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Water Hardness in Franktown, CO

Colorado · 1 zip codes · 12 matched water systems

200 PPM
11.7 GPG
Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 200 PPM

Dataset updated March 9, 202612 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Castle Rock Town Of
CO0118010
Water source: surface water
Serves: 106,822
USGS environmental estimate: 42 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 12 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
12 verified treated-water sources
12 matched systems total for this city; treated-water reports are prioritized when available.
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 Franktown

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

12 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.
Castle Rock Town Of
CO0118010
Hard
200 PPMsurface water106,822 servedVerified — Annual Water Quality Report
Source water: 42 PPM
Highlands Ranch Wsd
CO0118015
Hard
200 PPMsurface water103,444 servedVerified — Annual Water Quality Report
Source water: 108 PPM
Parker Wsd
CO0118040
Hard
200 PPMsurface water75,949 servedVerified — Annual Water Quality Report
Source water: 102 PPM
Meridian Md
CO0218015
Hard
200 PPMsurface water23,415 servedVerified — Annual Water Quality Report
Source water: 102 PPM
Stonegate Md
CO0118076
Hard
200 PPMsurface water15,295 servedVerified — Annual Water Quality Report
Source water: 102 PPM
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Franktown, CO

What This Means For You

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

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Frequently Asked Questions

How hard is the water in Franktown, CO?

The citywide weighted average water hardness in Franktown, CO is 200 PPM (11.7 GPG), classified as hard. This is based on 12 matched water systems.

Do I need a water softener in Franktown, CO?

With a citywide average hardness of 200 PPM, a water softener is recommended for homes in Franktown. Confirm your tap reading before sizing equipment.

Is hard water in Franktown, 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 Franktown, CO?

Franktown, Colorado is served by 12 matched water systems across 1 zip code.

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