Cherry Creek 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
310.2 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 Cherry Creek, your appliances are currently losing 18% efficiency due to mineral buildup.
| Appliance | In Cherry Creek | 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 Cherry Creek compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Cherry Creek, Colorado | 132.5 mg/L | 4.6 ppt | 🟠 Hard | reservoir |
| Centennial, Colorado | 101.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | reservoir |
| Castlewood, Colorado | 93 mg/L | 3.4 ppt | 🟡 Moderately Hard | reservoir |
| Lone Tree, Colorado | 91 mg/L | 3.3 ppt | 🟡 Moderately Hard | reservoir |
| Greenwood Village, Colorado | 84.5 mg/L | 3.1 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Cherry Creek compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cherry Creek | 132.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
Bring Badger-quality water to your Cherry Creek home
Shop water softeners on Amazon.com →
What Makes Cherry Creek's Water Unique?
Local geology and source profile
Cherry Creek, Colorado, in Arapahoe County — an Arapahoe County neighborhood in the south Denver metro adjacent to Centennial and Greenwood Village — receives its water from Aurora Water or Denver Water, drawing from Cherry Creek Reservoir and South Platte watershed through the north-central Colorado distribution.
The moderately hard 132.5 mg/L hardness and TDS of 310.2 mg/L reflect the Arapahoe County South Platte supply's moderate Front Range character — the Precambrian Front Range Granite is largely insoluble, while Cretaceous Pierre Shale and Denver Formation calcareous mudstone contribute moderate dissolved mineral content (compare Centennial CO: 130/304 in Arapahoe County comparable; Greenwood Village CO: 134/316 in Arapahoe County comparable; Cherry Creek consistent moderate from the same Arapahoe County Cherry Creek Reservoir South Platte Front Range supply). The South Platte watershed at Arapahoe County — Precambrian Front Range Granite (insoluble — primary dilutant), Cretaceous Pierre Shale (slightly calcareous — primary hardness contributor), and Quaternary South Platte alluvium (calcareous — TDS contributor).
At 132.5 mg/L with TDS 310, Cherry Creek's water is moderately hard — scale builds in appliances. Semi-annual descaling is appropriate. The PFAS level of 4.6 ppt is moderate — a certified drinking water filter provides added protection. Review Aurora Water's annual water quality report.
Geology & Source: Cherry Creek in Arapahoe County draws from the Aurora Water on Cherry Creek Reservoir (Arapahoe County, north Colorado) — the South Platte watershed drains Precambrian Front Range Granite (insoluble) and Cretaceous Pierre Shale (slightly calcareous) — Colorado Arapahoe County Cherry Creek Reservoir South Platte Front Range supply produces moderately hard water at 132.5 mg/L with TDS 310.2 mg/L.