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PWS ID	HI0000231
PWS Name	MAUNALOA-KALUAKOI
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	1000
County Served	Maui

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	2314294	Open	01-OCT-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2314293	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2314292	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	2314290	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	107	Known	01-JAN-2007	31-JAN-2007	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	2314291	Returned to Compliance	01-JAN-2007	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	106	Returned to Compliance	01-OCT-2005	31-DEC-2005	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	11005	Returned to Compliance	01-JUL-2005	30-SEP-2005	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	20104	Known	01-JAN-2000	08-DEC-2003	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	15298	Known	01-MAY-1998	31-MAY-1998	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	200493	Returned to Compliance	01-SEP-1993	30-SEP-1993	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	200393	Returned to Compliance	01-AUG-1993	31-AUG-1993	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	200693	Known	01-JUL-1993	31-JUL-1993	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	200293	Returned to Compliance	01-JUL-1993	31-JUL-1993	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	200193	Returned to Compliance	30-JUN-1993	29-JUL-1993	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	200593	Known	01-JUN-1993	30-JUN-1993	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	14990	Known	01-MAR-1990	31-MAR-1990	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	14689	Known	01-JUL-1989	31-JUL-1989	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	2314189	Known	01-JAN-1989	31-JAN-1989	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	2313888	Known	01-JUL-1988	31-JUL-1988	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	2313487	Known	01-FEB-1987	28-FEB-1987	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	2310484	Known	31-MAR-1984	30-JUN-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	2310084	Known	31-JAN-1984	29-FEB-1984	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7317482	Known	31-AUG-1982	30-SEP-1982	No
Other	Notification, Public	Miscellaneous Other Rules	-	7316782	Known	31-MAR-1982	30-JUN-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7316582	Known	31-MAR-1982	30-APR-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7316182	Known	31-JAN-1982	28-FEB-1982	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7314981	Known	30-SEP-1981	29-DEC-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7314581	Known	31-JUL-1981	30-AUG-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7314381	Known	30-JUN-1981	29-SEP-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7313181	Known	31-MAR-1981	30-JUN-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7314181	Known	28-FEB-1981	27-MAR-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7313981	Known	31-JAN-1981	28-FEB-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7313781	Known	31-DEC-1980	30-JAN-1981	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7313581	Known	30-NOV-1980	29-DEC-1980	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7313381	Known	31-OCT-1980	30-NOV-1980	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7311780	Known	30-SEP-1980	29-OCT-1980	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7312380	Known	31-AUG-1980	30-SEP-1980	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7311480	Known	30-JUN-1980	29-JUL-1980	No
Other	Notification, Public	Total Coliform Rule	Coliform (Pre-TCR)	7311980	Known	30-APR-1980	29-MAY-1980	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
11722	2314294	SIF	State Public Notification received	25-JUN-2025	State	-
11720	2314293	SOX	State Compliance achieved	04-MAY-2016	State	THM MCL, 2016 JAN TO MAR, RTC
11717	2314292	SOX	State Compliance achieved	23-NOV-2015	State	TTHM MCL, 2015 JUL TO SEPT, RETURN TO COMPLIANCE
11714	2314291	SOX	State Compliance achieved	30-NOV-2010	State	PB/CU M/R 2007-2009, SOX
11708	2314290	SOX	State Compliance achieved	27-MAY-2009	State	P2/P5 (CYANIDE) M/R 1/08-12/08, SOX
307	107	SIF	State Public Notification received	28-FEB-2007	State	SWTR TT 1/07, PN RECEIVED
11712	11005	SOX	State Compliance achieved	11-SEP-2006	State	ENHANCED COAGULATION MONITORING REQUIREMENTS, TIER 3, JULY TO SEPT 2005
11710	106	SOX	State Compliance achieved	24-JAN-2006	State	-
1098	15298	SFG	State Public Notification issued	27-AUG-1998	State	PN ISSUED, TCR M/R 4/98
693	200693	SIE	State Public Notification requested	01-OCT-1993	State	PN REQUESTED, SWTR 7-9, 1993
693	200493	SIE	State Public Notification requested	01-OCT-1993	State	PN REQUESTED, SWTR 7-9, 1993
693	200393	SIE	State Public Notification requested	01-OCT-1993	State	PN REQUESTED, SWTR 7-9, 1993
893	200193	SOX	State Compliance achieved	15-SEP-1993	State	RETURN TO COMPLIANCE SWTR GW SOURCE
893	200293	SOX	State Compliance achieved	15-SEP-1993	State	RETURN TO COMPLIANCE SWTR GW SOURCE
493	200593	SIE	State Public Notification requested	26-AUG-1993	State	PN REQUESTED, SWTR 6-7,1993
690	14990	SIF	State Public Notification received	18-OCT-1990	State	PN FOR BACTI MCL 9/90

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
KUALAPUU WELL CONNECTION (SYS. 234)	1110	Yes	Consecutive Connection	Ground water	Other	Inactive
KUALAPUU WELL 17	1839	Yes	Well	Ground water	Permanent	Inactive
MOUNTAIN RES RAW WATER TO PUU NANA WTP	1834	Yes	Intake	Surface water	Permanent	Inactive
MAHANA MIS RES RAW WATER TO PUU NANA WTP	1833	Yes	Intake	Surface water	Permanent	Inactive
KAWELA INTAKE	1117	Yes	Intake	Surface water	Permanent	Inactive
WEST KAWELA INTAKE	1115	Yes	Intake	Surface water	Permanent	Inactive
KALIHI INTAKE	1114	Yes	Intake	Surface water	Permanent	Inactive
HONOLIOLIO INTAKE	1113	Yes	Intake	Surface water	Permanent	Inactive
LUALOHI INTAKE	1112	Yes	Intake	Surface water	Permanent	Inactive
229 KUALAPUU CONSEC CONNECTION	1845	Yes	Consecutive Connection	Ground water	Permanent	Active
MAUNALOA-KALUAKOI DISTRIBUTION SYSTEM	1116	No	Distribution System/Zone	-	-	Active
PUU NANA WATER TREATMENT PLANT	1111	No	Treatment Plant	-	-	Inactive

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PUU NANA WATER TREATMENT PLANT	1111	Coagulation	Particulate removal
PUU NANA WATER TREATMENT PLANT	1111	Flocculation	Particulate removal
PUU NANA WATER TREATMENT PLANT	1111	pH Adjustment	Corrosion control
PUU NANA WATER TREATMENT PLANT	1111	Chlorination (FRDS-1.5)	Disinfection

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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