Frederick Water Quality
Maryland
According to EPA SDWIS, Frederick, Maryland is served by 19 community water systems covering about 147,122 people. The same extract lists 12 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Frederick, Maryland is delivered through 19 EPA-regulated community water systems serving an estimated 147,122 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 12 violation records across the 19 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, TTHM, Total Haloacetic Acids (HAA5), Interim Enhanced Surface Water Treatment Rule, Long Term 2 Enhanced Surface Water Treatment Rule. 9 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Maryland drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| NEW DESIGN - FREDERICK COUNTY | 74,911 | 0 | Clean |
| CITY OF FREDERICK | 54,000 | 1 | Health |
| FORT DETRICK | 7,900 | 5 | Health |
| FOUNTAINDALE SOUTH | 2,610 | 0 | Clean |
| KNOLLS OF WINDSOR | 1,553 | 0 | Clean |
| WATERSIDE | 1,509 | 0 | Clean |
| SAM HILL ESTATES | 1,036 | 0 | Clean |
| CAMBRIDGE FARMS | 953 | 0 | Clean |
| CLOVERHILL 3 - CONSECUTIVE TO MD0100015 | 888 | 3 | Health |
| COPPERFIELD | 338 | 0 | Clean |
| COUNTRY MEADOWS OF FREDERICK | 295 | 0 | Clean |
| WHITE ROCK | 256 | 0 | Clean |
| ROSEMONT DISTRIBUTION SYSTEM | 237 | 0 | Clean |
| BRADFORD ESTATES | 178 | 0 | Clean |
| LIBERTYTOWN EAST | 140 | 0 | Clean |
| TRANQUILITY AT FREDERICKTOWNE | 105 | 2 | Health |
| LIBERTYTOWN APARTMENTS | 97 | 0 | Clean |
| POLINGS MOBILE HOME PARK | 80 | 0 | Clean |
| AMELANO MANOR | 36 | 1 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| TRANQUILITY AT FREDERICKTOWNE | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TRANQUILITY AT FREDERICKTOWNE | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| AMELANO MANOR | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| FORT DETRICK | TTHM | 2024-07-01 |
| FORT DETRICK | TTHM | 2024-07-01 |
| FORT DETRICK | TTHM | 2024-07-01 |
| FORT DETRICK | TTHM | 2020-04-01 |
| CLOVERHILL 3 - CONSECUTIVE TO MD0100015 | Total Haloacetic Acids (HAA5) | 2018-01-01 |
| CLOVERHILL 3 - CONSECUTIVE TO MD0100015 | Total Haloacetic Acids (HAA5) | 2017-10-01 |
| CLOVERHILL 3 - CONSECUTIVE TO MD0100015 | Total Haloacetic Acids (HAA5) | 2017-07-01 |
| FORT DETRICK | Interim Enhanced Surface Water Treatment Rule | 2016-07-01 |
| CITY OF FREDERICK | Long Term 2 Enhanced Surface Water Treatment Rule | 2009-10-01 |
What are Frederick's health-based records for?
Frederick's health-based violation records carry 5 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Tthm | 4 | 1 |
| Lead and Copper Rule Revisions | 3 | 2 |
| Total Haloacetic Acids (HAA5) | 3 | 1 |
| Interim Enhanced Surface Water Treatment Rule | 1 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
TRI Facilities in Frederick
| Facility | Total Releases |
|---|---|
| Lafarge Frederick Ready Mix | 571 lbs |
| Rinker Materials Hydro Conduit | 0 lbs |
| Schuster Concrete Ready Mix Llc-South St | 0 lbs |
| McCormick Paint Works Co | 0 lbs |
| American Computer Development Inc (dba Acdi) | 0 lbs |
| Griffith Energy Services Inc Frederick Bulk Plant | 0 lbs |
| Oldcastle Lawn & Garden | 0 lbs |
| Rinker Frederick Pipe | 0 lbs |
| Saputo Cheese USA Inc | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Frederick, Maryland? ▼
How many water violations does Frederick have in this EPA extract? ▼
What contaminants were found in Frederick water? ▼
How many water systems serve Frederick? ▼
Where does Frederick get its drinking water? ▼
Are there pollution sources near Frederick? ▼
How does Frederick compare in Maryland?
Of the 153 Maryland places with at least one community water system on file, Frederick ranks #2 by number of systems (19).
Either side of it: California (28), Waldorf (18), Crofton (17)
About This Data
Figures here are the current EPA SDWIS extract joined to the 19 community water systems whose service area lists Frederick, ranked against the 153 Maryland places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.