F0/100
Saint Robert Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,192 residents · Missouri
What's In Saint Robert's Tap Water?
48
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.010 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
5
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: July 31, 2025 – September 2, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: June 1, 2024 – June 30, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – November 1, 2023Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
ST ROBERT PWS
Population Served
5,192
Water Source
Groundwater
System ID
MO3010720
Frequently Asked Questions About Saint Robert Water
Is Saint Robert tap water safe to drink?
Saint Robert, Missouri tap water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 31 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Saint Robert's water?
Of the 48 contaminants tested in Saint Robert's water supply, the most notable include PFOS. 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Saint Robert have any water quality violations?
Yes, Saint Robert has 31 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MON. 19 of these are health-based violations, which are the most serious category.
Do I need a water filter in Saint Robert?
Based on EPA data, using a water filter in Saint Robert is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Saint Robert's tap water come from?
Saint Robert's drinking water is sourced from groundwater and supplied by ST ROBERT PWS. The system serves approximately 5,192 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Saint Robert's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Saint Robert's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Saint Robert's water compare to other cities in Missouri?
Saint Robert's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Missouri state page to see how all cities in the state compare.
What should I do if I'm concerned about Saint Robert's water quality?
If you have concerns about Saint Robert's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (ST ROBERT PWS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.