Where does the water in 66449 come from?

Water for zip code 66449 in Leonardville, Kansas is provided by 2 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 66449

Leonardville, Kansas · Riley County

151 PPM

8.8 GPG

Moderately Hard

0Soft60120180300+

Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 2 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 2 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

1 verified treated-water source

2 matched systems total for this ZIP; 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 Serving 66449

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.

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.

Water System	Source	Hardness	Pop. Served	Data Source
Manhattan, City Of KS2016112	groundwater	150 PPM Moderately Hard USGS estimate: 303 PPM	54,763	Verified — Annual Water Quality Report
Leonardville, City Of KS2016120	groundwater	303 PPM Very Hard	436	Estimated — Nearby Data

Manhattan, City Of

KS2016112

Moderately Hard

150 PPMgroundwater54,763 servedVerified — Annual Water Quality Report

Source water: 303 PPM

Leonardville, City Of

KS2016120

Very Hard

303 PPMgroundwater436 servedEstimated — Nearby Data

Nearby Zip Codes

66531153 66554151 67447612 66503150 66520387 67432612 66514311 67487612 66933330 66506150 66962612 66548330

What This Means For You

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

Moderately Hard Water

Your water is moderately hard. You're likely seeing scale buildup on fixtures, spotty dishes, and may notice dry skin or hair. A water softener or conditioner can help.

Recommended Products

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

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 Leonardville, KS (66449).

Submit Your Data

Frequently Asked Questions

Is the water hard in Leonardville, KS (66449)?

The average water hardness in 66449 is 151 PPM (8.8 GPG), which is classified as moderately hard.

Do I need a water softener in 66449?

With hardness of 151 PPM, a water softener is worth considering for homes in 66449.

Is hard water in 66449 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 66449?

Zip code 66449 in Leonardville, Kansas is served by 2 water systems.