Sioux Falls, SD water quality

Sioux Falls, SD is served by 13 public water systems, serving 227,841 people combined. Across those systems, we count 2 health-based violations in the last 5 years. The worst Tap Grade among them is C.

Water systems serving Sioux Falls

SIOUX FALLS

SIOUX FALLS, SD · 216,462 served

LINCOLN COUNTY RURAL WATER SYSTEM

SIOUX FALLS, SD · 5,965 served

TM RURAL WATER DISTRICT

PARKER, SD · 4,250 served

PINE LAKE HILLS

SIOUX FALLS, SD · 320 served

VALLEY VIEW ESTATES

SIOUX FALLS, SD · 230 served

PARADISE WATER COMPANY LLC

LEAD, SD · 178 served

SKYLINE HEIGHTS

SIOUX FALLS, SD · 110 served

BLACK HILLS CHILDREN'S HOME

RAPID CITY, SD · 105 served

CAMP JUDSON

KEYSTONE, SD · 100 served

BLACK HILLS RETREAT CENTER 1

DEADWOOD, SD · 36 served

GOLDEN HILLS SUBDIVISION

PIEDMONT, SD · 30 served

TWO BIT RANCH ESTATES

SPEARFISH, SD · 30 served

BLACK HILLS RETREAT CENTER 2

DEADWOOD, SD · 25 served

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Frequently asked questions

Is Sioux Falls, SD tap water safe to drink?

13 public water systems serve Sioux Falls, SD, with 2 health-based violations in the last 5 years across them. The worst Tap Grade among them is C.

Does Sioux Falls's water have lead in it?

The most recent 90th-percentile lead sample is 9 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in Sioux Falls's water?

These systems were tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.

Source: EPA SDWIS/ECHO · Data as of 2026Q2