OSAGE CO RWD 3
PWS ID: KS2013910 · VASSAR, Kansas 66543
OSAGE CO RWD 3 serves 900 people in VASSAR, Kansas using Surface Water water sources. It has 344 recorded EPA violations, including 203 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: OSAGE CO RWD 3
OSAGE CO RWD 3 is a local-owned community water system that delivers drinking water to 900 residents in VASSAR, Kansas (Osage County) through 441 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 344 total violations for this system , of which 203 (59%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 122 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 91 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Kansas, EPA tracks 957 public water systems serving 2,894,673 people, with 84,344 cumulative violations and 33,424 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 88.1 violations. OSAGE CO RWD 3's 344 violations sit above the Kansas average. Statewide, 89 of 103 UCMR5-tested systems have reported PFAS detections (86.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 441
- County
- Osage
- School/Daycare
- No
- MCL Violations
- 111
- Monitoring Violations
- 122
- Treatment Tech Violations
- 92
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 91 | 2024 |
| CARBON, TOTAL | TT | 68 | 2008 |
| Total Haloacetic Acids (HAA5) | MCL | 62 | 2011 |
| TTHM | MCL | 44 | 2006 |
| Surface Water Treatment Rule | TT | 20 | 1995 |
| Lead and Copper Rule | MR | 13 | 1994 |
| Lead and Copper Rule | Other | 7 | 1994 |
| Coliform (TCR) | MR | 6 | 1994 |
| Coliform (TCR) | MCL | 5 | 2014 |
| Interim Enhanced Surface Water Treatment Rule | TT | 4 | 2015 |
| Surface Water Treatment Rule | Other | 4 | 1993 |
| TTHM | MR | 3 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2009 |
| CARBON, TOTAL | MR | 3 | 2022 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2010 |
| Consumer Confidence Rule | Other | 2 | 2000 |
| Public Notice | Other | 2 | 2008 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2025 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for OSAGE CO RWD 3.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID KS2013910 on SDWISSource: EPA SDWIS Federal Reports Search
Kansas Drinking Water Authority
Kansas's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find KS regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | LEAD AND COPPER RULE REVISIONS | RPT | 1 | SDWIS / KS2013910 / 5200 |
| 2024 | Surface Water Treatment Rule | MR | 91 | SDWIS / KS2013910 / 0200 |
| 2022 | CARBON, TOTAL | MR | 3 | SDWIS / KS2013910 / 2920 |
| 2015 | Interim Enhanced Surface Water Treatment Rule | TT | 4 | SDWIS / KS2013910 / 0300 |
| 2014 | Coliform (TCR) | MCL | 5 | SDWIS / KS2013910 / 3100 |
| 2011 | Total Haloacetic Acids (HAA5) | MCL | 62 | SDWIS / KS2013910 / 2456 |
| 2010 | Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | SDWIS / KS2013910 / 0600 |
| 2009 | TTHM | MR | 3 | SDWIS / KS2013910 / 2950 |
| 2009 | Total Haloacetic Acids (HAA5) | MR | 3 | SDWIS / KS2013910 / 2456 |
| 2008 | CARBON, TOTAL | TT | 68 | SDWIS / KS2013910 / 2920 |
| 2008 | Public Notice | Other | 2 | SDWIS / KS2013910 / 7500 |
| 2006 | TTHM | MCL | 44 | SDWIS / KS2013910 / 2950 |
| 2000 | Consumer Confidence Rule | Other | 2 | SDWIS / KS2013910 / 7000 |
| 1995 | Surface Water Treatment Rule | TT | 20 | SDWIS / KS2013910 / 0200 |
| 1994 | Lead and Copper Rule | MR | 13 | SDWIS / KS2013910 / 5000 |
How OSAGE CO RWD 3 Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | OSAGE CO RWD 3 | Kansas avg | Federal benchmark |
|---|---|---|---|
| Total violations | 344 | 88.1 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 203 | 34.9 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 86.4% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 900 | 3,025 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 957 regulated public water systems in Kansas.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Read our methodology — how this data is sourced, computed, and verified.