Where does the water in 43143 come from?

Water for zip code 43143 in Mount Sterling, Ohio 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 43143

Mount Sterling, Ohio · Madison County

165 PPM

9.7 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 43143

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
London City Pws OH4900712	groundwater	120 PPM Moderately Hard USGS estimate: 236 PPM	10,256	Verified — Annual Water Quality Report
Mount Sterling Village Pws OH4900812	groundwater	392 PPM Very Hard	2,059	Estimated — Nearby Data

London City Pws

OH4900712

Moderately Hard

120 PPMgroundwater10,256 servedVerified — Annual Water Quality Report

Source water: 236 PPM

Mount Sterling Village Pws

OH4900812

Very Hard

392 PPMgroundwater2,059 servedEstimated — Nearby Data

Nearby Zip Codes

43106268 43146392 43126128 43151120 43145392 43164392 43116392 43140182 43123128 43153133 43160301 43119128

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 Mount Sterling, OH (43143).

Submit Your Data

Frequently Asked Questions

Is the water hard in Mount Sterling, OH (43143)?

The average water hardness in 43143 is 165 PPM (9.7 GPG), which is classified as moderately hard.

Do I need a water softener in 43143?

With hardness of 165 PPM, a water softener is worth considering for homes in 43143.

Is hard water in 43143 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 43143?

Zip code 43143 in Mount Sterling, Ohio is served by 2 water systems.