Public water system profile

Washington Suburban Sanitary Commission

Explore available public water records for Washington Suburban Sanitary Commission (PWSID MD0150005). Find annual reports, results listed in those reports, official sources, and clear notes about what the records can and cannot show. This page does not show conditions at a specific tap.

View report rows

System Snapshot

Available system-level context

This snapshot shows the identity and context fields currently available for Washington Suburban Sanitary Commission (PWSID MD0150005). Read it with the source links and limitations below.

Last updated: Data reviewed:

System identity

PWSID
MD0150005
State
Maryland
Linked communities
Laurel
County context
Not listed in current record
System type
Community water system
Source water
Surface water from the Patuxent and Potomac rivers
Population served context
1,900,000
Service connections
Not listed in current record
Latest reviewed report
2025 report link found
Data updated
2026-07-29

Maryland's reviewed system record lists 1,900,000 people and 438,639 residential (RS) connections for PWSID MD0150005. The connection count is category-specific, so this profile does not present it as an all-connection total. These values are inventory context, not proof of service for an address or a current customer count.

Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.

Report-Listed Rows

Report-listed rows summarized from the latest reviewed report

2 report-listed rows are summarized for Washington Suburban Sanitary Commission. A listed row is not the same thing as a current advisory or household tap result.

Report year
2025
Rows summarized
2
Source tables represented
1
Scope
Past reporting period
Report-row preview from the latest reviewed report for Washington Suburban Sanitary Commission
Substance and testing periodReported valueRange in reportLimit or standardSource tableReport-printed status
Haloacetic Acids (HAA5)Testing period: 202548 µg/LHighest Level Found16-79MCL 60 µg/L; MCLG N/A2025 Water Quality Results - Detected Regulated ContaminantsPage 13Typical source, as printed: By-product of drinking water disinfectionViolation: No, as printed for this sample period
Total Trihalomethanes (TTHMs)Testing period: 202566 µg/LHighest Level Found14-102MCL 80 µg/L; MCLG N/A2025 Water Quality Results - Detected Regulated ContaminantsPage 13Typical source, as printed: By-product of drinking water chlorinationViolation: No, as printed for this sample period

Report row

Haloacetic Acids (HAA5)

Range in report
16-79 µg/L
Highest Level Found
48 µg/L
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCL 60 µg/L; MCLG N/A
Report-printed status
Violation: No, as printed for this sample period

Source · Page 13

2025 Water Quality Results - Detected Regulated Contaminants

Typical source, as printed: By-product of drinking water disinfection

Report row

Total Trihalomethanes (TTHMs)

Range in report
14-102 µg/L
Highest Level Found
66 µg/L
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCL 80 µg/L; MCLG N/A
Report-printed status
Violation: No, as printed for this sample period

Source · Page 13

2025 Water Quality Results - Detected Regulated Contaminants

Typical source, as printed: By-product of drinking water chlorination

Source report notes

Source: WSSC Water 2025 Water Quality Report. Retrieved 2026-07-29.

  • Applies to: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)

    Violation: No is preserved only for this 2025 LRAA row and is not a report-wide, current-compliance, advisory, safety, or household-tap conclusion.

  • Applies to: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)

    Table note: Footnote 7: Range of individual sample results. Footnote 9: Highest Locational Running Annual Average (LRAA), calculated quarterly. Footnote 10: Maximum contaminant level based on Locational Running Annual Average (LRAA), not individual sample results.

Review the linked source report for definitions, footnotes, and official wording.

Violation Records

Violation records shown on this page

This section shows 0 system-scoped violation detail records currently included for Washington Suburban Sanitary Commission. Annual reports and current notices can use different timing and terminology.

No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.

Source notes for this system mention violation-related context, but this page does not currently display separate system-scoped violation detail records.

Important limitation

Profile summary note

This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.

System profile limitations

  • The bounded preview shows only Haloacetic Acids (HAA5) and Total Trihalomethanes (TTHMs) from the 2025 report.
  • The two printed Violation: No cells remain scoped to their 2025 locational-running-annual-average rows. Footnotes 9 and 10 state that the highest values and MCL comparison use LRAA calculations rather than individual samples; these rows do not establish report-wide or current status.
  • All non-preview report results and WSSC's broad safety and violation-history marketing remain in the linked source and are not reproduced as site conclusions. The Laurel relationship cannot be reused for Gaithersburg, Rockville, Bowie, College Park, or another WSSC-related city.
  • WSSC says it draws from the Patuxent and Potomac rivers; its Patuxent plant draws from Duckett Reservoir and its Potomac plant draws from the Potomac River. This system-level description does not determine conditions at a specific tap.
  • Maryland lists 438,639 residential (RS) connections. The generic service-connection field remains absent because that category-specific value is not a reviewed total across all connection types.
  • The City of Laurel says WSSC provides water and sewer services in Montgomery and Prince George's counties, including Laurel. This supports bounded navigation only. Service eligibility is property-specific; confirm with a current bill or directly with WSSC. It does not prove exclusive coverage, every-address service, or city-boundary alignment.
  • Annual-report values describe their printed reporting period. Use the linked provider, city, and Maryland paths for time-sensitive instructions; this site does not assert whether an active notice exists.
  • This profile does not replace official utility, state, or public-health notices and does not make a current safe/unsafe conclusion.
  • This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
  • Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
  • This page summarizes available public records. It may not include every update, notice, or urgent official advisory.
  • Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.

Latest Reviewed Report

Latest reviewed report found by this site

The 2025 report found for Washington Suburban Sanitary Commission summarizes a past reporting period. It is not a live alert page.

Utility reportReport data updated:

2025 Water Quality Report

Open 2025 water quality report

The 2025 report link is available for Washington Suburban Sanitary Commission. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.

Report year
2025
Summarized entries shown
2
Source name
WSSC Water 2025 Water Quality Report
Source URL
Open report source
Source retrieved
2026-07-29
Last reviewed
2026-07-29

Use the linked source report for the full table, definitions, footnotes, and official context.

Data coverage

This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.

Latest reviewed report
2025 report link found
Report-listed rows
2 summarized report entries shown
Detailed violation records
No detailed system-scoped records displayed
Population served
Listed from reviewed source
Service connections
Not listed in current record
City context
Laurel
County context
Not listed in current record

Local Context

City and state context for this system

Washington Suburban Sanitary Commission is linked here to Laurel for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.

Linked local context

Linked communities
Laurel
County context
Not listed in current record
State context
Maryland

Related Explainers

Related contaminants and guides

Use these explainers with Washington Suburban Sanitary Commission's report year, source table, and official report. Links are limited to existing guide and contaminant pages.

How to look up your drinking water system

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How to read a water quality report

A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.

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Corrections

Suggest a correction or newer source

If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.

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Evidence

Official sources and report links

Use official federal, state, utility, or report sources before treating a page as final.

Data methodology

Review source hierarchy, missing-data handling, and record limitations.

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Data limitations

See why limited records, missing fields, and current notices need careful interpretation.

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