Is Annapolis, MD tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for City of Annapolis.
City of Annapolis supplies Annapolis (35,000 people).
Water system
City of Annapolis
35,000 people · Groundwater · EPA ID MD0020001
Buys treated water from Broad Creek Water System.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 6.3 ppb at the 90th percentile (Dec 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Maryland, 13 of 76 water systems EPA tested had PFAS above a 2024 federal limit, and 1 system were above the lead action level in results from the last five years. Maryland results.
Annapolis homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Annapolis city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Bowie 13 mi Washington Suburban Sanitary Commission | None above limits | – |
| Laurel 21 mi Washington Suburban Sanitary Commission | None above limits | – |
| College Park 23 mi Washington Suburban Sanitary Commission | None above limits | – |
| Baltimore 23 mi City of Baltimore | None above limits | 2.74 ppb |
| Rockville 36 mi Washington Suburban Sanitary Commission | None above limits | – |
| Gaithersburg 39 mi Washington Suburban Sanitary Commission | None above limits | – |
Annapolis ZIP codes (2)
- 21401
- 21403
Questions
Is Annapolis tap water safe to drink?
City of Annapolis has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Annapolis, MD?
City of Annapolis, which serves 35,000 people.
Does Annapolis tap water have PFAS?
None detected above EPA's reporting limits. City of Annapolis had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Annapolis homes have lead pipes?
Census estimates put 60% of Annapolis homes as built before 1980 (Maryland: 51%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. City of Annapolis's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.