TapScore

DIOMEDE JOINT UTILITIES Water Quality Report

Population

83

people served

Water Source

🌊 Surface

rivers, lakes, reservoirs

National Rank

—

of 49,184 US systems

5-Year Record

⚠️ 554

violations recorded

F

Unsafe

Safety Grade

554 violations in the past 5 years, including 109 health-based

System Details

PWSID
AK2340141
Population Served
83
Water Source
Surface Water
Owner
Native American
State
Alaska
EPA Region
10

Contaminants of Concern

ContaminantStatusViolations
Contaminant 0800⚠ Monitoring/Reporting1
Contaminant 7000⚠ Monitoring/Reporting11
Contaminant 5000⚠ Monitoring/Reporting14
Nitrate✕ Health-Based28
Arsenic✕ Health-Based140
Total Trihalomethanes (TTHMs)⚠ Monitoring/Reporting16
Haloacetic Acids (HAA5)⚠ Monitoring/Reporting16
Contaminant 2378⚠ Monitoring/Reporting16
Vinyl Chloride⚠ Monitoring/Reporting16
Contaminant 2955⚠ Monitoring/Reporting16
Trichloroethylene (TCE)⚠ Monitoring/Reporting16
Contaminant 2968⚠ Monitoring/Reporting16
Tetrachloroethylene (PCE)⚠ Monitoring/Reporting16
Contaminant 2976⚠ Monitoring/Reporting16
Contaminant 2977⚠ Monitoring/Reporting16
Contaminant 2979⚠ Monitoring/Reporting16
Contaminant 2980⚠ Monitoring/Reporting16
Contaminant 2981⚠ Monitoring/Reporting16
Contaminant 2982⚠ Monitoring/Reporting16
Contaminant 2983⚠ Monitoring/Reporting16
Chloramine⚠ Monitoring/Reporting16
Contaminant 2985⚠ Monitoring/Reporting16
Contaminant 2987⚠ Monitoring/Reporting16
Contaminant 2989⚠ Monitoring/Reporting16
Contaminant 2990⚠ Monitoring/Reporting16
Contaminant 2991⚠ Monitoring/Reporting16
Contaminant 2992⚠ Monitoring/Reporting16
Contaminant 2996⚠ Monitoring/Reporting16
Contaminant 3100⚠ Monitoring/Reporting6
Contaminant 0200✕ Health-Based197
Contaminant 0999⚠ Monitoring/Reporting65
Contaminant 8000⚠ Monitoring/Reporting77
Contaminant 0300⚠ Monitoring/Reporting111
Contaminant 7500⚠ Monitoring/Reporting3

Violation History

2025
47
2024
153
2023
196
2022
130
2021
28
2020
130
2019
66
2018
84
2017
22
2016
12

Total violations on record: 1021

Service Area

Cities Served

DIOMIDE

ZIP Codes Served

99762

Recommended Water Filters

Based on contaminants detected in this water system:

Reverse Osmosis System

Removes up to 99% of contaminants including PFAS, lead, arsenic, and nitrates

Removes: Arsenic, Nitrate

$150–$400

Activated Carbon Filter

Effective for chlorine, THMs, pesticides, and taste/odor improvement

Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Trichloroethylene (TCE), Tetrachloroethylene (PCE), Vinyl Chloride

$20–$100

Water Distiller

Removes heavy metals, minerals, and most contaminants through evaporation

Removes: Arsenic

$80–$200

How does this compare?

This systemNational average
Grade F
Avg: B-C
1021violations total

3646% of national average

National avg: ~28 per system

🏘️ Small community water system.