Gilbert Water Quality
Arizona
According to EPA SDWIS, Gilbert, Arizona is served by 9 community water systems covering about 249,265 people. The same extract lists 48 health-based violation records, most recently coded 2950 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Gilbert, Arizona is delivered through 9 EPA-regulated community water systems serving an estimated 249,265 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 48 violation records across the 9 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 7 distinct EPA contaminant codes: TTHM, Arsenic, LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule, Groundwater Rule and 2 others. 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| GILBERT, TOWN OF | 247,600 | 3 | Health |
| ROOSEVELT RANCH RV & MHP | 430 | 0 | Clean |
| WEKIVA FALLS RESORT | 352 | 14 | Health |
| COUNTRYSIDE ESTATES MHP HAYS KS, LLC | 300 | 0 | Clean |
| COTTONWOOD TERRACE | 213 | 10 | Health |
| MEADOW ACRES MHP HAYS KS, LLC | 134 | 1 | Health |
| APACHE LAKE MARINA RESORT | 123 | 6 | Health |
| SUNSET VALLEY MHP HAYS KS, LLC | 60 | 2 | Health |
| GREENFIELD RANCHETTES | 53 | 12 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| APACHE LAKE MARINA RESORT | TTHM | 2025-10-01 |
| APACHE LAKE MARINA RESORT | TTHM | 2025-07-01 |
| APACHE LAKE MARINA RESORT | TTHM | 2025-07-01 |
| APACHE LAKE MARINA RESORT | TTHM | 2025-04-01 |
| APACHE LAKE MARINA RESORT | TTHM | 2025-04-01 |
| GREENFIELD RANCHETTES | Arsenic | 2025-04-01 |
| GREENFIELD RANCHETTES | Arsenic | 2025-04-01 |
| GREENFIELD RANCHETTES | Arsenic | 2025-01-01 |
| GREENFIELD RANCHETTES | Arsenic | 2025-01-01 |
| APACHE LAKE MARINA RESORT | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| GREENFIELD RANCHETTES | Arsenic | 2024-10-01 |
| GREENFIELD RANCHETTES | Arsenic | 2024-10-01 |
| GREENFIELD RANCHETTES | Arsenic | 2024-10-01 |
| GREENFIELD RANCHETTES | Arsenic | 2024-07-01 |
| GREENFIELD RANCHETTES | Arsenic | 2024-07-01 |
| SUNSET VALLEY MHP HAYS KS, LLC | Revised Total Coliform Rule | 2023-09-09 |
| SUNSET VALLEY MHP HAYS KS, LLC | Revised Total Coliform Rule | 2023-09-09 |
| WEKIVA FALLS RESORT | TTHM | 2023-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-01-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-01-01 |
| WEKIVA FALLS RESORT | TTHM | 2023-01-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-10-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-10-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-07-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-07-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-04-01 |
| WEKIVA FALLS RESORT | TTHM | 2022-01-01 |
| GREENFIELD RANCHETTES | Arsenic | 2020-01-01 |
| GREENFIELD RANCHETTES | Groundwater Rule | 2019-04-30 |
| GILBERT, TOWN OF | Long Term 2 Enhanced Surface Water Treatment Rule | 2017-10-01 |
| GILBERT, TOWN OF | TTHM | 2017-07-01 |
| GILBERT, TOWN OF | TTHM | 2017-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| COTTONWOOD TERRACE | Groundwater Rule | 2016-04-01 |
| GREENFIELD RANCHETTES | Arsenic | 2009-01-01 |
| MEADOW ACRES MHP HAYS KS, LLC | Lead and Copper Rule | 1994-01-01 |
What are Gilbert's health-based records for?
Gilbert's health-based violation records carry 7 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Tthm | 21 | 3 |
| Groundwater Rule | 11 | 2 |
| Arsenic | 11 | 1 |
| Revised Total Coliform Rule | 2 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
| Lead and Copper Rule | 1 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
TRI Facilities in Gilbert
| Facility | Total Releases |
|---|---|
| Silent-Aire | 2.7K lbs |
| Superlite Block Inc. | 0 lbs |
| Bio Huma Netics-Gilbert Facility | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Gilbert, Arizona? ▼
How many water violations does Gilbert have in this EPA extract? ▼
What contaminants were found in Gilbert water? ▼
How many water systems serve Gilbert? ▼
Where does Gilbert get its drinking water? ▼
Are there pollution sources near Gilbert? ▼
How does Gilbert compare in Arizona?
Of the 191 Arizona places with at least one community water system on file, Gilbert ranks #19 by number of systems (9).
Either side of it: Bullhead City (10), Cottonwood (9), Surprise (9), Lakeside (8)
About This Data
Figures here are the current EPA SDWIS extract joined to the 9 community water systems whose service area lists Gilbert, ranked against the 191 Arizona places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.