Public water system · AR0000206
ActiveMammoth Spring Waterworks
At a glance
Mammoth Spring Waterworks (PWSID AR0000206) is an active community water system in Fulton County, Arkansas. It reports serving 1,777 people through 711 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,777
Service connections
711
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mammoth Spring Waterworks compare with other water systems in Fulton County?
By EPA's size categories, Mammoth Spring Waterworks is a small system (501 to 3,300 people). Fulton County has 15 active public water systems, and Mammoth Spring Waterworks is the 4th-largest of them by population served. Its population served is about 70% above the county average of 1,044 people per system, and accounts for 11% of the 15,663 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 Mammoth Spring 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 Mammoth Spring Waterworks?
EPA lists Mammoth Spring 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. 8 of the 15 active systems in Fulton County (53%) are also owned by a local government.
Does Mammoth Spring Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2022. The violations listed here began between March 1991 and May 2022. By type: 8 monitoring and reporting, 3 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 of them). EPA lists 6 as resolved and 6 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 |
|---|---|---|---|---|
| 2022-05-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-06-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-06-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-03-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
The 12 most recent 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.
Mammoth Spring Waterworks: frequently asked questions
Who runs Mammoth Spring Waterworks?
Mammoth Spring Waterworks (PWSID AR0000206) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Mammoth Spring Waterworks serve?
Mammoth Spring Waterworks reports serving 1,777 people through 711 service connections in Fulton County, Arkansas.
Where does Mammoth Spring 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 Mammoth Spring Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2022. 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 Mammoth Spring 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the AR state drinking water program.
Where can I find Mammoth Spring Waterworks' water quality report?
As a community water system, Mammoth Spring 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 Fulton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cherokee Village Water Assoc | Fulton + 1 more | 4,780 | Community | Groundwater |
| Fulton County Water Authori | Fulton | 2,411 | Community | Groundwater |
| Highland Water Association | Fulton + 1 more | 2,390 | Community | Groundwater |
| Salem Waterworks | Fulton | 1,639 | Community | Groundwater |
| Ash Flat Water Company | Fulton + 1 more | 1,186 | Community | Groundwater |
| Camp Kia Kima | Fulton | 500 | Transient non-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, “Mammoth Spring Waterworks, PWSID AR0000206, Arkansas”, https://aquacensus.com/water-systems/arkansas/mammoth-spring-waterworks-ar0000206 (data as of October 1, 2026).