Frederick Water Hardness & Quality Report (2026)
Water Hardness
7.7 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
310.3 mg/L
Est. Daily Cost
$0.35
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 Frederick, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Frederick | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.2 yrs | 8.5 yrs | -39% |
| Washing Machine | 8.7 yrs | 12 yrs | -28% |
| Water Heater | 10.3 yrs | 15 yrs | -31% |
Regional Water Comparison
How Frederick compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Frederick, Colorado | 132.5 mg/L | 4.6 ppt | 🟠 Hard | reservoir |
| Firestone, Colorado | 123 mg/L | 4.3 ppt | 🟠 Hard | reservoir |
| Erie, Colorado | 116.5 mg/L | 4.1 ppt | 🟡 Moderately Hard | reservoir |
| Brighton, Colorado | 145 mg/L | 5 ppt | 🟠 Hard | reservoir |
| Longmont, Colorado | 109 mg/L | 3.9 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Frederick compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Frederick | 132.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Frederick's Water Unique?
Local geology and source profile
Frederick, Colorado, in Weld County — a Weld County town adjacent to Firestone and Dacono on the northern Denver metro Front Range — receives its water from the Town of Frederick Water Department or Little Thompson Water District, drawing from the Colorado-Big Thompson Project through the north Colorado distribution.
The moderately hard 132.5 mg/L hardness and TDS of 310.3 mg/L reflect the Weld County Colorado-Big Thompson supply's moderate character — the Precambrian Rocky Mountain Gneiss is highly insoluble, while Cretaceous Pierre Shale contributes modest dissolved minerals from its marine shale mineralogy, and the Front Range Denver metro blending occasionally adds harder groundwater (compare Firestone CO: 130/305 in Weld County comparable; Dacono CO: 134/314 in Weld County comparable; Frederick consistent moderate from the same Weld County Colorado-Big Thompson Precambrian supply). The Big Thompson watershed — Precambrian Rocky Mountain Gneiss (insoluble — primary dilutant), Cretaceous Pierre Shale (slightly calcareous — primary hardness contributor), and Quaternary Front Range alluvium (calcareous — TDS contributor).
At 132.5 mg/L with TDS 310, Frederick's water is moderately hard — scale builds in appliances over months. Semi-annual descaling is appropriate. The PFAS level of 4.6 ppt is moderate — a certified drinking water filter provides added protection. Review the Town of Frederick's annual water quality report.
Geology & Source: Frederick in Weld County draws from the Town of Frederick Water on Colorado-Big Thompson supply (Weld County, north Colorado) — the Big Thompson watershed at Weld County drains Precambrian Rocky Mountain Gneiss (insoluble) and Cretaceous Pierre Shale (slightly calcareous) — Colorado Weld County Colorado-Big Thompson Precambrian supply produces moderately hard water at 132.5 mg/L with TDS 310.3 mg/L.