Public water system · SD4602259
Active76 Ranch Estates
At a glance
76 Ranch Estates (PWSID SD4602259) is an active community water system in Lawrence County, South Dakota. It reports serving 40 people through 16 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
16
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does 76 Ranch Estates compare with other water systems in Lawrence County?
By EPA's size categories, 76 Ranch Estates is a very small system (500 people or fewer). Lawrence County has 73 active public water systems. Its population served is well below the county average of 373 people per system, and accounts for 0.1% of the 27,194 people reported by systems filed under the county. Across South Dakota, the 699 active systems average 1,387 people each. Nationally, the average active community water system reports serving 6,703 people, so 76 Ranch Estates 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. South Dakota has 510 active community water systems, 73% of the state's 699 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 431 South Dakota systems (62%) list groundwater as their primary source.
Who owns and regulates 76 Ranch Estates?
EPA lists 76 Ranch Estates as privately owned. The SD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 60 of the 73 active systems in Lawrence County (82%) are also privately owned.
Does 76 Ranch Estates have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2011. The violations listed here began between October 2006 and January 2011. By type: 6 monitoring and reporting, 4 contaminant level above the legal limit and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2011-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-06-19 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2009-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-07-14 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2006-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-10-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Resolved |
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.
76 Ranch Estates: frequently asked questions
Who runs 76 Ranch Estates?
76 Ranch Estates (PWSID SD4602259) is a community water system privately owned. It is regulated by the SD state drinking water program.
How many people does 76 Ranch Estates serve?
76 Ranch Estates reports serving 40 people through 16 service connections in Lawrence County, South Dakota.
Where does 76 Ranch Estates 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 76 Ranch Estates have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 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 76 Ranch Estates' 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, 4 are health-based, and the most recent began in January 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find 76 Ranch Estates' water quality report?
As a community water system, 76 Ranch Estates 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 |
|---|---|---|---|---|
| Spearfish | Lawrence | 13,803 | Community | Groundwater |
| Lead | Lawrence | 2,982 | Community | Purchased surface water |
| Deadwood | Lawrence | 1,156 | Community | Purchased surface water |
| Whitewood | Lawrence | 879 | Community | Groundwater |
| Guadalajara Mexican Restaurant | Lawrence | 630 | Transient non-community | Groundwater |
| Spearfish Canyon Resort LLC | Lawrence | 492 | 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, “76 Ranch Estates, PWSID SD4602259, South Dakota”, https://aquacensus.com/water-systems/south-dakota/76-ranch-estates-sd4602259 (data as of October 1, 2026).