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Water Hardness in Duncansville, PA

Pennsylvania · 1 zip codes · 4 matched water systems

127 PPM
7.4 GPG
Moderately Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20264 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 4 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
4 USGS-backed sources
4 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 Duncansville

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

4 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.
Altoona Water Authority
PA4070023
Moderately Hard
122 PPMsurface water62,500 servedHigh Confidence — USGS Monitoring
Blair Twp Water & Sewer Auth
PA4070011
Soft
43 PPMsurface water2,550 servedHigh Confidence — USGS Monitoring
Duncansville Muni Water Auth
PA4070012
Very Hard
339 PPMgroundwater2,350 servedHigh Confidence — USGS Monitoring
Bel Air Park Apts
PA4070060
Very Hard
339 PPMgroundwater44 servedHigh Confidence — USGS Monitoring

Zip Codes in Duncansville, PA

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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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Duncansville, PA.

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Frequently Asked Questions

How hard is the water in Duncansville, PA?

The citywide weighted average water hardness in Duncansville, PA is 127 PPM (7.4 GPG), classified as moderately hard. This is based on 4 matched water systems.

Do I need a water softener in Duncansville, PA?

With a citywide average hardness of 127 PPM, a water softener is worth considering for homes in Duncansville. Confirm your tap reading before sizing equipment.

Is hard water in Duncansville, PA 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 Duncansville, PA?

Duncansville, Pennsylvania is served by 4 matched water systems across 1 zip code.

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