TapScore

GILBERT, TOWN OF Water Quality Report

Population

247,600

people served

Water Source

🌊 Surface

rivers, lakes, reservoirs

National Rank

Top 90%

of 49,184 US systems

5-Year Record

⚠️ 344

violations recorded

C

Fair

Safety Grade

344 violations in the past 5 years, including 3 health-based

System Details

PWSID
AZ0407092
Population Served
247,600
Water Source
Surface Water
Owner
Local Government
State
Arizona
EPA Region
9

Contaminants of Concern

ContaminantStatusViolations
Contaminant 7000⚠ Monitoring/Reporting3
Contaminant 5000⚠ Monitoring/Reporting4
Gross Alpha⚠ Monitoring/Reporting8
Uranium⚠ Monitoring/Reporting8
Radium-226⚠ Monitoring/Reporting8
Contaminant 4020⚠ Monitoring/Reporting8
Contaminant 4030⚠ Monitoring/Reporting8
Contaminant 2378⚠ Monitoring/Reporting11
Vinyl Chloride⚠ Monitoring/Reporting11
Contaminant 2955⚠ Monitoring/Reporting11
Trichloroethylene (TCE)⚠ Monitoring/Reporting11
Contaminant 2968⚠ Monitoring/Reporting11
Tetrachloroethylene (PCE)⚠ Monitoring/Reporting11
Contaminant 2976⚠ Monitoring/Reporting11
Contaminant 2977⚠ Monitoring/Reporting11
Contaminant 2979⚠ Monitoring/Reporting11
Contaminant 2980⚠ Monitoring/Reporting11
Contaminant 2981⚠ Monitoring/Reporting11
Contaminant 2982⚠ Monitoring/Reporting11
Contaminant 2983⚠ Monitoring/Reporting11
Chloramine⚠ Monitoring/Reporting11
Contaminant 2985⚠ Monitoring/Reporting11
Contaminant 2987⚠ Monitoring/Reporting11
Contaminant 2989⚠ Monitoring/Reporting11
Contaminant 2990⚠ Monitoring/Reporting11
Contaminant 2991⚠ Monitoring/Reporting11
Contaminant 2992⚠ Monitoring/Reporting11
Contaminant 2996⚠ Monitoring/Reporting11
Total Trihalomethanes (TTHMs)✕ Health-Based10
Contaminant 0200⚠ Monitoring/Reporting6
Nitrate⚠ Monitoring/Reporting18
Contaminant 0800✕ Health-Based1
Contaminant 8000⚠ Monitoring/Reporting4
Haloacetic Acids (HAA5)⚠ Monitoring/Reporting8
Contaminant 1011⚠ Monitoring/Reporting3
Arsenic⚠ Monitoring/Reporting21
Contaminant 0300⚠ Monitoring/Reporting7
Contaminant 2920⚠ Monitoring/Reporting20
Barium⚠ Monitoring/Reporting2
Cadmium⚠ Monitoring/Reporting2
Chromium⚠ Monitoring/Reporting2
Cyanide⚠ Monitoring/Reporting2
Fluoride⚠ Monitoring/Reporting2
Selenium⚠ Monitoring/Reporting2
Contaminant 1036⚠ Monitoring/Reporting2
Contaminant 1052⚠ Monitoring/Reporting2
Beryllium⚠ Monitoring/Reporting2
Contaminant 1075⚠ Monitoring/Reporting2
Contaminant 1085⚠ Monitoring/Reporting2
Thallium⚠ Monitoring/Reporting2
Contaminant 2959⚠ Monitoring/Reporting4
Contaminant 2946⚠ Monitoring/Reporting4
Contaminant 2931⚠ Monitoring/Reporting4
Contaminant 2306⚠ Monitoring/Reporting4
Contaminant 2274⚠ Monitoring/Reporting4
Contaminant 2067⚠ Monitoring/Reporting1
Contaminant 2065⚠ Monitoring/Reporting1
Contaminant 2063⚠ Monitoring/Reporting4
Benzene⚠ Monitoring/Reporting1
Atrazine⚠ Monitoring/Reporting4
Contaminant 2046⚠ Monitoring/Reporting4
Contaminant 2039⚠ Monitoring/Reporting8
Contaminant 2037⚠ Monitoring/Reporting4
Contaminant 2036⚠ Monitoring/Reporting4
Contaminant 2035⚠ Monitoring/Reporting4
Contaminant 2034⚠ Monitoring/Reporting4
Contaminant 2033⚠ Monitoring/Reporting4
Contaminant 2032⚠ Monitoring/Reporting4
Contaminant 2020⚠ Monitoring/Reporting4
Contaminant 2015⚠ Monitoring/Reporting1
Contaminant 2010⚠ Monitoring/Reporting1
Contaminant 2005⚠ Monitoring/Reporting1
Contaminant 2031⚠ Monitoring/Reporting7
Contaminant 2042⚠ Monitoring/Reporting6
Contaminant 2041⚠ Monitoring/Reporting6
Contaminant 2400⚠ Monitoring/Reporting3
Contaminant 2398⚠ Monitoring/Reporting3
Contaminant 2396⚠ Monitoring/Reporting3
Contaminant 2394⚠ Monitoring/Reporting3
Contaminant 2392⚠ Monitoring/Reporting3
Contaminant 2390⚠ Monitoring/Reporting3
Contaminant 2388⚠ Monitoring/Reporting3
Contaminant 2326⚠ Monitoring/Reporting3
Contaminant 2110⚠ Monitoring/Reporting3
Contaminant 2105⚠ Monitoring/Reporting3
Contaminant 2040⚠ Monitoring/Reporting3

Violation History

2025
5
2024
33
2023
18
2022
96
2021
192
2020
12
2019
34
2018
4
2017
6
2013
1

Total violations on record: 526

Service Area

Cities Served

GILBERT

ZIP Codes Served

85234

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, Uranium, Radium-226, Fluoride, Cadmium, Chromium, Selenium, Barium

$150–$400

Activated Carbon Filter

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

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

$20–$100

Water Distiller

Removes heavy metals, minerals, and most contaminants through evaporation

Removes: Arsenic, Cadmium, Fluoride

$80–$200

How does this compare?

This systemNational average
Grade C
Avg: B-C
526violations total

1879% of national average

National avg: ~28 per system

🏙️ This is a large system — serving 37× more people than the national average.