Mount Holly System water quality
Moderately Hard1 municipality · Burlington
Mount Holly System reports water hardness of 6.9 grains per gallon — 119 mg/L as calcium carbonate, moderately hard on the USGS scale. Because the reading is taken on finished water leaving treatment, it is the figure for all 1 town on this system rather than for any one of them.
Reported panel
| Hardness (grains per gallon) | 6.9 |
|---|---|
| Hardness (mg/L as CaCO₃) | 119 |
| Classification | Moderately Hard |
| pH | 7.0 to 7.8 |
| Total dissolved solids | Not reported in CCR |
| Disinfectant residual | Chlorine: distribution 0.7 (0.2-1.1) ppm; entry (surface plant) 0.531 (0.53-1.30) ppm |
| Sodium | Not listed as detected in this CCR |
| Chloride | Not listed as detected in this CCR |
| Sulfate | Not listed as detected in this CCR |
| Fluoride | Naturally occurring (no numeric max given in this CCR) |
| Manganese | Not listed as detected in this CCR |
| Iron | Not listed as detected in this CCR |
Source: NJ American Water — Mount Holly System, 2025 CCR (PWS ID NJ0323001).
Municipalities on this system
Questions people ask
- How hard is Mount Holly System water?
- Mount Holly System reports hardness of 6.9 grains per gallon (119 mg/L as calcium carbonate), which the USGS scale classifies as moderately hard. The figure is a system-wide reading and applies to every municipality on the system.
- Which towns are served by Mount Holly System?
- 1 municipalities on file are served by Mount Holly System, across Burlington County: Mount Holly.
- Why do towns on Mount Holly System publish the same hardness number?
- Hardness is measured at the treatment plant and at entry points to distribution, not street by street. Every town buying finished water from Mount Holly System therefore reports the same value.
- How much sodium is in Mount Holly System water?
- Mount Holly System reports sodium at Not listed as detected in this CCR. That matters for anyone on a sodium-restricted diet, and it is also what rises if an ion-exchange softener is added downstream.
- Do I need a water softener on Mount Holly System water?
- At 6.9 gpg, softening is optional — a maintenance and comfort decision rather than a necessary one.
Get your own tap tested
System-wide figures describe finished water leaving the plant. A test at your own tap is what tells you the hardness, iron and pH your plumbing actually sees.
Hardness is a nuisance parameter, not a regulated health contaminant. See the Learn hub for treatment comparisons, or how these figures are sourced.