PINE RIDGE WATER SYSTEM

Q: Is PINE RIDGE WATER SYSTEM water safe to drink?

PINE RIDGE WATER SYSTEM (PWS ID: 084690475) has 114 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 7,482 people using Groundwater sources.

Q: What type of violations does PINE RIDGE WATER SYSTEM have?

PINE RIDGE WATER SYSTEM has 114 total violations: 23 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in PINE RIDGE WATER SYSTEM water?

Yes. UCMR5 testing detected 1 PFAS compound in PINE RIDGE WATER SYSTEM's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does PINE RIDGE WATER SYSTEM use?

PINE RIDGE WATER SYSTEM uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 5, 2026

PWS ID: 084690475 · PINE RIDGE, 08 57770

PINE RIDGE WATER SYSTEM serves 7,482 people in PINE RIDGE, 08 using Groundwater water sources. It has 114 recorded EPA violations, including 23 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: PINE RIDGE WATER SYSTEM

PINE RIDGE WATER SYSTEM is a native american-owned community water system that delivers drinking water to 7,482 residents in PINE RIDGE, 08 through 1,151 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 114 total violations for this system , of which 23 (20%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 90 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 21 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 54.9 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across 08, EPA tracks 160 public water systems serving 144,980 people, with 13,068 cumulative violations and 1,547 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 81.7 violations. PINE RIDGE WATER SYSTEM's 114 violations sit above the 08 average. Statewide, 10 of 13 UCMR5-tested systems have reported PFAS detections (76.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served

7,482

Total Violations

114

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Native American
Connections: 1,151
School/Daycare: No
MCL Violations: 22
Monitoring Violations: 90
Treatment Tech Violations: 1

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	21	1999
Coliform (TCR)	MR	18	1997
Barium	MR	3	1996
Cadmium	MR	2	1996
Arsenic	MR	2	1996
Fluoride	MR	2	1996
Chromium	MR	2	1996
Gross Alpha, Excl. Radon and U	MR	2	1982
Nitrate	MR	2	1998
Selenium	MR	2	1996
Mercury	MR	2	1996
Groundwater Rule	TT	1	2018
Combined Uranium	MCL	1	2019
CYANIDE	MR	1	1996
Heptachlor epoxide	MR	1	1996
o-Dichlorobenzene	MR	1	1998
Di(2-ethylhexyl) adipate	MR	1	1996
Benzo(a)pyrene	MR	1	1996
HEXACHLOROBENZENE	MR	1	1996
OXAMYL	MR	1	1996
Di(2-ethylhexyl) phthalate	MR	1	1996
1,1-Dichloroethylene	MR	1	1998
CHLOROBENZENE	MR	1	1998
Xylenes, Total	MR	1	1998
Dinoseb	MR	1	1996
1,1,1-Trichloroethane	MR	1	1998
2,4,5-TP	MR	1	1996
1,2-DIBROMO-3-CHLOROPROPANE	MR	1	1996
Simazine	MR	1	1996
Picloram	MR	1	1996

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 180 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFMBA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
HFPO-DA	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFHpS	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NFDHA	9/19/2023	<0.02 µg/L	0.02 µg/L	Not Detected
PFPeA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/19/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFTrDA	9/19/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFPeS	9/19/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFBS	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	9/19/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
NEtFOSAA	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	9/19/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFTA	9/19/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFOS	9/19/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOA	9/19/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFDoA	9/19/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/19/2023	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	9/19/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	9/19/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFTA	7/26/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFTrDA	7/26/2023	<0.007 µg/L	0.007 µg/L	Not Detected
NEtFOSAA	7/26/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	7/26/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFTrDA	7/12/2023	<0.007 µg/L	0.007 µg/L	Not Detected
lithium	7/12/2023	39.6000 µg/L	9 µg/L	Detected
PFTA	7/12/2023	<0.008 µg/L	0.008 µg/L	Not Detected
NEtFOSAA	7/12/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	7/12/2023	<0.006 µg/L	0.006 µg/L	Not Detected
lithium	7/12/2023	49.0000 µg/L	9 µg/L	Detected
PFNA	7/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
9Cl-PF3ONS	7/12/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFUnA	7/12/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFHxA	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	7/12/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	7/12/2023	<0.003 µg/L	0.003 µg/L	Not Detected

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 PINE RIDGE WATER SYSTEM.

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 084690475 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

08 Drinking Water Authority

08'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 08 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
2023	Lead and Copper Rule	MR	1	SDWIS / 084690475 / 5000
2019	Combined Uranium	MCL	1	SDWIS / 084690475 / 4006
2018	Groundwater Rule	TT	1	SDWIS / 084690475 / 0700
1999	Coliform (TCR)	MCL	21	SDWIS / 084690475 / 3100
1998	Nitrate	MR	2	SDWIS / 084690475 / 1040
1998	o-Dichlorobenzene	MR	1	SDWIS / 084690475 / 2968
1998	1,1-Dichloroethylene	MR	1	SDWIS / 084690475 / 2977
1998	CHLOROBENZENE	MR	1	SDWIS / 084690475 / 2989
1998	Xylenes, Total	MR	1	SDWIS / 084690475 / 2955
1998	1,1,1-Trichloroethane	MR	1	SDWIS / 084690475 / 2981
1998	trans-1,2-Dichloroethylene	MR	1	SDWIS / 084690475 / 2979
1998	1,2-Dichloropropane	MR	1	SDWIS / 084690475 / 2983
1998	1,2,4-Trichlorobenzene	MR	1	SDWIS / 084690475 / 2378
1998	Toluene	MR	1	SDWIS / 084690475 / 2991
1998	Vinyl chloride	MR	1	SDWIS / 084690475 / 2976

How PINE RIDGE WATER SYSTEM Compares

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

Metric	PINE RIDGE WATER SYSTEM	08 avg	Federal benchmark
Total violations	114	81.7	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	23	9.7	Indicates a contaminant exceeded a federal MCL
PFAS detection	1 compound	76.9%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	7,482	906	Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 160 regulated public water systems in 08.

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 PINE RIDGE WATER SYSTEM water safe to drink? ▼

PINE RIDGE WATER SYSTEM (PWS ID: 084690475) has 114 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 7,482 people using Groundwater sources.

How many people does PINE RIDGE WATER SYSTEM serve? ▼

PINE RIDGE WATER SYSTEM serves 7,482 people in PINE RIDGE, 08. It is a Native American-owned system using Groundwater water sources with 1,151 service connections.

What type of violations does PINE RIDGE WATER SYSTEM have? ▼

PINE RIDGE WATER SYSTEM has 114 total violations: 23 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in PINE RIDGE WATER SYSTEM water? ▼

Yes. UCMR5 testing detected 1 PFAS compound in PINE RIDGE WATER SYSTEM's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does PINE RIDGE WATER SYSTEM use? ▼

PINE RIDGE WATER SYSTEM 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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