How hard is the water in Hidden Valley, IN?

Tap water hardness
104mg/L
6.1gpg
Moderately hard

Reported by Valley Rural Utility Company · January 2025

IN typical
178 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Hidden Valley has about 104 mg/L of hardness, which is 6.1 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Valley Rural Utility Company, dated January 2025.

Hidden Valley on the hardness scale, with nearby cities
060120180240300360+IN typical 178Clarksville: 106 mg/LClarksville 106Columbus: 107 mg/LColumbus 107Jeffersonville: 109 mg/LJeffersonville 109Greenwood: 178 mg/LGreenwood 178McCordsville: 178 mg/LMcCordsville 178Beech Grove: 178 mg/LBeech Grove 178Lawrence: 178 mg/LLawrence 178Seymour: 208 mg/LSeymour 208Greenfield: 292 mg/LGreenfield 292Franklin: 322 mg/LFranklin 322Hidden Valley 104mg/L as calcium carbonate060120180240300360+IN 178Columbus: 107 mg/LColumbus 107Jeffersonville: 109 mg/LJeffersonv. 109Greenwood: 178 mg/LGreenwood 178Seymour: 208 mg/LSeymour 208Greenfield: 292 mg/LGreenfield 292Franklin: 322 mg/LFranklin 322104 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 104 mg/L, Hidden Valley is 74 mg/L below the typical Indiana figure of 178. None of the 10 nearest cities we track has softer water. The range nearby runs from 106 mg/L in Clarksville to 322 in Franklin.

What 104 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Hidden Valley

3 people × 75 gallons a day × 6.1 gpg = 1,368 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for Hidden Valley's water system

Valley Rural Utility Company · PWSID IN5215004

No health-based violations since 2016

Serves about 5,529 people from groundwater.

Health-based
0
Monitoring or reporting
2
Open now
0

TapWaterData ties Hidden Valley to this system. EPA's service-area records do not name Hidden Valley, so check the utility printed on your water bill.

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Hidden Valley water hard?

Somewhat. It measures about 104 mg/L (6.1 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Hidden Valley in grains per gallon?

About 6.1 gpg. One grain per gallon equals 17.1 mg/L, so 104 mg/L divided by 17.1 gives 6.1.

What size water softener do I need in Hidden Valley?

For 3 people using 75 gallons each per day, 6.1 gpg works out to about 1,368 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Has the Hidden Valley water system had EPA violations?

EPA records show no health-based violations for Valley Rural Utility Company since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 53 cities in Indiana

Hardness data: TapWaterData US Water Hardness (utility report, January 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.