Water Hardness in Littleton, CO
Colorado · 5 zip codes · 47 matched water systems
City avg (weighted): 134 PPM
Dataset updated March 9, 202647 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
How this city reading is built
This city reading is a weighted rollup across 47 matched water systems and 5 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems in Littleton
These systems are matched to Littleton, CO. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Aurora City Of CO0103005 | surface water | 90 PPM Slightly HardUSGS estimate: 102 PPM | |
Arvada City Of CO0130001 | surface water | 90 PPM Slightly HardUSGS estimate: 156 PPM | |
Castle Rock Town Of CO0118010 | surface water | 200 PPM HardUSGS estimate: 42 PPM | |
Highlands Ranch Wsd CO0118015 | surface water | 200 PPM HardUSGS estimate: 108 PPM | |
Consolidated Mutual Maple Grove CO0130020 | surface water | 90 PPM Slightly HardUSGS estimate: 156 PPM |
Zip Codes in Littleton, CO
What This Means For You
Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Slightly Hard Water
Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | How to Test Your Water
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Littleton, CO.
Frequently Asked Questions
How hard is the water in Littleton, CO?
The citywide weighted average water hardness in Littleton, CO is 134 PPM (7.8 GPG), classified as moderately hard. This is based on 47 matched water systems. The gauge highlights Aurora City Of, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Littleton, CO?
With a citywide average hardness of 134 PPM, a water softener is worth considering for homes in Littleton. Confirm your tap reading before sizing equipment.
Is hard water in Littleton, CO safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve Littleton, CO?
Littleton, Colorado is served by 47 matched water systems across 5 zip codes.
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