Public water system · AR0000302
ActiveBlack Rock Waterworks
At a glance
Black Rock Waterworks (PWSID AR0000302) is an active community water system in Lawrence County, Arkansas. It reports serving 1,034 people through 431 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,034
Service connections
431
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Black Rock Waterworks compare with other water systems in Lawrence County?
By EPA's size categories, Black Rock Waterworks is a small system (501 to 3,300 people). Lawrence County has 11 active public water systems, and Black Rock Waterworks is the 5th-largest of them by population served. Its population served is about half of the county average of 1,935 people per system, and accounts for 4.9% of the 21,285 people reported by systems filed under the county. Across Arkansas, the 853 active systems average 3,592 people each. Nationally, the average active community water system reports serving 6,703 people, so Black Rock Waterworks 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. Arkansas has 660 active community water systems, 77% of the state's 853 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 461 Arkansas systems (54%) list groundwater as their primary source.
Who owns and regulates Black Rock Waterworks?
EPA lists Black Rock Waterworks as owned by a local government. The AR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 11 of the 11 active systems in Lawrence County (100%) are also owned by a local government.
Does Black Rock Waterworks have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 2019. The violations listed here began between May 1991 and September 2019. By type: 2 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 2 as resolved and 2 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 |
|---|---|---|---|---|
| 2019-09-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-05-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 4 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.
Black Rock Waterworks: frequently asked questions
Who runs Black Rock Waterworks?
Black Rock Waterworks (PWSID AR0000302) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Black Rock Waterworks serve?
Black Rock Waterworks reports serving 1,034 people through 431 service connections in Lawrence County, Arkansas.
Where does Black Rock Waterworks 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 Black Rock Waterworks have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in September 2019. 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 Black Rock Waterworks' 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 4 violations for this system; none is health-based, and the most recent began in September 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the AR state drinking water program.
Where can I find Black Rock Waterworks' water quality report?
As a community water system, Black Rock Waterworks 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 Lawrence County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lawrence Co Reg Water Dist | Lawrence + 2 more | 7,469 | Community | Purchased surface water |
| Walnut Ridge Waterworks | Lawrence | 5,823 | Community | Purchased surface water |
| Hoxie Water Department | Lawrence | 2,666 | Community | Purchased surface water |
| Strawberry Waterworks | Lawrence | 1,093 | Community | Groundwater |
| Imboden Waterworks | Lawrence | 825 | Community | Groundwater |
| Lynn Waterworks | Lawrence | 773 | 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, “Black Rock Waterworks, PWSID AR0000302, Arkansas”, https://aquacensus.com/water-systems/arkansas/black-rock-waterworks-ar0000302 (data as of October 1, 2026).