Public water system · NC0392098
ActiveThompson Mills S/D
At a glance
Thompson Mills S/D (PWSID NC0392098) is an active community water system in Wake County, North Carolina. It reports serving 460 people through 181 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
460
Service connections
181
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Thompson Mills S/D compare with other water systems in Wake County?
By EPA's size categories, Thompson Mills S/D is a very small system (500 people or fewer). Wake County has 441 active public water systems. Its population served is well below the county average of 2,633 people per system, and accounts for less than 0.1% of the 1,161,234 people reported by systems filed under the county. Across North Carolina, the 5,087 active systems average 1,971 people each. Nationally, the average active community water system reports serving 6,703 people, so Thompson Mills S/D 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. North Carolina has 2,031 active community water systems, 40% of the state's 5,087 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,566 North Carolina systems (90%) list groundwater as their primary source.
Who owns and regulates Thompson Mills S/D?
EPA lists Thompson Mills S/D as privately owned. The NC state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 421 of the 441 active systems in Wake County (95%) are also privately owned.
Does Thompson Mills S/D have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2024. The violations listed here began between October 2000 and July 2024. By type: 2 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 2 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2000-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
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.
Thompson Mills S/D: frequently asked questions
Who runs Thompson Mills S/D?
Thompson Mills S/D (PWSID NC0392098) is a community water system privately owned. It is regulated by the NC state drinking water program.
How many people does Thompson Mills S/D serve?
Thompson Mills S/D reports serving 460 people through 181 service connections in Wake County, North Carolina.
Where does Thompson Mills S/D 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 Thompson Mills S/D have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2024. 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 Thompson Mills S/D'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; none is health-based, and the most recent began in July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NC state drinking water program.
Where can I find Thompson Mills S/D's water quality report?
As a community water system, Thompson Mills S/D 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 Wake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Raleigh, City of | Wake | 650,000 | Community | Surface water |
| Cary, Town of | Wake | 227,300 | Community | Surface water |
| Apex, Town of | Wake | 83,001 | Community | Purchased surface water |
| Holly Springs, Town of | Wake | 51,947 | Community | Purchased surface water |
| Fuquay-Varina, Town of | Wake | 42,954 | Community | Purchased surface water |
| Bayleaf Master | Wake | 16,715 | 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, “Thompson Mills S/D, PWSID NC0392098, North Carolina”, https://aquacensus.com/water-systems/north-carolina/thompson-mills-s-d-nc0392098 (data as of October 1, 2026).