Hilton Sound (Sc3250024)
PWSID: SC3250024
This system has no unresolved violations. The most recent violation on record was 2023-07-01.
This system has more violations on record than 68% of water systems in Missouri.
Violation trend: 1.8 per year over the last 5 years.
System Details
| Population Served | 50 |
| Service Connections | 18 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Des Peres |
| EPA ZIP on File | 63131 |
Areas Served
- Ballentine, Lexington County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Copper (90th percentile) | 6.9000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 6.8750 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 6.4150 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 6.1700 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 6.0000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.7750 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.7000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.6700 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.6000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.0100 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 4.3900 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 4.0400 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 3.5600 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.8800 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.0600 mg/L | 1.300 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.1870 mg/L | 0.015 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0460 mg/L | 0.015 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0420 mg/L | 0.015 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0340 mg/L | 0.015 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0320 mg/L | 0.015 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0150 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0130 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0130 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0130 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0120 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0110 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0110 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0080 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0080 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0060 mg/L | 0.015 mg/L | Below Action Level |
Violation History (12 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 5000 | MR | 2023-07-01 | Returned to Compliance | |
| 5000 | MR | 2023-07-01 | Returned to Compliance | |
| 8000 | MON | 2023-07-01 | Major | Returned to Compliance |
| 8000 | MON | 2023-07-01 | Major | Returned to Compliance |
| 8000 | MON | 2023-07-01 | Major | Acknowledged |
| 8000 | MON | 2023-07-01 | Major | Returned to Compliance |
| 5000 | TT | 2022-01-01 | Yes | Acknowledged |
| 5000 | TT | 2022-01-01 | Yes | Returned to Compliance |
| 5000 | TT | 2022-01-01 | Yes | Acknowledged |
| 3100 | MR | 2015-09-01 | Returned to Compliance | |
| 3014 | MR | 2014-10-01 | Major | Returned to Compliance |
| 3014 | MR | 2011-09-01 | Returned to Compliance |
Understanding This Water System's Record
Hilton Sound (Sc3250024) is a community water system water system that draws from groundwater sources and serves a population of 50 in Des Peres, Missouri. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.