Maryland Water Quality Records

System identity

Start with the system number on the provider record

Maryland's search labels the identifier field Water System No. and says typing the MD prefix is not needed. Annapolis is MD0020001; its detail-page URL also contains the internal record number 56, which is not its PWSID.

Match the system name and number with your provider. County and source-water filters narrow a search but do not confirm service at an address.

1. Confirm the provider name using a bill or by contacting the provider.
2. For the Annapolis example, enter 0020001 in Water System No., then choose Search For Water Systems.
3. Compare the returned name and PWSID before opening the system detail.
4. Choose the record type you need, such as sample results, lead-and-copper summaries, or violations and enforcement actions.

Open Maryland drinking-water search →

View the official Annapolis system record →

Search scope

Check both the sample class and date range

The search form says sample searches default to the last two years unless a specific date range is supplied. It also separates all chemical/radiological samples from detection-only results and lead-and-copper summaries.

A missing row can reflect a date or sample-class choice. If a record cannot be found or the portal is unavailable, ask the provider for the specific report year, sample or notice.

Browse Maryland utility reports →

Find the Water Supply Program contact →

Annual reports

Find the utility and confirm the reporting year

MDE's report directory groups systems geographically and explains what a Consumer Confidence Report contains. Its annual reports cover the previous year's monitoring, so keep the reporting year separate from publication and our review date.

If a report is missing or you need a different format or language, contact the utility and request a usable copy of the specific year's report.

Browse Maryland water-quality reports →

Notices and assistance

Use the provider for current instructions

Start with the current communications of the provider serving your property. Check the notice's issue date, affected area and any subsequent update or lifting notice before acting on it.

WSSC Water maintains a public-notices destination for its customers; MDE provides Water Supply Program contacts. These paths have different scopes and do not constitute a complete statewide advisory list.

Check WSSC Water public notices →

Contact Maryland Water Supply →

Lead and service lines

Ask the utility about each part of the service line

MDE's inventory guidance distinguishes lead, galvanized requiring replacement, non-lead and lead status unknown. An unknown classification is unfinished material information, not a water-sample result.

Ask your provider what it has recorded for the portions of the line and how an unknown classification can be checked. The state's guidance and reporting forms are not an address-level inventory search on this page.

Read Maryland service-line guidance →

PFAS

Keep the study phase and individual sample together

MDE's PFAS page organizes its public-drinking-water study into phases and provides a map of publicly available study results. Different phases cover different groups of systems and sampling periods.

When opening a result, check the system, collection date, compound and units. A study result and dated rule guidance are separate evidence; neither a missing map entry nor a report's N/A label establishes current compliance.

Explore Maryland PFAS study resources →

Private wells and testing

Match the laboratory to the question

MDE directs residential-well owners to the county health department for local water-quality questions. Its laboratory page distinguishes public-system compliance sampling from private residential testing and lists approved laboratories, analytes and methods.

Before collecting a sample, confirm that the laboratory accepts your sample type and performs the specific test you need. Follow its collection instructions; a laboratory's listing alone does not confirm every test or service.

Read Maryland residential-well guidance →

Find Maryland laboratory resources →

Is 56 the Annapolis water-system number?

No. In the observed official detail link, 56 is an internal database key. The displayed public-water-system ID is MD0020001. Use the PWSID and provider name to identify the record.

Why might an older result be missing from a search?

Maryland's form states that sample searches default to the last two years unless you supply another date range. Sample-class filters also matter. Check those settings and ask the provider about missing records before interpreting an empty result.

Can two files have the same report title?

Yes. Baltimore's provider-hosted corrected report and the MDE repository have been recorded as separate files. Our report overview preserves the exact provider artifact used for its extraction. Check the report's version and source when comparing copies.

Does an unknown service-line material mean lead was measured in the water?

No. The inventory describes pipe material. A water test is a separate record with a sample location, date and measurement. Ask the provider to clarify an unknown material classification.