County · Maryland

Frederick County, Maryland: drinking water records

Name: Drinking water records for Frederick County, Maryland
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 30 community water systems across 27 ZIP codes in Frederick County, then find water-testing resources and available recent monitoring-station readings.

In focus30Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 7 of the 30 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 30 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Fort Detrick MD0100011	7,900	120	1	2	0 ppbbelow the action level
New Design - Frederick County MD0100030	74,911	120	1	0	3 ppbbelow the action level
City of Frederick MD0100015	54,000	480	1	0	1.1 ppbbelow the action level
Town of Walkersville MD0100025	8,440	120	0	0	0 ppbbelow the action level
City of Brunswick MD0100005	7,312	240	0	0	0 ppbbelow the action level
Town of Thurmont MD0100023	6,200	240	4	0	4 ppbbelow the action level
Town of Middletown MD0100018	4,288	180	8	0	2 ppbbelow the action level
Cloverhill 3 - Consecutive To MD0100015 MD0100031	888	0	0	3	0 ppbbelow the action level
Gilberts Mobile Home Park MD0100207	75	0	0	1	0 ppbbelow the action level
Amelano Manor MD0100001	36	0	0	1	0 ppbbelow the action level
Town of Emmitsburg MD0100010	2,921	0	0	0	0 ppbbelow the action level
Fountaindale South MD0100013	2,610	0	0	0	1 ppbbelow the action level
Mount Saint Marys University MD0100019	1,900	0	0	0	0 ppbbelow the action level
Knolls of Windsor MD0100041	1,553	0	0	0	0 ppbbelow the action level
Town of Myersville MD0100020	1,516	0	0	0	2.4 ppbbelow the action level
Waterside MD0100029	1,509	0	0	0	0 ppbbelow the action level
Sam Hill Estates MD0100040	1,036	0	0	0	1.7 ppbbelow the action level
Cambridge Farms MD0100033	953	0	0	0	1 ppbbelow the action level
Town of Woodsboro MD0100027	846	0	0	0	13 ppbbelow the action level
Copperfield MD0100037	338	0	0	0	1 ppbbelow the action level
Country Meadows of Frederick MD0100047	295	0	0	0	0 ppbbelow the action level
White Rock MD0100026	256	0	0	0	0 ppbbelow the action level
Bradford Estates MD0100032	178	0	0	0	0 ppbbelow the action level
Concord Estates Mobile Home Park MD0100203	150	0	0	0	0 ppbbelow the action level
Libertytown East MD0100038	140	0	0	0	4 ppbbelow the action level
Tranquility at Fredericktowne MD0100214	105	0	0	1	not reported
Libertytown Apartments MD0100036	97	0	0	0	0 ppbbelow the action level
Polings Mobile Home Park MD0100210	80	0	0	0	0 ppbbelow the action level
Spring View Mobile Home Park MD0100212	70	0	0	0	0 ppbbelow the action level
Rosemont Distribution System MD0100045	237	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Frederick County, Maryland. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Frederick County

27ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Adamstown
Ballenger Creek
Braddock Heights
Brunswick
Buckeystown
Burkittsville
Emmitsburg
Frederick
Green Valley
Jefferson
Libertytown
Linganore
Middletown
Myersville
Point of Rocks
Sabillasville
Thurmont
Union Bridge
Urbana
Walkersville
Woodsboro

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

21701Frederick
21702Frederick
21703Ballenger Creek
21704Urbana
21705Frederick
21710Adamstown
21714Braddock Heights
21716Brunswick
21717Buckeystown
21718Burkittsville
21727Emmitsburg
21754Urbana
21755Jefferson
21762Libertytown
21769Middletown
21770Green Valley
21771Green Valley
21773Myersville
21774Linganore
21777Point of Rocks
21778
21780Sabillasville
21788Thurmont
21790Point of Rocks
21791Union Bridge
21793Walkersville
21798Woodsboro

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 5 of the 7 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter12 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Frederick County

All Maryland counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.