Public water system · NC0136231
ActiveKnollwood S/D
At a glance
Knollwood S/D (PWSID NC0136231) is an active community water system in Gaston County, North Carolina. It reports serving 46 people through 18 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in July 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
46
Service connections
18
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Knollwood S/D compare with other water systems in Gaston County?
By EPA's size categories, Knollwood S/D is a very small system (500 people or fewer). Gaston County has 247 active public water systems. Its population served is well below the county average of 814 people per system, and accounts for less than 0.1% of the 201,158 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 Knollwood 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 Knollwood S/D?
EPA lists Knollwood 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. 225 of the 247 active systems in Gaston County (91%) are also privately owned.
Does Knollwood S/D have drinking water violations?
EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in July 2011. The violations listed here began between July 1985 and July 2011. By type: 9 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-01-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 1985-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
All 11 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.
Knollwood S/D: frequently asked questions
Who runs Knollwood S/D?
Knollwood S/D (PWSID NC0136231) is a community water system privately owned. It is regulated by the NC state drinking water program.
How many people does Knollwood S/D serve?
Knollwood S/D reports serving 46 people through 18 service connections in Gaston County, North Carolina.
Where does Knollwood 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 Knollwood S/D have any drinking water violations?
EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in July 2011. 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 Knollwood 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 11 violations for this system; 1 is health-based, and the most recent began in July 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the NC state drinking water program.
Where can I find Knollwood S/D's water quality report?
As a community water system, Knollwood 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 Gaston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Two Rivers Utilities | Gaston | 96,714 | Community | Surface water |
| Mount Holly, City of | Gaston | 19,200 | Community | Surface water |
| Belmont, City of | Gaston | 17,477 | Community | Surface water |
| Dallas, Town of | Gaston | 8,212 | Community | Surface water |
| Cherryville, City of | Gaston | 6,353 | Community | Surface water |
| Bessemer City, City of | Gaston | 5,730 | Community | Surface water |
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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, “Knollwood S/D, PWSID NC0136231, North Carolina”, https://aquacensus.com/water-systems/north-carolina/knollwood-s-d-nc0136231 (data as of October 1, 2026).