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Water Hardness in 81122

Bayfield, Colorado · La Plata County

110 PPM
6.4 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 15 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 15 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
2 USGS-backed sources
15 matched systems total for this ZIP; 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 Serving 81122

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

15 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.
Durango City Of
CO0134150
Slightly Hard
113 PPMsurface water33,787 servedHigh Confidence — USGS Monitoring
Bayfield Town Of
CO0134030
Soft
19 PPMsurface water2,300 servedEstimated — Nearby Data
Forest Lakes Md
CO0134360
Hard
188 PPMgroundwater1,699 servedEstimated — Nearby Data
Lake Durango Wa
CO0134530
Slightly Hard
113 PPMsurface water1,577 servedEstimated — County Avg
Purgatory Md
CO0134750
Slightly Hard
113 PPMgroundwater1,364 servedEstimated — County Avg
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

Recommendations are based on the displayed ZIP 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 Bayfield, CO (81122).

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Frequently Asked Questions

Is the water hard in Bayfield, CO (81122)?

The average water hardness in 81122 is 110 PPM (6.4 GPG), which is classified as slightly hard.

Do I need a water softener in 81122?

At 110 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 81122 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 81122?

Zip code 81122 in Bayfield, Colorado is served by 15 water systems.

Learn More About Your Water