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PARKER

PWS ID: SD4600235 · PARKER, South Dakota 57053

PARKER serves 1,025 people in PARKER, South Dakota using Groundwater water sources. It has 86 recorded EPA violations, including 7 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: PARKER

PARKER is a local-owned community water system that delivers drinking water to 1,025 residents in PARKER, South Dakota (Turner County) through 505 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 86 total violations for this system , of which 7 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 71 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is Stage 1 Disinfectants and Disinfection Byproducts Rule, recorded in 4 violations (TT, health-based). 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. PARKER's 86 violations sit at the South Dakota average. Statewide, 42 of 49 UCMR5-tested systems have reported PFAS detections (85.7%). 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
1,025
Total Violations
86
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
505
County
Turner
School/Daycare
No
MCL Violations
3
Monitoring Violations
71
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 2010
Coliform (TCR) MCL 3 1995
Consumer Confidence Rule Other 2 2007
LASSO MR 2 2008
Heptachlor epoxide MR 2 2008
Benzo(a)pyrene MR 2 2008
Methoxychlor MR 2 2008
Di(2-ethylhexyl) phthalate MR 2 2008
Hexachlorocyclopentadiene MR 2 2008
Endrin MR 2 2008
HEXACHLOROBENZENE MR 2 2008
BHC-GAMMA MR 2 2008
Chlordane MR 2 2008
Toxaphene MR 2 2008
Simazine MR 2 2008
OXAMYL MR 2 2008
Dalapon MR 2 2008
Dinoseb MR 2 2008
Pentachlorophenol MR 2 2008
Picloram MR 2 2008
Endothall MR 2 2008
Arsenic MR 2 1988
2,4-D MR 2 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2008
ETHYLENE DIBROMIDE MR 2 2008
2,4,5-TP MR 2 2008
Carbofuran MR 2 2008
Asbestos MR 2 1993
Glyphosate MR 2 2008
Total Polychlorinated Biphenyls (PCB) MR 2 2008

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 PARKER.

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 SD4600235 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
2010 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 SDWIS / SD4600235 / 0400
2008 LASSO MR 2 SDWIS / SD4600235 / 2051
2008 Heptachlor epoxide MR 2 SDWIS / SD4600235 / 2067
2008 Benzo(a)pyrene MR 2 SDWIS / SD4600235 / 2306
2008 Methoxychlor MR 2 SDWIS / SD4600235 / 2015
2008 Di(2-ethylhexyl) phthalate MR 2 SDWIS / SD4600235 / 2039
2008 Hexachlorocyclopentadiene MR 2 SDWIS / SD4600235 / 2042
2008 Endrin MR 2 SDWIS / SD4600235 / 2005
2008 HEXACHLOROBENZENE MR 2 SDWIS / SD4600235 / 2274
2008 BHC-GAMMA MR 2 SDWIS / SD4600235 / 2010
2008 Chlordane MR 2 SDWIS / SD4600235 / 2959
2008 Toxaphene MR 2 SDWIS / SD4600235 / 2020
2008 Simazine MR 2 SDWIS / SD4600235 / 2037
2008 OXAMYL MR 2 SDWIS / SD4600235 / 2036
2008 Dalapon MR 2 SDWIS / SD4600235 / 2031

How PARKER Compares

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

Metric PARKER South Dakota avg Federal benchmark
Total violations 86 86 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 7 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 1,025 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is PARKER water safe to drink? ▼
PARKER (PWS ID: SD4600235) has 86 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,025 people using Groundwater sources.
How many people does PARKER serve? ▼
PARKER serves 1,025 people in PARKER, South Dakota. It is a Local-owned system using Groundwater water sources with 505 service connections.
What type of violations does PARKER have? ▼
PARKER has 86 total violations: 7 health-based violations (MCL exceedances or treatment failures), 71 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in PARKER water? ▼
No PFAS testing data is available for PARKER under the EPA's UCMR5 monitoring program.
What water source does PARKER use? ▼
PARKER 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.

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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.

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