Public water system · SD4602242

Active

Sanborn Central School District

At a glance

Sanborn Central School District (PWSID SD4602242) is an active non-transient non-community water system in Sanborn County, South Dakota. It reports serving 125 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2019.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

125

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDSD4602242

System typeNon-transient non-community water system

Activity statusActive

Population served125

Service connections2

Primary water sourceGroundwater

Owner typeState government

Primacy agencySD state drinking water program

City servedLetcher

StateSouth Dakota

ZIP57359

CountySanborn County

How does Sanborn Central School District compare with other water systems in Sanborn County?

By EPA's size categories, Sanborn Central School District is a very small system (500 people or fewer). Sanborn County has 5 active public water systems, and Sanborn Central School District is the 4th-largest of them by population served. Its population served is about half of the county average of 227 people per system, and accounts for 11% of the 1,137 people reported by systems filed under the county. Across South Dakota, the 699 active systems average 1,387 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Sanborn Central School District is well below that figure.

What does “non-transient non-community water system” mean?

A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. South Dakota has 16 active non-transient non-community water systems, 2.3% 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 Sanborn Central School District?

EPA lists Sanborn Central School District as owned by a state government. 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. 1 of the 5 active systems in Sanborn County (20%) are also owned by a state government.

Does Sanborn Central School District have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2019. The violations listed here began between January 2019 and January 2019. By type: 12 monitoring and reporting. The contaminants or rules involved are Methoxychlor, o-Dichlorobenzene, 1,1,2-Trichloroethane and Heptachlor. 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
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Methoxychlorcode 2015	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	o-Dichlorobenzenecode 2968	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,2-Trichloroethanecode 2985	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlorcode 2065	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	2,4,5-TP (Silvex)code 2110	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Picloramcode 2040	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylbenzenecode 2992	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dichloromethanecode 2964	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1-Dichloroethylenecode 2977	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Alachlor (Lasso)code 2051	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	Lindane (gamma-BHC)code 2010	No	Resolved
2019-01-01	Monitoring and reportingMonitoring, Regular · code 03	trans-1,2-Dichloroethylenecode 2979	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.

Sanborn Central School District: frequently asked questions

Who runs Sanborn Central School District?

Sanborn Central School District (PWSID SD4602242) is a non-transient non-community water system owned by a state government. It is regulated by the SD state drinking water program.

How many people does Sanborn Central School District serve?

Sanborn Central School District reports serving 125 people through 2 service connections in Sanborn County, South Dakota.

Where does Sanborn Central School District 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 Sanborn Central School District 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 January 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 Sanborn Central School District'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2019. For current results, consult EPA ECHO, or the SD state drinking water program.

Where can I find Sanborn Central School District's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Sanborn Central School District is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

Other water systems in Sanborn County

Water system	County	Population served	Type	Source
Woonsocket	Sanborn	618	Community	Groundwater
Upland Colony	Sanborn	198	Community	Groundwater
Letcher	Sanborn	159	Community	Purchased surface water
Old Whites Drive in	Sanborn	37	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, “Sanborn Central School District, PWSID SD4602242, South Dakota”, https://aquacensus.com/water-systems/south-dakota/sanborn-central-school-district-sd4602242 (data as of October 1, 2026).