PlainWater
States → South Dakota

Community Water System · PWS SD4602081

Newdale Colony

Elkton, South Dakota 57026 - drinking water served from groundwater sources to 119 people, tracked in EPA SDWIS and UCMR5.

119
People served
99
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 99 drinking-water violations at Newdale Colony, 18% of them health-based - above the South Dakota per-system average.

99
Total EPA violations on record
18%
Health-based (MCL / treatment failure)
119
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Newdale Colony

Newdale Colony is a private-owned community water system that delivers drinking water to 119 residents in Elkton, South Dakota (Brookings County) through 31 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 99 total violations for this system , of which 18 (18%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 75 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 20 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across South Dakota, EPA tracks 654 public water systems serving 915,901 people, with 56,254 cumulative violations and 8,399 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 86 violations. Statewide, 42 of 49 UCMR5-tested systems have reported PFAS detections (85.7%).

Newdale Colony's 99 violations sit above the South Dakota average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
119
Total Violations
99
Health-Based Violations
18
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
31
County
Brookings
School/Daycare
No
MCL Violations
14
Monitoring Violations
75
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 2008
Coliform (TCR) MCL 11 2001
Lead and Copper Rule TT 4 2008
Arsenic MR 4 2013
Arsenic MCL 3 2013
Gross Alpha, Excl. Radon and U MR 3 2015
Combined Uranium MR 3 2015
Combined Radium (-226 and -228) MR 3 2015
1,1,1-Trichloroethane MR 2 2019
Ethylbenzene MR 2 2019
1,1,2-Trichloroethane MR 2 2019
Xylenes, Total MR 2 2019
1,1-Dichloroethylene MR 2 2019
CHLOROBENZENE MR 2 2019
Styrene MR 2 2019
1,2-Dichloropropane MR 2 2019
Benzene MR 2 2019
p-Dichlorobenzene MR 2 2019
1,2-Dichloroethane MR 2 2019
Trichloroethylene MR 2 2019
Toluene MR 2 2019
1,2,4-Trichlorobenzene MR 2 2019
Carbon tetrachloride MR 2 2019
Tetrachloroethylene MR 2 2019
trans-1,2-Dichloroethylene MR 2 2019
o-Dichlorobenzene MR 2 2019
Consumer Confidence Rule Other 2 2006
cis-1,2-Dichloroethylene MR 2 2019
Vinyl chloride MR 2 2019
DICHLOROMETHANE MR 2 2019

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Newdale Colony.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID SD4602081 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

South Dakota Drinking Water Authority

South Dakota's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find SD regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2019 1,1,1-Trichloroethane MR 2 SDWIS / SD4602081 / 2981
2019 Ethylbenzene MR 2 SDWIS / SD4602081 / 2992
2019 1,1,2-Trichloroethane MR 2 SDWIS / SD4602081 / 2985
2019 Xylenes, Total MR 2 SDWIS / SD4602081 / 2955
2019 1,1-Dichloroethylene MR 2 SDWIS / SD4602081 / 2977
2019 CHLOROBENZENE MR 2 SDWIS / SD4602081 / 2989
2019 Styrene MR 2 SDWIS / SD4602081 / 2996
2019 1,2-Dichloropropane MR 2 SDWIS / SD4602081 / 2983
2019 Benzene MR 2 SDWIS / SD4602081 / 2990
2019 p-Dichlorobenzene MR 2 SDWIS / SD4602081 / 2969
2019 1,2-Dichloroethane MR 2 SDWIS / SD4602081 / 2980
2019 Trichloroethylene MR 2 SDWIS / SD4602081 / 2984
2019 Toluene MR 2 SDWIS / SD4602081 / 2991
2019 1,2,4-Trichlorobenzene MR 2 SDWIS / SD4602081 / 2378
2019 Carbon tetrachloride MR 2 SDWIS / SD4602081 / 2982

How Newdale Colony Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Newdale Colony South Dakota avg Federal benchmark
Total violations 99 86 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 12.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 85.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 119 1,400 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 654 regulated public water systems in South Dakota.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Newdale Colony water safe to drink? ▼
Newdale Colony (PWS ID: SD4602081) has 99 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 119 people using Groundwater sources.
How many people does Newdale Colony serve? ▼
Newdale Colony serves 119 people in Elkton, South Dakota. It is a Private-owned system using Groundwater water sources with 31 service connections.
What type of violations does Newdale Colony have? ▼
Newdale Colony has 99 total violations: 18 health-based violations (MCL exceedances or treatment failures), 75 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Newdale Colony water? ▼
No PFAS testing data is available for Newdale Colony under the EPA's UCMR5 monitoring program.
What water source does Newdale Colony use? ▼
Newdale Colony uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.