- System name
- Town Of Middletown
- EPA PWS ID
- MD0100018
- Location
- Middletown, MD
- Population served
- 5,132
- Water source
- Ground water
- Primary EPA source
- EPA ECHO record for MD0100018
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 UCMR 5 monitoring (June 2025–Dec. 2025) detected 8 of the 30 monitored chemicals in this system's samples. Highest reported PFOS result: 6.7 ppt.
| Chemical | Highest result | EPA legal limit (MCL) | EPA health goal (MCLG) |
|---|---|---|---|
| PFOS perfluorooctanesulfonic acid | 6.7 ppt | 4 ppt | 0 |
| PFOA perfluorooctanoic acid | 4.9 ppt | 4 ppt | 0 |
| PFHxS perfluorohexanesulfonic acid | 3.5 ppt | 10 ppt | 10 ppt |
| PFPeA perfluoropentanoic acid | 9.2 ppt | No federal MCL | — |
| PFHxA perfluorohexanoic acid | 6.2 ppt | No federal MCL | — |
| PFBS perfluorobutanesulfonic acid | 5.2 ppt | No federal MCL | — |
| PFBA perfluorobutanoic acid | 5.1 ppt | No federal MCL | — |
| PFHpA perfluoroheptanoic acid | 3 ppt | No federal MCL | — |
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
EPA has no lead tap-sampling result on file for this system in the data we check.
Violations on the federal record
The EPA record shows 6 violations, 2 health-based.
| Type | Rule / contaminant | Since |
|---|---|---|
| Health-based · treatment-technique violation | Lead & Copper Rule | 1999 |
| Record · missed required testing or reporting | Lead & Copper Rule | 2017 |
| Record · missed required monitoring | Coliform bacteria (Revised Total Coliform Rule) | 2021 |
| Record · missed required testing or reporting | Lead & Copper Rule | 1999 |
| Health-based · treatment-technique violation | Lead & Copper Rule | 1999 |
| Record · missed required testing or reporting | Lead & Copper Rule | 2008 |
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 UCMR 5 final dataset. EPA data can lag the latest tests.