Where does the water in 47660 come from?

Water for zip code 47660 in Oakland City, Indiana is provided by 3 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 47660

Q: Is the water hard in Oakland City, IN (47660)?

The average water hardness in 47660 is 206 PPM (12 GPG), which is classified as hard. A water softener is recommended to protect your plumbing and appliances.

Q: Do I need a water softener in 47660?

With hardness of 206 PPM, a water softener is recommended for homes in 47660. Hard water can cause scale buildup in pipes and appliances, spotty dishes, and dry skin.

Oakland City, Indiana · Gibson County

206 PPM

12 GPG

Hard

0Soft60120180300+

Estimated — Nearby Data

Dataset updated March 9, 2026Matched to 3 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 3 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

3 estimated sources

This ZIP 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 Serving 47660

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.

3 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
Princeton Water Department IN5226008	groundwater	237 PPM Hard	10,875	Estimated — Nearby Data
Pike-Gibson Water, Inc. IN5263003	surface water	179 PPM Moderately Hard	10,000	Estimated — Nearby Data
Oakland City Water Department IN5226005	surface water	179 PPM Moderately Hard	2,938	Estimated — Nearby Data

Princeton Water Department

IN5226008

Hard

237 PPMgroundwater10,875 servedEstimated — Nearby Data

Pike-Gibson Water, Inc.

IN5263003

Moderately Hard

179 PPMsurface water10,000 servedEstimated — Nearby Data

Oakland City Water Department

IN5226005

Moderately Hard

179 PPMsurface water2,938 servedEstimated — Nearby Data

Nearby Zip Codes

47683237 47654237 47584179 47619268 47649234 47598179 47585179 47613268 47567224 47648237 47590179 47670237

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 Oakland City, IN (47660).

Submit Your Data

Frequently Asked Questions

Is the water hard in Oakland City, IN (47660)?

Our estimate for 47660 is 206 PPM (12 GPG), but it is based on nearby, county, or state-level data rather than a direct treated tap-water report for this exact location. Confirm with your utility or a home test.

Do I need a water softener in 47660?

Do not size a softener from this estimate alone. Confirm the actual tap-water hardness before choosing treatment equipment.

Is hard water in 47660 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 47660?

Zip code 47660 in Oakland City, Indiana is served by 3 water systems.