WH

Water Hardness in Hamilton, MO

Missouri · 1 zip codes · 2 matched water systems

243 PPM
14.2 GPG
Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20262 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 2 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
2 estimated sources
This city reading needs local confirmation before equipment sizing or purchase decisions.
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 Hamilton

These systems are matched to Hamilton, MO. 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.
Hamilton Pws
MO1010342
Hard
245 PPMsurface water1,813 servedEstimated — Nearby Data
Howard County Regional Water Comm
MO2021598
Slightly Hard
112 PPMgroundwater25 servedEstimated — Nearby Data

Zip Codes in Hamilton, MO

What This Means For You

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

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 Hamilton, MO.

Submit Your Data

Frequently Asked Questions

How hard is the water in Hamilton, MO?

The citywide weighted average water hardness in Hamilton, MO is 243 PPM (14.2 GPG), classified as hard. This is based on 2 matched water systems.

Do I need a water softener in Hamilton, MO?

With a citywide average hardness of 243 PPM, a water softener is recommended for homes in Hamilton. Confirm your tap reading before sizing equipment.

Is hard water in Hamilton, MO 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 Hamilton, MO?

Hamilton, Missouri is served by 2 matched water systems across 1 zip code.

Learn More About Your Water