Edison reflects the weighted average of these different sources, and actual hardness may fluctuate slightly depending on which sources are active at any given time. The water has a pH of 7.3, which is near neutral, and total dissolved solids of 140 ppm (moderate).
Estimated Cost of Hard Water in Edison
The Water Quality Association estimates that hard water costs the average household about 30 cents per grain per gallon per person per year in combined expenses from increased soap and detergent usage, reduced appliance efficiency, higher energy bills from scale-encrusted water heaters, and premature appliance and plumbing replacement. For a typical Edison household of 2.5 people with water at 90 ppm (5.3 gpg), this translates to approximately $4 per year. Over 10 years, that adds up to $40 in avoidable costs — often more than the total cost of installing and operating a water softener.
Recommended Treatment Solutions for Edison
Based on the water hardness of 90 ppm in Edison, the following treatment options are recommended, ranked by effectiveness for your specific hardness level.
Other Cities in New Jersey
Compare Edison's water hardness with other cities in New Jersey. Water hardness can vary significantly within a state depending on local geology and water sources.
| City | Hardness (PPM) | GPG | Level | Source |
|---|---|---|---|---|
| Edison | 90 ppm | 5.3 | Slightly Hard | Mixed |
| Cherry Hill | 175 ppm | 10.2 | Moderately Hard | Ground |
| Atlantic City | 155 ppm | 9.1 | Moderately Hard | Ground |
| Toms River | 140 ppm | 8.2 | Moderately Hard | Ground |
| Trenton | 110 ppm | 6.4 | Slightly Hard | Mixed |
| Woodbridge | 100 ppm | 5.8 | Slightly Hard | Mixed |
| Jersey City | 35 ppm | 2 | Soft | Surface |
| Newark | 30 ppm | 1.8 | Soft | Surface |
Test Your Water for Accurate Results
The hardness value shown for Edison (90 ppm) is based on the most recent available data from Middlesex Water Company. Your actual water hardness may vary depending on your neighborhood, the age of your plumbing, and seasonal changes in water supply. For the most accurate measurement, we recommend testing your tap water with a home test kit or requesting a current water quality report from Middlesex Water Company. Visit our hardness scale guide to understand what your test results mean, or explore all treatment solutions to find the right option for your home.