How hard is the water in Summerville, SC?

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 Summerville, SC 29483

Q: Is tap water safe in Summerville?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

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

Historical measurement record needs context

Largest possible serving system: Summerville Cpw (sc1810003)
Source water: Surface water + Groundwater
County: Dorchester County
Profile updated: Jun 29, 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

No active flag

0 active health-based records

Measurements by utility

Choose your provider

Each result belongs to a specific system.

Utility match

9 systems

Serves 81,750 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.

Summerville Cpw (sc1810003)

SC1810003 · Surface water · 81,750 people served system-wide

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

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: 9.0e-4 mg/L
Action level: 0.015 mg/L

6% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (0)

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

Dcwa Knightsville (sc1820001)

SC1820001 · Surface water · 40,141 people served system-wide

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

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: 2.8e-4 mg/L
Action level: 0.015 mg/L

2% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (0)

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

Dcws/clay Field Drive (sc1850014)

SC1850014 · Surface water · 1,648 people served system-wide

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

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: 1.5e-4 mg/L
Action level: 0.015 mg/L

1% of the listed benchmark

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

Violation history (0)

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

Homecoming Subdivision (sc1850016)

SC1850016 · Surface water · 883 people served system-wide

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

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: 1.9e-4 mg/L
Action level: 0.015 mg/L

1% of the listed benchmark

Monitoring period: Jul 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.

Dcwa Calomet Valley (1850009)

SC1850009 · Surface water · 275 people served system-wide

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

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: 3.3e-4 mg/L
Action level: 0.015 mg/L

2% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Violation history (0)

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

Heron'S Walk Phase 1 (sc1850017)

SC1850017 · Surface water · 231 people served system-wide

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

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: 4.8e-4 mg/L
Action level: 0.015 mg/L

3% of the listed benchmark

Monitoring period: Jul 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.

Dcws Highway 17a (sc1820009)

SC1820009 · Groundwater · 200 people served system-wide

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

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: 1.6e-4 mg/L
Action level: 0.015 mg/L

1% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Violation history (2)

Imported violation history for Dcws Highway 17a (sc1820009)
Rule	Status	Period
TTHM	Resolved	Oct 1, 2021 to Sep 30, 2022
Total Haloacetic Acids (HAA5)	Resolved	Oct 1, 2021 to Sep 30, 2022

Dcws Caleb Court (sc1850015)

SC1850015 · Surface water · 156 people served system-wide

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

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: 4.6e-4 mg/L
Action level: 0.015 mg/L

3% of the listed benchmark

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

Violation history (0)

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

Sandy Run Mhp (sc0860037)

SC0860037 · Groundwater · 41 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Gross Alpha, Excl. Radon and U

EPA SDWIS reported health-based violation

Reported violation

Reported level: 18.3 PCI/L
Maximum contaminant level: 15 PCI/L

122% of the listed benchmark

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

Violation history (9)

Imported violation history for Sandy Run Mhp (sc0860037)
Rule	Status	Period
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Jan 1, 2024 to Mar 31, 2024
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Oct 1, 2022 to Dec 31, 2022
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Jul 1, 2022 to Sep 30, 2022
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Apr 1, 2022 to Jun 30, 2022
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Jan 1, 2022 to Mar 31, 2022
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Oct 1, 2021 to Dec 31, 2021
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Jul 1, 2021 to Sep 30, 2021
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Apr 1, 2021 to Jun 30, 2021
Gross Alpha, Excl. Radon and UHealth-based	Resolved	Jan 1, 2021 to Mar 31, 2021

Hardness meter

What does nearby environmental evidence show?

Soft

PPM as CaCO₃

Soft

PPM

GPG

1.5

Regional environmental evidence

USGS hardness classification scale

26 PPM

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

Parts per million

mg/L as CaCO₃ equivalent

Grains per gallon

1.5

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

9.1 mi

Observation range

Oct 25, 2017–May 12, 2026

Regional evidence confidence

High

Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: EDISTO RIVER NR GIVHANS, SC (Stream).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 29483 typical?

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

Summerville median

26 PPM

About the same

1 indexed ZIP readings · Range 26–26 PPM

South Carolina median

27 PPM

About the same

134 indexed ZIP readings · Range 3–1400 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

Use the current Consumer Confidence Report for treated-water results and official notices.

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 Summerville

Is tap water safe in Summerville?+

EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.

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.