Where does the water in 57048 come from?

Water for zip code 57048 in Montrose, South Dakota 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 57048

Montrose, South Dakota · Mccook County

239 PPM

14 GPG

Hard

0Soft60120180300+

Verified — Annual Water Quality Report

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

1 verified treated-water source

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

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 57048

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
Minnehaha Community Water Corp SD4600432	groundwater	250 PPM Very Hard USGS estimate: 443 PPM	13,435	Verified — Annual Water Quality Report
By Water District SD4600865	surface water	221 PPM Hard	13,320	Estimated — Nearby Data
Montrose SD4600217	groundwater	443 PPM Very Hard	468	Estimated — Nearby Data

Minnehaha Community Water Corp

SD4600432

Very Hard

250 PPMgroundwater13,435 servedVerified — Annual Water Quality Report

Source water: 443 PPM

By Water District

SD4600865

Hard

221 PPMsurface water13,320 servedEstimated — Nearby Data

Montrose

SD4600217

Very Hard

443 PPMgroundwater468 servedEstimated — Nearby Data

Nearby Zip Codes

57035251 57058287 57012250 57018251 57033253 57047221 57016443 57042443 57041250 57076250 573211320 57020251

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 Montrose, SD (57048).

Submit Your Data

Frequently Asked Questions

Is the water hard in Montrose, SD (57048)?

The average water hardness in 57048 is 239 PPM (14 GPG), which is classified as hard.

Do I need a water softener in 57048?

With hardness of 239 PPM, a water softener is recommended for homes in 57048.

Is hard water in 57048 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 57048?

Zip code 57048 in Montrose, South Dakota is served by 3 water systems.