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City water profile

Rock Hill water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Rock Hill, South Carolina.

Median indexed hardness

14PPM

3 indexed ZIPs

Range 12.5–31.8 PPM

State comparison
5 PPM below
State hardness rank
#98 of 173
Matched utilities
10
Active health records
0

City summary

What the indexed records say

Rock Hill has 3 published ZIP profiles across York County. The indexed median is 14 PPM, compared with 19 PPM across South Carolina.

Among the 173 South Carolinacities with an indexed median, Rock Hill ranks #98from highest to lowest. Across all 236 state ZIP profiles, available estimates run from 4.2to 106 PPM.

The 12.5–31.8 PPM range shows how much the available ZIP estimates vary within the city label. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft3 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
8.8 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 2Low: 1

Observation window: Jul 20, 2016 to Dec 18, 2023.

ZIP directory

Water reports in Rock Hill

Open a ZIP for site-level provenance and measurements.

ZIP code

29730

Soft

12.5 PPM

Nearest site
11 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

29732

Soft

31.8 PPM

Nearest site
5.6 mi
Confidence
Low

View full ZIP evidence →

ZIP code

29733

Soft

14.2 PPM

Nearest site
8.8 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Rock Hill City Of (sc4610002)

PWSID SC4610002

Surface water
System population served
89,850
Last reported
Jun 29, 2026

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

Bgwc Wintercrest (sc4650017)

PWSID SC4650017

Groundwater
System population served
503
Last reported
Jun 29, 2026

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

Catawba Indian Nation Cws (sc4650063)

PWSID SC4650063

Surface water
System population served
446
Last reported
Jun 29, 2026

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

Bgwc Country Oaks (sc4650020)

PWSID SC4650020

Surface water
System population served
359
Last reported
Jun 29, 2026

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

Adnah Hills Mhp (sc4660115)

PWSID SC4660115

Groundwater
System population served
340
Last reported
Jun 29, 2026

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

Green Earth Pws (sc4610009)

PWSID SC4610009

Surface water
System population served
280
Last reported
Jun 29, 2026

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

Quail Meadows Park Llc (sc4660063)

PWSID SC4660063

Groundwater
System population served
221
Last reported
Jun 29, 2026

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

Bgwc Carowood (sc4650035)

PWSID SC4650035

Groundwater
System population served
212
Last reported
Jun 29, 2026

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

Bgwc Silver Lakes-Windwood (sc4650034)

PWSID SC4650034

Groundwater
System population served
191
Last reported
Jun 29, 2026

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

Bgwc Woodbridge (sc4650028)

PWSID SC4650028

Groundwater
System population served
173
Last reported
Jun 29, 2026

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

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleSC4650004Jan 1, 2026Unaddressed
Consumer Confidence RuleSC4650063Oct 1, 2025Unaddressed
Lead and Copper RuleSC4660115Oct 1, 2025Unaddressed
Consumer Confidence RuleSC4660115Oct 1, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSSC4660115Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSSC4660115Oct 17, 2024Resolved · health-based
LEAD AND COPPER RULE REVISIONSSC4660093Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSSC4660093Oct 17, 2024Resolved · health-based
Consumer Confidence RuleSC4660115Oct 1, 2024Unaddressed
Consumer Confidence RuleSC4660115Oct 1, 2023Unaddressed

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 Rock Hill

Is the water hard?

The indexed city median is 14 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.