Public water system · MD1041236
Active7-11 Sunderland
At a glance
7-11 Sunderland (PWSID MD1041236) is an active transient non-community water system in Calvert County, Texas. It reports serving 504 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
504
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does 7-11 Sunderland compare with other water systems in Calvert County?
By EPA's size categories, 7-11 Sunderland is a small system (501 to 3,300 people). Calvert County has 1 active public water system, and 7-11 Sunderland is the largest of them by population served. Its population served is roughly in line with the county average of 504 people per system, and accounts for 100% of the 504 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active transient non-community water system reports serving 144 people, so 7-11 Sunderland is about 3.5 times that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Texas has 1,622 active transient non-community water systems, 23% of the state's 7,078 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 5,215 Texas systems (74%) list groundwater as their primary source.
Who owns and regulates 7-11 Sunderland?
EPA lists 7-11 Sunderland as privately owned. The MD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 1 active systems in Calvert County (100%) are also privately owned.
Does 7-11 Sunderland have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for 7-11 Sunderland. For the latest compliance status, check EPA ECHO for current compliance history.
7-11 Sunderland: frequently asked questions
Who runs 7-11 Sunderland?
7-11 Sunderland (PWSID MD1041236) is a transient non-community water system privately owned. It is regulated by the MD state drinking water program.
How many people does 7-11 Sunderland serve?
7-11 Sunderland reports serving 504 people through 1 service connection in Calvert County, Texas.
Where does 7-11 Sunderland get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does 7-11 Sunderland have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is 7-11 Sunderland's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find 7-11 Sunderland's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. 7-11 Sunderland is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “7-11 Sunderland, PWSID MD1041236, Texas”, https://aquacensus.com/water-systems/texas/7-11-sunderland-md1041236 (data as of October 1, 2026).