WILLIAMS CITY OF Water Quality Report
Population
3,145
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
—
of 49,184 US systems
5-Year Record
⚠️ 68
violations recorded
F
Unsafe
Safety Grade
68 violations in the past 5 years, including 20 health-based
System Details
- PWSID
- AZ0403026
- Population Served
- 3,145
- Water Source
- Ground Water
- Owner
- Local Government
- State
- Arizona
- EPA Region
- 9
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 7000 | ⚠ Monitoring/Reporting | 20 |
| Contaminant 3100 | ⚠ Monitoring/Reporting | 4 |
| Contaminant 0999 | ⚠ Monitoring/Reporting | 11 |
| Contaminant 0300 | ✕ Health-Based | 26 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 2 |
| Contaminant 0200 | ⚠ Monitoring/Reporting | 17 |
| Total Coliform | ⚠ Monitoring/Reporting | 14 |
| Contaminant 7500 | ⚠ Monitoring/Reporting | 7 |
| Contaminant 5000 | ⚠ Monitoring/Reporting | 4 |
| Contaminant 2920 | ✕ Health-Based | 18 |
Violation History
2025
3
2023
22
2022
31
2021
12
2020
4
2019
4
2018
18
2017
2
2016
8
2015
6
Total violations on record: 123
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs)
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade F
Avg: B-C
123violations total
439% of national average
National avg: ~28 per system
🏘️ Small community water system.