Community Water System · PWS MO4010959
Hayti Heights PWS
Operator location Hayti, Missouri - 0% of 149 violations are health-based (lower-third health share (≤ 1%)); groundwater source; 520 served per SDWIS.
- 520
- People served (this PWS)
- 149
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Hayti Heights PWS standing, high SDWIS violation third
0% of 149 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). Population rank #28,169 of 29,740 among systems serving 500+.
The verdict
Hayti Heights PWS sits in the upper third of the sitemap cohort by violation count (149), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (520; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is only 0% - almost all of this trail is monitoring or reporting. No UCMR5 PFAS test appears for this system in this extract.
- #28,169 of 29,740
- Population · /systems
- #701 of 738
- Population · MO
- 149
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 179
- County
- Pemiscot
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 111
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 38 | 2010 |
| Revised Total Coliform Rule | MON | 23 | 2024 |
| Lead and Copper Rule | MR | 16 | 2020 |
| Groundwater Rule | MR | 16 | 2018 |
| Public Notice | Other | 14 | 2025 |
| Consumer Confidence Rule | Other | 13 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2021 |
| TTHM | MR | 7 | 2021 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2008 |
| Groundwater Rule | Other | 2 | 2020 |
| Nitrate-Nitrite | MR | 1 | 2003 |
Violation Count vs. the National Corpus
Hayti Heights PWS has 149 recorded EPA violations, 81% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 19% carry more. 0% of this system's own violations are health-based (0 of 149), and it ranks #28,169 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
149 Higher than most more violations than 81% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Hayti Heights PWS
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MO4010959.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
149 violations · 520 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Hayti Heights PWS
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Missouri compares on the same EPA violation measures. Missouri systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.