Tap Truth EPA drinking water records, in plain English

County drinking water records

Maui County, HI drinking water systems

30 community water systems serve Maui County, HI, reporting 165,719 people served in all. A system that also serves other counties counts all of its customers here.

1 of them (3%) had at least one health-based violation in the last 10 years. 4 systems still have one unresolved.

25 rely mainly on groundwater and 5 on surface water, counting water bought from other systems.

Their lead service line inventories list 0 lead lines, 315 galvanized lines that must be replaced and 29,374 lines of unknown material.

5 more systems are placed in Maui County, HI by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
30
People served, sum of each system's own figure
165,719
Systems with a health-based violation, last 10 years
1
Systems with one unresolved
4
Lead service lines in inventories
0

Water systems serving Maui County

30 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Wailuku Kahului, Wailuku and 5 more 74,511 Surface water 0 0 0
Makawao Haiku-Pauwela, Pukalani and 1 more 29,868 Surface water 1 0 0
Lahaina Lahaina and Napili-Honokowai 20,065 Surface water 0 0 0
Kaanapali Kaanapali 8,000 Groundwater 0 0 0
Upper Kula Kula, Keokea and 1 more 7,686 Surface water 0 0 0
Kapalua Kapalua 4,200 Groundwater 0 0 0
Kaunakakai Kaunakakai 3,702 Groundwater 0 0 0
Lower Kula Kula, Keokea and 3 more 3,522 Surface water 0 0 0
Lanai City Lanai City 3,200 Groundwater 0 1 0
Hoolehua Kaunakakai 2,400 Groundwater 0 0 0
Hana Hana and land outside it 1,284 Groundwater 0 0 0
Haleakala National Park Olinda and Kula 1,200 Groundwater 0 0 0
Ualapue Ualapue and land outside it 1,119 Groundwater 0 0 0
Maunaloa-Kaluakoi Maunaloa 1,000 Purchased groundwater 0 1 0
Hana Water Systems - South Hana 816 Groundwater 0 0 0
Mahanalua Nui Subdivison Launiupoko 606 Groundwater 0 0 0
Kawela Plantation Kaunakakai 553 Groundwater 0 0 0
Kualapuu Kualapuu 500 Groundwater 0 1 0
Kalae Kualapuu and Makena 360 Purchased groundwater 0 0 0
Keanae Outside cities and towns 270 Groundwater 0 0 0
Hana Water Systems - North Hana 160 Groundwater 0 0 0
Kahakuloa Water Co. Outside cities and towns 150 Groundwater 0 0 0
Nahiku Outside cities and towns 107 Groundwater 0 0 0
Olowalu Launiupoko, Lahaina and 1 more 100 Groundwater 0 0 0
Maunaolu Plantation Haliimaile and land outside it 100 Groundwater 0 0 0
Kipu Maunaloa and land outside it 80 Purchased groundwater 0 2 0
West Kuiaha Meadows Haiku-Pauwela 60 Groundwater 0 0 0
Honokohau Lahaina and land outside it 42 Purchased groundwater 0 0 0
Baldwin Ranch Estates Pukalani and Makawao 32 Groundwater 0 0 0
Maui Highlands Kihei 26 Groundwater 0 0 0

Systems placed by county record in Maui County

5 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Hoku'ula Water System County on record 1,000 Groundwater 0 0 No inventory
Kalaupapa NHP County on record 110 Groundwater 0 1 0
Kailua County on record 90 Groundwater 0 0 0
Kula Nani County on record 80 Purchased surface water 0 0 0
Haiku Town Water Association, Inc. County on record 20 Groundwater 0 0 0

Cities and towns in Maui County

27 places

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Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations