Public water system · SD4600252

Active

Ramona

At a glance

Ramona (PWSID SD4600252) is an active community water system in Lake County, South Dakota. It reports serving 159 people through 107 service connections. Its primary water source is purchased 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 2019.

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

Population served

159

Service connections

107

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDSD4600252

System typeCommunity water system

Activity statusActive

Population served159

Service connections107

Primary water sourcePurchased groundwater

Owner typeLocal government

Primacy agencySD state drinking water program

City servedArlington

StateSouth Dakota

ZIP57212

CountyLake County

How does Ramona compare with other water systems in Lake County?

By EPA's size categories, Ramona is a very small system (500 people or fewer). Lake County has 5 active public water systems, and Ramona is the 5th-largest of them by population served. Its population served is well below the county average of 1,956 people per system, and accounts for 1.6% of the 9,782 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 Ramona 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 100 South Dakota systems (14%) list purchased groundwater as their primary source.

Who owns and regulates Ramona?

EPA lists Ramona as owned by a local 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. 4 of the 5 active systems in Lake County (80%) are also owned by a local government.

Does Ramona 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 2019. The violations listed here began between January 2018 and May 2019. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is 1,2-Dibromo-3-chloropropane (DBCP) (3 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
2019-05-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2018-10-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dibromo-3-chloropropane (DBCP)code 2931	No	Resolved
2018-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2018-10-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylene dibromide (EDB)code 2946	No	Resolved
2018-07-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dibromo-3-chloropropane (DBCP)code 2931	No	Resolved
2018-07-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylene dibromide (EDB)code 2946	No	Resolved
2018-06-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2018-06-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2018-04-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dibromo-3-chloropropane (DBCP)code 2931	No	Resolved
2018-04-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylene dibromide (EDB)code 2946	No	Resolved
2018-01-01	Monitoring and reportingMonitoring, Regular · code 03	Chlordanecode 2959	No	Resolved
2018-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2,4-Trichlorobenzenecode 2378	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.

Ramona: frequently asked questions

Who runs Ramona?

Ramona (PWSID SD4600252) is a community water system owned by a local government. It is regulated by the SD state drinking water program.

How many people does Ramona serve?

Ramona reports serving 159 people through 107 service connections in Lake County, South Dakota.

Where does Ramona get its water?

EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.

Does Ramona 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 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 Ramona'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 May 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.

Where can I find Ramona's water quality report?

As a community water system, Ramona 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 Lake County

Water system	County	Population served	Type	Source
Madison	Lake	6,191	Community	Groundwater
Kingbrook Iii Rural Water System	Lake	2,888	Community	Groundwater
Chester Sanitary District	Lake	363	Community	Purchased groundwater
Wentworth	Lake	181	Community	Purchased 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, “Ramona, PWSID SD4600252, South Dakota”, https://aquacensus.com/water-systems/south-dakota/ramona-sd4600252 (data as of October 1, 2026).