Where does the water in 63837 come from?

Water for zip code 63837 in Clarkton, Missouri 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 63837

Clarkton, Missouri · Dunklin County

191 PPM

11.2 GPG

Hard

0Soft60120180300+

High Confidence — USGS Monitoring

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 USGS-backed source

2 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

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 63837

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
Kennett Pws MO4010417	groundwater	207 PPM Hard	10,500	Estimated — Nearby Data
Clarkton Pws MO4010170	groundwater	39 PPM Soft	1,124	High Confidence — USGS Monitoring

Kennett Pws

MO4010417

Hard

207 PPMgroundwater10,500 servedEstimated — Nearby Data

Clarkton Pws

MO4010170

Soft

39 PPMgroundwater1,124 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

63847207 6384839 63852197 63863163 63933147 7246423 63880207 63878249 63879125 7245423 63874157 7243023

What This Means For You

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

Hard Water - Treatment Recommended

Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.

Recommended Products

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

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Water Hardness Test Kit

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

Shower Head Filter

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

Water Softener Salt

Our PickMorton Clean & Protect Also GreatDiamond Crystal Bright & Soft

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 Clarkton, MO (63837).

Submit Your Data

Frequently Asked Questions

Is the water hard in Clarkton, MO (63837)?

The average water hardness in 63837 is 191 PPM (11.2 GPG), which is classified as hard.

Do I need a water softener in 63837?

With hardness of 191 PPM, a water softener is recommended for homes in 63837.

Is hard water in 63837 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 63837?

Zip code 63837 in Clarkton, Missouri is served by 2 water systems.