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City water profile

Aberdeen water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Aberdeen, South Dakota.

Median indexed hardness

1043PPM

One indexed ZIP

Range 1043–1043 PPM

State comparison
527 PPM above
State hardness rank
#39 of 222
Matched utilities
10
Active health records
1

City summary

What the indexed records say

Aberdeen has 1 published ZIP profile across Brown County. The indexed median is 1043 PPM, compared with 516 PPM across South Dakota.

Among the 222 South Dakotacities with an indexed median, Aberdeen ranks #39from highest to lowest. Across all 246 state ZIP profiles, available estimates run from 20.5to 1330 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
55.9 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Mar 29, 2016 to Jan 15, 2026.

ZIP directory

Water reports in Aberdeen

Open a ZIP for site-level provenance and measurements.

ZIP code

57401

Very Hard

1043 PPM

Nearest site
55.9 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Aberdeen

PWSID SD4600020

Surface water
System population served
27,989
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Web Water Development Association

PWSID SD4601089

Surface water
System population served
20,750
Last reported
Jun 17, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Mina Lake Sanitary District

PWSID SD4600501

Surface water
System population served
863
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Lakeside Estates

PWSID SD4600022

Surface water
System population served
460
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Country Village Park

PWSID SD4600021

Surface water
System population served
340
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Prairiewood Property Owners

PWSID SD4602125

Surface water
System population served
300
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Fordham Colony

PWSID SD4602064

Groundwater
System population served
142
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Jobee Acres

PWSID SD4600019

Surface water
System population served
108
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Pleasant Valley Estates

PWSID SD4600404

Surface water
System population served
105
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Northwood First Subdivision

PWSID SD4602342

Surface water
System population served
90
Last reported
Jun 17, 2026

EPA SDWIS explicitly lists this ZIP in the system's served geography.

Compliance history

What EPA records show

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Interim Enhanced Surface Water Treatment RuleSD4600020Feb 1, 2026Archived · health-based
ChlorineSD4600019Jan 1, 2026Archived
Stage 1 Disinfectants and Disinfection Byproducts RuleSD4600019Nov 12, 2025Unaddressed · health-based
Revised Total Coliform RuleSD4600023Oct 1, 2025Resolved
Revised Total Coliform RuleSD4600019Aug 1, 2025Resolved
Consumer Confidence RuleSD4600022Jul 1, 2025Unaddressed
Consumer Confidence RuleSD4600404Jul 1, 2025Unaddressed
Interim Enhanced Surface Water Treatment RuleSD4600020May 1, 2025Resolved · health-based
Interim Enhanced Surface Water Treatment RuleSD4600020Dec 1, 2024Resolved · health-based
Interim Enhanced Surface Water Treatment RuleSD4600020Dec 1, 2024Resolved · health-based

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Aberdeen

Is the water hard?

The indexed city median is 1043 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.