4 community water systems serve or are based in ZIP 21154. Showing Misty Meadows 1 / Highland Hills M.H.P., the largest by reported population served. The other systems are summarized below.
- System name
- Misty Meadows 1 / Highland Hills M.H.P.
- EPA PWS ID
- MD0070247
- Location
- Street, MD
- Population served
- 460
- Water source
- Ground water
- Primary EPA source
- EPA ECHO record for MD0070247
Make sure this is the system tied to your address before using these results to make a decision about your own water. A ZIP code is not a street address.
EPA lab monitoring (UCMR 5)
EPA has no UCMR 5 (PFAS and lithium) monitoring results on file for this system.
UCMR 5 results are monitoring data, not a compliance determination. PFAS compliance is governed by separate EPA drinking-water rules. Some PFAS rule changes are proposed for 2026 — see what's proposed.
Lead at customer taps
Lead at sampled customer taps, 90th percentile (Jan. 2023–Dec. 2025): 1 ppb. EPA's current action level is 15 ppb; its health goal (MCLG) is 0.
Lead is regulated with an action level rather than a standard MCL. EPA's lead action level is 15 ppb today; the Lead and Copper Rule Improvements lower it to 10 ppb starting Nov. 1, 2027.
Violations on the federal record
The EPA record shows 15 violations, 0 health-based.
| Type | Rule / contaminant | Since |
|---|---|---|
| Record · other violation | Surface Water Treatment | 2007 |
| Record · missed required testing or reporting | Lead & Copper Rule | 2016 |
| Record · missed required testing or reporting | Nitrate | 2017 |
| Record · missed required monitoring | Coliform bacteria (Revised Total Coliform Rule) | 2018 |
| Record · missed required monitoring | Coliform bacteria (Revised Total Coliform Rule) | 2022 |
| Record · missed required testing or reporting | — | 2020 |
| Record · missed required testing or reporting | — | 2020 |
| Record · missed required testing or reporting | — | 2020 |
| Record · missed required testing or reporting | Lead | 2020 |
| Record · missed required testing or reporting | — | 2020 |
| Record · missed required testing or reporting | Antimony | 2020 |
| Record · missed required testing or reporting | Barium | 2020 |
Other systems serving or based in ZIP 21154
| System | EPA PWS ID | People served | Violations |
|---|---|---|---|
| Timber Grove MHP | MD0070245 | 76 | 14 |
| Misty Meadows 2 Mobile Home Park | MD0070249 | 70 | 8 |
| Hart Heritage | MD0120021 | 37 | 10 |
On a private well? EPA public-system data does not describe your individual well. Test your water directly.
What the numbers mean
EPA uses two different benchmarks: the legal limit (MCL) and the health goal (MCLG). They are not always the same number. Read EPA's explanation →
Open the interactive report →What the government says
Sources: U.S. EPA SDWIS (system record and violations, queried live) · EPA SDWIS lead & copper 90th-percentile results. EPA data can lag the latest tests.