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St. John's Water

Drinking water quality, contact, and Consumer Confidence Report

Serving 1 city in SC ยท PWSID SC1020002

St. John's Water serves 22,592 people. 2 contaminants currently exceed health-based guidelines โ€” full breakdown below.

Monitor
2 above health guidelines
People served
22,592
Last EPA sample
2025-01-12
PFAS
Not detected above guidelines
Active violations
None

Data sources: EPA SDWIS, St. John's Water's published Consumer Confidence Report, South Carolina Department of Environmental Protection.

This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.

23K
People Served
1
City
1
Water Sources
0
MCL Violations

Official St. John's Water Resources

St. John's Water Service Area

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Service Area

This map shows the approximate service area for St. John's Water. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

St. John's Water Water Quality Grade

B
Good

Water quality is good with minor concerns.

Quality Score80/100
2
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is St. John's Water Water Safe to Drink?

St. John's Water has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 22,592 people across 1 city in SC. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

Get your water independently tested in South Carolina โ†’How does South Carolina water quality rank nationally? โ†’

Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in South Carolina

St. John's Water Service Area

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St. John's Water Contact & Information

Phone

Mailing Address

PO BOX 629 Johns Island, SC 29457

B2B Contact Data

B2B Contact Data Available

Contacts for St. John's Water

Updated Jan 2026
Sample Preview (masked)
NameTitlePhoneEmail
Jโ–ˆโ–ˆโ–ˆโ–ˆ Sโ–ˆโ–ˆโ–ˆโ–ˆWater Treatment Supervisor(555) โ–ˆโ–ˆโ–ˆ-โ–ˆโ–ˆโ–ˆโ–ˆjโ–ˆโ–ˆโ–ˆโ–ˆ@cityโ–ˆโ–ˆโ–ˆโ–ˆ.gov
Mโ–ˆโ–ˆโ–ˆโ–ˆ Jโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆUtility Director(555) โ–ˆโ–ˆโ–ˆ-โ–ˆโ–ˆโ–ˆโ–ˆmโ–ˆโ–ˆโ–ˆโ–ˆ@waterโ–ˆโ–ˆโ–ˆโ–ˆ.org
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Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

Not specified

Disinfectant Used

chloramines

St. John's Water Consumer Confidence Report

A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act ยง1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.

A current CCR for St. John's Water has not been published or validated on TapWaterData yet.

Publish your 2027 CCR

Are you the water operator here? Publish your official 2027-compliant CCR on this page โ€” residents already find it here.

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Residents: contact the utility directly using the phone number above, or check the EPAโ€™s national CCR portal. Reports are typically distributed by mail or posted on the utilityโ€™s official website.

Concerned about what's in your water?

You're viewing 2 contaminants above health-based guidelines here. Your own tap water can differ โ€” upload your test (PDF or a photo) and we'll email a full plain-English reading of every number, free.

Your upload also helps us keep local water data accurate โ€” we only ever share anonymized, area-level summaries.

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Recommended Water Filters for St. John's Water

Based on water quality data from cities served by St. John's Water, we recommend NSF-certified filters that can remove contaminants above health guidelines.

Frequently Asked Questions about St. John's Water

Is St. John's Water water safe to drink?

St. John's Water has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports for specific water quality details.

Does St. John's Water have PFAS in its water?

St. John's Water has PFAS monitoring data on record and no PFAS compounds are currently above EPA health-based guidelines. EPA finalized new PFAS drinking-water rules in 2024 requiring ongoing monitoring through 2029.

How do I pay my St. John's Water water bill?

St. John's Water bills can be paid at the utility's official payment portal: https://stjohnswaterco.myruralwater.com/bill-payment. For questions about your bill, call 843-559-0331.

How many people does St. John's Water serve?

St. John's Water serves 22,592 people across 1 city in SC.

What cities does St. John's Water serve?

St. John's Water provides water service to: Charleston, SC.

Does St. John's Water have any EPA violations?

No, St. John's Water has no MCL violations on record.

What is St. John's Water's phone number?

You can contact St. John's Water at 843-559-0331. Their mailing address is: PO BOX 629 Johns Island, SC 29457.

Where can I find St. John's Water's Consumer Confidence Report?

Community water systems must publish an annual CCR. If you're looking for St. John's Water's CCR, contact them at 843-559-0331 or check back here โ€” we update monthly. The 2027 revised CCR Rule introduces new direct-URL distribution requirements.

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How we built this page

Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data โ€” typically within days of an EPA SDWIS refresh.

Spotted a data issue? Use the Spotted something off? link at the bottom of the page โ€” corrections feed back into the next data refresh. Learn more about TapWaterData.

Are you St. John's Water? Publish your 2027 CCR

TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here โ€” it inherits this page's search authority and reaches every customer who Googles St. John's Water.

  • EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
  • Publish once a year. Agent-assisted workflow; no login setup for small systems.
  • Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
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