| Violation Type |
Number of Violations |
| Failure to monitor regularly |
11,060 |
| Monitoring and Reporting Disinfection Byproduct Rule |
1,034 |
| Failure to monitor, Routine Major (Coliform bacteria) |
678 |
| Over maximum contaminant level, Average |
420 |
| Follow-up and Routine Tap Sampling |
376 |
| Failure to report information to the public or state agency in the Consumer Confidence Report |
373 |
| Failure to monitor, Routine Minor (Coliform bacteria) |
131 |
| Treatment Technique (Surface Water Treatment Rule) |
124 |
| Maximum contaminant level, Monthly (Coliform bacteria) |
112 |
| Failure to monitor or report, Routine/Repeat (Indicators of microbial or virus contamination) |
110 |
| Failure to monitor: Check/Repeat/Confirmation sampling |
94 |
| Initial Tap Sampling for Lead and Copper |
62 |
| Filter Turbidity Reporting |
59 |
| Excess Turbidity at 0.3 NTU |
55 |
| Failure to monitor, Repeat Major (Coliform bacteria) |
44 |
| Treatment Technique Precursor Removal |
31 |
| Failure to monitor, Repeat Minor (Coliform bacteria) |
18 |
| Excess Turbidity at 1 NTU |
17 |
| Over maximum contaminant level, Single Sample |
16 |
| Initial Water Quality Parameter Monitoring and Reporting |
9 |
| Public Notification Violation for National Primary Drinking Water Regulations |
8 |
| Optimal Corrosion Control Treatment Study Recommendation |
8 |
| Initial, Follow-up, or Routine Source Water Treatment Monitoring and Reporting |
7 |
| Maximum contaminant level, Acute (Coliform bacteria) |
6 |
| Public Education |
5 |
| Failure to Filter (Surface Water Treatment Rule) |
5 |
| Other Non-National Primary Drinking Water Regulations Potential Health Risks |
1 |
| Inadequate reporting of information to the public |
1 |
