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QUONSET BUSINESS PARK

PWS ID: RI1592025 · NORTH KINGSTOWN, Rhode Island 02852

QUONSET BUSINESS PARK serves 13,000 people in NORTH KINGSTOWN, Rhode Island using Groundwater water sources. It has 259 recorded EPA violations, including 59 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (8 compounds found).

Water Quality Snapshot: QUONSET BUSINESS PARK

QUONSET BUSINESS PARK is a state-owned non-transient non-community water system that delivers drinking water to 13,000 residents in NORTH KINGSTOWN, Rhode Island (Washington County) through 275 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 259 total violations for this system , of which 59 (23%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 130 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 55 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 8 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 35.8 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Rhode Island, EPA tracks 463 public water systems serving 1,159,492 people, with 33,766 cumulative violations and 8,949 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 72.9 violations. QUONSET BUSINESS PARK's 259 violations sit above the Rhode Island average. Statewide, 15 of 29 UCMR5-tested systems have reported PFAS detections (51.7%). 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

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

Population Served
13,000
Total Violations
259
Health-Based Violations
59
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
State
Connections
275
County
Washington
School/Daycare
No
MCL Violations
55
Monitoring Violations
130
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 55 2011
Interim Enhanced Surface Water Treatment Rule Other 42 2023
Coliform (TCR) Other 20 1991
Lead and Copper Rule MR 18 2023
Coliform (TCR) MR 13 2011
Revised Total Coliform Rule RPT 5 2025
Lead and Copper Rule TT 4 2022
TTHM MR 3 2023
Chlorine MR 3 2023
Nitrate MR 3 2023
Methoxychlor MR 3 2023
Dalapon MR 3 2023
Di(2-ethylhexyl) adipate MR 3 2023
Simazine MR 3 2023
Di(2-ethylhexyl) phthalate MR 3 2023
Picloram MR 3 2023
Dinoseb MR 3 2023
Aldicarb sulfoxide MR 3 2023
Aldicarb sulfone MR 3 2023
Atrazine MR 3 2023
Heptachlor MR 3 2023
Heptachlor epoxide MR 3 2023
Benzo(a)pyrene MR 3 2023
Pentachlorophenol MR 3 2023
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2023
Chlordane MR 3 2023
HEXACHLOROBENZENE MR 3 2023
Aldicarb MR 3 2023
Endrin MR 3 2023
2,4,5-TP MR 3 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 27 of 180 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 9/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
9Cl-PF3ONS 9/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
HFPO-DA 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFDoA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/17/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 9/17/2024 <0.007 µg/L 0.007 µg/L Not Detected
ADONA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTA 9/17/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFDA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/17/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 9/17/2024 <9 µg/L 9 µg/L Not Detected
PFBS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/17/2024 0.0055 µg/L 0.003 µg/L Detected
PFNA 9/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/17/2024 0.0040 µg/L 0.004 µg/L Detected
PFOA 9/17/2024 0.0078 µg/L 0.004 µg/L Detected
PFHpA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/17/2024 0.0086 µg/L 0.003 µg/L Detected
PFNA 9/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/17/2024 0.0095 µg/L 0.004 µg/L Detected
PFDA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/17/2024 0.0045 µg/L 0.003 µg/L Detected
PFUnA 9/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
lithium 9/17/2024 35.8000 µg/L 9 µg/L Detected
ADONA 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/17/2024 <0.004 µg/L 0.004 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 QUONSET BUSINESS PARK.

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 RI1592025 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Rhode Island Drinking Water Authority

Rhode Island'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 RI 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
2025 Revised Total Coliform Rule RPT 5 SDWIS / RI1592025 / 8000
2023 Interim Enhanced Surface Water Treatment Rule Other 42 SDWIS / RI1592025 / 0300
2023 Lead and Copper Rule MR 18 SDWIS / RI1592025 / 5000
2023 TTHM MR 3 SDWIS / RI1592025 / 2950
2023 Chlorine MR 3 SDWIS / RI1592025 / 0999
2023 Nitrate MR 3 SDWIS / RI1592025 / 1040
2023 Methoxychlor MR 3 SDWIS / RI1592025 / 2015
2023 Dalapon MR 3 SDWIS / RI1592025 / 2031
2023 Di(2-ethylhexyl) adipate MR 3 SDWIS / RI1592025 / 2035
2023 Simazine MR 3 SDWIS / RI1592025 / 2037
2023 Di(2-ethylhexyl) phthalate MR 3 SDWIS / RI1592025 / 2039
2023 Picloram MR 3 SDWIS / RI1592025 / 2040
2023 Dinoseb MR 3 SDWIS / RI1592025 / 2041
2023 Aldicarb sulfoxide MR 3 SDWIS / RI1592025 / 2043
2023 Aldicarb sulfone MR 3 SDWIS / RI1592025 / 2044

How QUONSET BUSINESS PARK Compares

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

Metric QUONSET BUSINESS PARK Rhode Island avg Federal benchmark
Total violations 259 72.9 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 59 19.3 Indicates a contaminant exceeded a federal MCL
PFAS detection 8 compounds 51.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 13,000 2,504 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 463 regulated public water systems in Rhode Island.

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 QUONSET BUSINESS PARK water safe to drink? ▼
QUONSET BUSINESS PARK (PWS ID: RI1592025) has 259 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 8 PFAS compounds found. This system serves 13,000 people using Groundwater sources.
How many people does QUONSET BUSINESS PARK serve? ▼
QUONSET BUSINESS PARK serves 13,000 people in NORTH KINGSTOWN, Rhode Island. It is a State-owned system using Groundwater water sources with 275 service connections.
What type of violations does QUONSET BUSINESS PARK have? ▼
QUONSET BUSINESS PARK has 259 total violations: 59 health-based violations (MCL exceedances or treatment failures), 130 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in QUONSET BUSINESS PARK water? ▼
Yes. UCMR5 testing detected 8 PFAS compounds in QUONSET BUSINESS PARK's water supply: PFHxS, PFOS, PFOA, PFHxA, lithium, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does QUONSET BUSINESS PARK use? ▼
QUONSET BUSINESS PARK uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.

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

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial