City water profile

Water hardness in White Rock

Find official utility reports, understand hardness, and check the water system serving your home in White Rock, South Dakota.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 2
Active health records: 0

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Rosholt

SD4600283 · Groundwater · 379 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.002 mg/L
Action level: 0.015 mg/L

13% of the listed benchmark

Monitoring period: Jan 1, 2024 to Dec 31, 2024

Violation history (19)

Imported violation history for Rosholt
Rule	Status	Period
E. COLI	Resolved	May 3, 2022 to Jul 6, 2022
Groundwater RuleHealth-based	Resolved	Dec 30, 2021 to Jul 20, 2022
Nitrite	Resolved	Oct 1, 2021 to Dec 31, 2021
Lead and Copper Rule	Resolved	Oct 1, 2021 to Jun 28, 2022
Nitrite	Resolved	Jul 1, 2021 to Sep 30, 2021
Revised Total Coliform Rule	Resolved	Jun 1, 2021 to Jun 30, 2021
Chlorine	Resolved	Apr 1, 2021 to Jun 30, 2021
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based	Resolved	Mar 31, 2021 to Jul 20, 2022
Barium	Resolved	Jan 1, 2021 to Dec 31, 2021
Cadmium	Resolved	Jan 1, 2021 to Dec 31, 2021
Chromium	Resolved	Jan 1, 2021 to Dec 31, 2021
Fluoride	Resolved	Jan 1, 2021 to Dec 31, 2021
Mercury	Resolved	Jan 1, 2021 to Dec 31, 2021
Selenium	Resolved	Jan 1, 2021 to Dec 31, 2021
Antimony, Total	Resolved	Jan 1, 2021 to Dec 31, 2021
Thallium, Total	Resolved	Jan 1, 2021 to Dec 31, 2021
Beryllium, Total	Resolved	Jan 1, 2021 to Dec 31, 2021
Nickel	Resolved	Jan 1, 2021 to Dec 31, 2021
Arsenic	Resolved	Jan 1, 2021 to Dec 31, 2021

White Rock Colony

SD4602027 · Groundwater · 108 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2025 to Dec 31, 2025

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

City summary

What the indexed records say

White Rock has 1 published ZIP profile across Roberts County. The regional-evidence median is 1012 PPM. The city does not meet the stricter comparison standard.

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: 6.7 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: May 23, 2016 to May 24, 2016.

ZIP directory

Water reports in White Rock

Open a ZIP for site-level provenance and measurements.

ZIP code

57260

Very Hard

1012 PPM

Nearest site: 6.7 mi
Confidence: Low

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other South Dakota communities

Long Hollow

Roberts County

1012 PPM median

New Effington

Roberts County

1012 PPM median

Peever

Roberts County

1590 PPM median

Wilmot

Roberts County

1590 PPM median

Corona

Roberts County

— No median

Corsica

Douglas County

1110 PPM median

Search all 234 South Dakota cities →

Questions people ask

About water in White Rock

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

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.