Where does the water in 48167 come from?

Water for zip code 48167 in Northville, Michigan is provided by 25 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 48167

Northville, Michigan · Wayne County

178 PPM

10.4 GPG

Moderately Hard

0Soft60120180300+

Verified - Utility Reported

Dataset updated March 9, 2026Matched to 25 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 25 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

4 verified treated-water sources

25 matched systems total for this ZIP; treated-water reports are prioritized when available.

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 48167

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.

25 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
Detroit City Of MI0001800	surface water	100 PPM Slightly Hard USGS estimate: 354 PPM	633,218	Verified - Utility Reported
Dearborn MI0001730	surface water	101 PPM Slightly Hard USGS estimate: 205 PPM	109,976	Verified - Utility Reported
Canton Township MI0001100	surface water	270 PPM Very Hard	99,627	High Confidence - USGS Monitoring
Livonia MI0003930	surface water	268 PPM Very Hard USGS estimate: 270 PPM	96,942	Verified - Utility Reported
Westland MI0007040	surface water	270 PPM Very Hard	84,094	High Confidence - USGS Monitoring

Detroit City Of

MI0001800

Slightly Hard

100 PPMsurface water633,218 servedVerified - Utility Reported

Source water: 354 PPM

Dearborn

MI0001730

Slightly Hard

101 PPMsurface water109,976 servedVerified - Utility Reported

Source water: 205 PPM

Canton Township

MI0001100

Very Hard

270 PPMsurface water99,627 servedHigh Confidence - USGS Monitoring

Livonia

MI0003930

Very Hard

268 PPMsurface water96,942 servedVerified - Utility Reported

Source water: 270 PPM

Westland

MI0007040

Very Hard

270 PPMsurface water84,094 servedHigh Confidence - USGS Monitoring

Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

48374230 48375230 48170178 48377230 48393230 48335230 48165230 48178230 48187178 48331230 48152178 48154178

What This Means For You

Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.

Methodology Data sources 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 Northville, MI (48167).

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Frequently Asked Questions

Is the water hard in Northville, MI (48167)?

The average water hardness in 48167 is 178 PPM (10.4 GPG), which is classified as moderately hard.

Do I need a water softener in 48167?

With hardness of 178 PPM, a water softener is worth considering for homes in 48167.

Is hard water in 48167 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 48167?

Zip code 48167 in Northville, Michigan is served by 25 water systems.

Water Hardness in 48167

How this ZIP reading is built

Water Systems Serving 48167

Nearby Zip Codes

What This Means For You

Frequently Asked Questions

Is the water hard in Northville, MI (48167)?

Do I need a water softener in 48167?

Is hard water in 48167 safe to drink?

How many water systems serve 48167?

Learn More About Your Water

How to Test Water Hardness at Home

Hard Water vs Soft Water: Key Differences

PPM to GPG Converter + Water Hardness Scale Explained