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Water Hardness in Killduff, IA

Iowa · 1 zip codes · 2 matched water systems

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

City avg (weighted): 255 PPM

Dataset updated March 9, 20262 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Ia Regional Utilities Assoc (Waverly)
IA0990701
Water source: groundwater
Serves: 37,820
USGS environmental estimate: 380 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 2 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
1 verified treated-water source
2 matched systems total for this city; treated-water reports are prioritized when available.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 Killduff

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

2 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.
Ia Regional Utilities Assoc (Waverly)
IA0990701
Hard
200 PPMgroundwater37,820 servedVerified — Annual Water Quality Report
Source water: 380 PPM
Newton Water Supply
IA5059064
Very Hard
380 PPMgroundwater16,518 servedHigh Confidence — USGS Monitoring

Zip Codes in Killduff, IA

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 Killduff, IA.

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Frequently Asked Questions

How hard is the water in Killduff, IA?

The citywide weighted average water hardness in Killduff, IA is 255 PPM (14.9 GPG), classified as very hard. This is based on 2 matched water systems. The gauge highlights Ia Regional Utilities Assoc (Waverly), a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Killduff, IA?

With a citywide average hardness of 255 PPM, a water softener is recommended for homes in Killduff. Confirm your tap reading before sizing equipment.

Is hard water in Killduff, IA 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 Killduff, IA?

Killduff, Iowa is served by 2 matched water systems across 1 zip code.

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