Public water system · TX2120105
ActiveEmerald Bay MUD
At a glance
Emerald Bay MUD (PWSID TX2120105) is an active community water system in Smith County, Texas. It reports serving 1,827 people through 609 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,827
Service connections
609
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Emerald Bay MUD compare with other water systems in Smith County?
By EPA's size categories, Emerald Bay MUD is a small system (501 to 3,300 people). Smith County has 45 active public water systems. Its population served is well below the county average of 6,223 people per system, and accounts for 0.7% of the 280,017 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active community water system reports serving 6,703 people, so Emerald Bay MUD is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Texas has 4,594 active community water systems, 65% 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 Emerald Bay MUD?
EPA lists Emerald Bay MUD as owned by a local government. The TX state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 22 of the 45 active systems in Smith County (49%) are also owned by a local government.
Does Emerald Bay MUD have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 2026. The violations listed here began between May 2011 and March 2026. By type: 1 monitoring, 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Revised Total Coliform Rule, Lead and Copper Rule and Total coliform bacteria (TCR). EPA lists 3 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 3 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Emerald Bay MUD: frequently asked questions
Who runs Emerald Bay MUD?
Emerald Bay MUD (PWSID TX2120105) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Emerald Bay MUD serve?
Emerald Bay MUD reports serving 1,827 people through 609 service connections in Smith County, Texas.
Where does Emerald Bay MUD 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 Emerald Bay MUD have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in March 2026. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Emerald Bay MUD'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 records list 3 violations for this system; 1 is health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Emerald Bay MUD's water quality report?
As a community water system, Emerald Bay MUD must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Smith County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Tyler | Smith | 107,000 | Community | Surface water |
| Southern Utilities | Smith | 69,735 | Community | Purchased surface water |
| Lindale Rural WSC | Smith | 14,781 | Community | Groundwater |
| City of Whitehouse | Smith | 9,571 | Community | Purchased surface water |
| Walnut Grove WSC | Smith | 8,775 | Community | Purchased surface water |
| City of Lindale | Smith | 6,313 | Community | Groundwater |
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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, “Emerald Bay MUD, PWSID TX2120105, Texas”, https://aquacensus.com/water-systems/texas/emerald-bay-mud-tx2120105 (data as of October 1, 2026).