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Community Water System · PWS HI0000328

Kipapa Acres C.p.r.

Aiea, Hawaii 96701-5301 - drinking water served from groundwater sources to 43 people, tracked in EPA SDWIS and UCMR5.

43
People served
82
EPA violations
22
Health-based
Untested
UCMR5 result

The verdict

EPA records 82 drinking-water violations at Kipapa Acres C.p.r., 27% of them health-based - above the Hawaii per-system average.

82
Total EPA violations on record
27%
Health-based (MCL / treatment failure)
43
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kipapa Acres C.p.r.

Kipapa Acres C.p.r. is a private-owned community water system that delivers drinking water to 43 residents in Aiea, Hawaii (Honolulu County) through 15 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 82 total violations for this system , of which 22 (27%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 45 monitoring and reporting violations are on file. The most recent violation on record dates to 2000.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 22 violations (MCL, 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 Hawaii, EPA tracks 137 public water systems serving 1,520,931 people, with 5,234 cumulative violations and 2,289 health-based violations on record. About 80% of systems in the state carry at least one violation, and state-wide the average per system is 38.2 violations. Statewide, 2 of 45 UCMR5-tested systems have reported PFAS detections (4.4%).

Kipapa Acres C.p.r.'s 82 violations sit above the Hawaii 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
43
Total Violations
82
Health-Based Violations
22
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
15
County
Honolulu
School/Daycare
No
MCL Violations
22
Monitoring Violations
45
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 22 2000
Coliform (Pre-TCR) Other 5 1982
Toxaphene MR 3 1998
Diquat MR 3 1998
Endothall MR 3 1998
Di(2-ethylhexyl) phthalate MR 3 1998
Dinoseb MR 3 1998
2,3,7,8-TCDD MR 3 1998
2,4,5-TP MR 3 1998
Benzo(a)pyrene MR 3 1998
Dalapon MR 3 1998
CYANIDE MR 3 1998
Di(2-ethylhexyl) adipate MR 3 1998
2,4-D MR 3 1998
Pentachlorophenol MR 3 1998
Picloram MR 3 1998
Total Polychlorinated Biphenyls (PCB) MR 3 1998

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 Kipapa Acres C.p.r..

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 HI0000328 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Hawaii Drinking Water Authority

Hawaii'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 HI 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
2000 Coliform (TCR) MCL 22 SDWIS / HI0000328 / 3100
1998 Toxaphene MR 3 SDWIS / HI0000328 / 2020
1998 Diquat MR 3 SDWIS / HI0000328 / 2032
1998 Endothall MR 3 SDWIS / HI0000328 / 2033
1998 Di(2-ethylhexyl) phthalate MR 3 SDWIS / HI0000328 / 2039
1998 Dinoseb MR 3 SDWIS / HI0000328 / 2041
1998 2,3,7,8-TCDD MR 3 SDWIS / HI0000328 / 2063
1998 2,4,5-TP MR 3 SDWIS / HI0000328 / 2110
1998 Benzo(a)pyrene MR 3 SDWIS / HI0000328 / 2306
1998 Dalapon MR 3 SDWIS / HI0000328 / 2031
1998 CYANIDE MR 3 SDWIS / HI0000328 / 1024
1998 Di(2-ethylhexyl) adipate MR 3 SDWIS / HI0000328 / 2035
1998 2,4-D MR 3 SDWIS / HI0000328 / 2105
1998 Pentachlorophenol MR 3 SDWIS / HI0000328 / 2326
1998 Picloram MR 3 SDWIS / HI0000328 / 2040

How Kipapa Acres C.p.r. Compares

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

Metric Kipapa Acres C.p.r. Hawaii avg Federal benchmark
Total violations 82 38.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 22 16.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 4.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 43 11,102 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 137 regulated public water systems in Hawaii.

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 Kipapa Acres C.p.r. water safe to drink? ▼
Kipapa Acres C.p.r. (PWS ID: HI0000328) has 82 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 43 people using Groundwater sources.
How many people does Kipapa Acres C.p.r. serve? ▼
Kipapa Acres C.p.r. serves 43 people in Aiea, Hawaii. It is a Private-owned system using Groundwater water sources with 15 service connections.
What type of violations does Kipapa Acres C.p.r. have? ▼
Kipapa Acres C.p.r. has 82 total violations: 22 health-based violations (MCL exceedances or treatment failures), 45 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kipapa Acres C.p.r. water? ▼
No PFAS testing data is available for Kipapa Acres C.p.r. under the EPA's UCMR5 monitoring program.
What water source does Kipapa Acres C.p.r. use? ▼
Kipapa Acres C.p.r. 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.