Public water system · SD4602342
ActiveNorthwood First Subdivision
At a glance
Northwood First Subdivision (PWSID SD4602342) is an active community water system in Brown County, South Dakota. It reports serving 90 people through 39 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
90
Service connections
39
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Northwood First Subdivision compare with other water systems in Brown County?
By EPA's size categories, Northwood First Subdivision is a very small system (500 people or fewer). Brown County has 21 active public water systems. Its population served is well below the county average of 1,813 people per system, and accounts for 0.2% of the 38,073 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 Northwood First Subdivision 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 surface water means the system buys surface water from another public water system rather than drawing its own. 142 South Dakota systems (20%) list purchased surface water as their primary source.
Who owns and regulates Northwood First Subdivision?
EPA lists Northwood First Subdivision 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. 13 of the 21 active systems in Brown County (62%) are also privately owned.
Does Northwood First Subdivision have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023. The violations listed here began between July 2015 and July 2023. By type: 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
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.
Northwood First Subdivision: frequently asked questions
Who runs Northwood First Subdivision?
Northwood First Subdivision (PWSID SD4602342) is a community water system privately owned. It is regulated by the SD state drinking water program.
How many people does Northwood First Subdivision serve?
Northwood First Subdivision reports serving 90 people through 39 service connections in Brown County, South Dakota.
Where does Northwood First Subdivision get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Northwood First Subdivision have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023. 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 Northwood First Subdivision'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. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find Northwood First Subdivision's water quality report?
As a community water system, Northwood First Subdivision 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 Brown County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aberdeen | Brown | 27,989 | Community | Surface water |
| Brown-Day-Marshall Rws | Brown + 2 more | 5,673 | Community | Groundwater |
| Groton | Brown | 1,380 | Community | Purchased surface water |
| Warner | Brown | 485 | Community | Purchased surface water |
| Lakeside Estates | Brown | 460 | Community | Purchased surface water |
| Country Village Park | Brown | 340 | Community | Purchased surface water |
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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, “Northwood First Subdivision, PWSID SD4602342, South Dakota”, https://aquacensus.com/water-systems/south-dakota/northwood-first-subdivision-sd4602342 (data as of October 1, 2026).