How hard is the water in Edgemont, SD?

Utility-reported hardness is unavailable in this index. Regional environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Local water dashboard

Official source aggregation

Water quality in Edgemont, SD 57735

Q: Is tap water safe in Edgemont?

EPA SDWIS reports 1 active health-based violation record(s) among systems associated with this ZIP. Review your utility's current notice and Consumer Confidence Report.

Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Fall River County.

1 active health-based record(s) across possible systems

Largest possible serving system: Edgemont
Source water: Groundwater
County: Fall River County
Profile updated: Jun 17, 2026

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 →

At a glance

What the current records say

EPA quarter 2026Q2

Utility-reported hardness

Unavailable

Ask your provider or test your tap

All possible systems

Review needed

1 active health-based record

Measurements by utility

Choose your provider

Each result belongs to a specific system.

Utility match

3 systems

Serves 725 people system-wide

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.

Edgemont

SD4600114 · Groundwater · 725 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: 0.003 mg/L
Action level: 0.015 mg/L

20% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2023

Violation history (2)

Imported violation history for Edgemont
Rule	Status	Period
Groundwater RuleHealth-based	Resolved	Oct 20, 2021 to Nov 3, 2022
Revised Total Coliform RuleHealth-based	Resolved	Sep 5, 2021 to Nov 2, 2022

Vivos Xpoint

SD4600414 · Groundwater · 40 people served system-wide

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

1 reported active health-based record(s) for this system

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: Jul 1, 2025 to Dec 31, 2025

Violation history (10)

Imported violation history for Vivos Xpoint
Rule	Status	Period
Public Notice	Resolved	Dec 13, 2025 to Mar 4, 2026
Public Notice	Resolved	Dec 13, 2025 to Mar 4, 2026
Public Notice	Resolved	Dec 13, 2025 to Mar 4, 2026
Revised Total Coliform Rule	Archived	Dec 1, 2025 to Dec 31, 2025
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based	Unaddressed	Nov 12, 2025
Revised Total Coliform Rule	Archived	Oct 1, 2025 to Oct 31, 2025
Revised Total Coliform Rule	Archived	Sep 1, 2025 to Sep 30, 2025
Combined Radium (-226 and -228)	Archived	Jul 1, 2025 to Sep 30, 2025
Gross Alpha, Excl. Radon and U	Archived	Jul 1, 2025 to Sep 30, 2025
Combined Uranium	Archived	Jul 1, 2025 to Sep 30, 2025

Provo Area Water System

SD4600396 · Groundwater · 25 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 (3)

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, 2024 to Dec 31, 2024

Combined Radium (-226 and -228)

EPA SDWIS reported health-based violation

Reported violation

Reported level: 7 PCI/L
Maximum contaminant level: 5 PCI/L

140% of the listed benchmark

Monitoring period: Jan 1, 2026 to Mar 31, 2026

Gross Alpha, Excl. Radon and U

EPA SDWIS reported health-based violation

Reported violation

Reported level: 16 PCI/L
Maximum contaminant level: 15 PCI/L

107% of the listed benchmark

Monitoring period: Jan 1, 2026 to Mar 31, 2026

Violation history (19)

Imported violation history for Provo Area Water System
Rule	Status	Period
Combined Radium (-226 and -228)Health-based	Archived	Jan 1, 2026 to Mar 31, 2026
Gross Alpha, Excl. Radon and UHealth-based	Archived	Jan 1, 2026 to Mar 31, 2026
Revised Total Coliform Rule	Archived	Nov 1, 2025 to Nov 30, 2025
Combined Radium (-226 and -228)Health-based	Archived	Oct 1, 2025 to Dec 31, 2025
Gross Alpha, Excl. Radon and UHealth-based	Archived	Jul 1, 2025 to Sep 30, 2025
Public Notice	Unaddressed	Mar 2, 2025
Revised Total Coliform Rule	Resolved	May 1, 2024 to May 31, 2024
Revised Total Coliform Rule	Resolved	Apr 1, 2024 to Apr 30, 2024
Chlorine	Resolved	Apr 1, 2024 to Jun 30, 2024
Revised Total Coliform Rule	Resolved	Mar 1, 2024 to Mar 31, 2024
Revised Total Coliform Rule	Resolved	Feb 1, 2024 to Feb 29, 2024
Chlorine	Resolved	Jan 1, 2024 to Mar 31, 2024
Chlorine	Resolved	Oct 1, 2023 to Dec 31, 2023
Chlorine	Resolved	Jul 1, 2023 to Sep 30, 2023
Revised Total Coliform Rule	Resolved	Feb 1, 2023 to Feb 28, 2023
Chlorine	Resolved	Jan 1, 2023 to Mar 31, 2023
Revised Total Coliform Rule	Resolved	May 1, 2022 to May 31, 2022
Public Notice	Resolved	Mar 15, 2021 to Jun 24, 2021
Chlorine	Resolved	Jan 1, 2021 to Mar 31, 2021

Hardness meter

What does nearby environmental evidence show?

Very Hard

280

PPM as CaCO₃

Very Hard

PPM

280

GPG

16.4

Regional environmental evidence

USGS hardness classification scale

280 PPM

Soft
0–60Moderate
61–120Hard
121–180Very hard
181+

Parts per million

280

mg/L as CaCO₃ equivalent

Grains per gallon

16.4

1 GPG ≈ 17.1 PPM

How to use regional evidence

These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.

USGS sites used

Nearest site

24.8 mi

Observation range

May 11, 2016–May 11, 2016

Regional evidence confidence

Low

Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: 005S02E03BCCB (Well).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.

Regional context

Is 57735 typical?

These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.

Edgemont median

280 PPM

About the same

1 indexed ZIP readings · Range 280–280 PPM

South Dakota median

688 PPM

408 PPM lower

66 indexed ZIP readings · Range 8.3–1770 PPM

Evidence-first next steps

Confirm the problem before choosing treatment

This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.

Confirm the serving system

ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.

Read the current utility report

An active health-based record is present. Follow the utility's current notice and public-health instructions.

Find an official utility report →

Test for the decision you face

Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.

Convert your hardness test result →

Frequently asked

Water questions for Edgemont

Is tap water safe in Edgemont?+

EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.

How hard is the water?+

Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.

Do I need a water softener?+

Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.