Limerick Water Hardness & Quality Report (2026)
Water Hardness
10.9 grains per gallon
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
447.2 mg/L
Est. Daily Cost
$0.50
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Limerick, your appliances are currently losing 25% efficiency due to mineral buildup.
| Appliance | In Limerick | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.4 yrs | 8.5 yrs | -60% |
| Washing Machine | 6.7 yrs | 12 yrs | -44% |
| Water Heater | 8.1 yrs | 15 yrs | -46% |
Regional Water Comparison
How Limerick compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Limerick, Pennsylvania | 186.5 mg/L | 9.6 ppt | 🔴 Very Hard | reservoir |
| Phoenixville, Pennsylvania | 190.5 mg/L | 9.8 ppt | 🔴 Very Hard | reservoir |
| Pottstown, Pennsylvania | 118.5 mg/L | 6 ppt | 🟡 Moderately Hard | reservoir |
| West Norriton, Pennsylvania | 195 mg/L | 10 ppt | 🔴 Very Hard | reservoir |
| King of Prussia, Pennsylvania | 91 mg/L | 4.5 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Limerick compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Limerick | 186.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Limerick's Water Unique?
Local geology and source profile
Limerick, Pennsylvania, in Montgomery County — a Montgomery County township adjacent to Pottstown and Phoenixville on the Schuylkill River in the northwest Philadelphia suburbs, home of the Limerick Nuclear Generating Station — receives its municipal water from Pennsylvania American Water (PAWC), drawing from the Schuylkill River at the PAWC Montgomery County plant.
The moderately hard 186.5 mg/L hardness and TDS of 447.2 mg/L reflect the Schuylkill River's Valley and Ridge plus Triassic Piedmont watershed character. The Schuylkill River drains the Blue Mountain (Cambrian-Ordovician carbonates), the Great Valley (Cambrian Conestoga Limestone — highly calcareous), and the Triassic Newark Basin (Brunswick Formation redbeds — calcareous siltstone). The combination of Great Valley limestone drainage and Triassic calcareous redbeds produces the moderately hard, elevated-TDS Schuylkill supply.
At 186.5 mg/L, Limerick's water is moderately hard — scale builds in appliances over months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling is appropriate. The PFAS level of 9.6 ppt is very elevated and warrants a certified reverse osmosis drinking water filter — the Naval Air Station Willow Grove (Montgomery County — AFFF in the Schuylkill-Perkiomen watershed), the Limerick Nuclear Station industrial corridor, and the southeast Pennsylvania PFAS complex contribute to Limerick's very elevated readings.
Geology & Source: Limerick in Montgomery County draws from Pennsylvania American Water on the Schuylkill River (Montgomery County) — the Schuylkill drains the Great Valley (Cambrian Conestoga Limestone) and the Triassic Newark Basin (Brunswick Formation calcareous redbeds) — Pennsylvania Schuylkill Valley Cambrian-Triassic calcareous watershed produces moderately hard water at 186.5 mg/L with TDS 447 mg/L in this Montgomery County Pennsylvania township.