WH

Water Hardness in Marble, CO

Colorado · 1 zip codes · 24 matched water systems

289 PPM
16.9 GPG
Very Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 202624 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 24 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
21 USGS-backed sources
24 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

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 Marble

These systems are matched to Marble, CO. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

24 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Carbondale Town Of
CO0123167
Hard
206 PPMsurface water6,700 servedHigh Confidence — USGS Monitoring
Battlement Mesa Md
CO0123133
Very Hard
410 PPMsurface water4,100 servedEstimated — County Avg
El Jebel Mhp
CO0119246
Hard
206 PPMsurface water1,962 servedHigh Confidence — USGS Monitoring
Roaring Fork Wsd
CO0123125
Very Hard
410 PPMgroundwater1,912 servedEstimated — County Avg
Mitchell Cooper Ditch Pipeline
CO0123510
Very Hard
410 PPMsurface water1,028 servedEstimated — County Avg
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Marble, CO

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Marble, CO.

Submit Your Data

Frequently Asked Questions

How hard is the water in Marble, CO?

The citywide weighted average water hardness in Marble, CO is 289 PPM (16.9 GPG), classified as very hard. This is based on 24 matched water systems.

Do I need a water softener in Marble, CO?

With a citywide average hardness of 289 PPM, a water softener is recommended for homes in Marble. Confirm your tap reading before sizing equipment.

Is hard water in Marble, 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 Marble, CO?

Marble, Colorado is served by 24 matched water systems across 1 zip code.

Learn More About Your Water