Community Water System · PWS WA5329172
Grasslands Water System
Operator location Ellensburg, Washington - 37% of 30 violations are health-based (upper-third health share (> 23%)); groundwater source; 260 served per SDWIS.
- 260
- People served (this PWS)
- 30
- EPA violations (this PWS)
- 11
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Grasslands Water System standing, mid SDWIS violation third
37% of 30 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 37% is upper-third health share (> 23%).
The verdict
Grasslands Water System lands in the middle third by violation volume (30), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (260; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 37% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 30
- Total EPA violations on record
- 37%
- Health-based (MCL / treatment failure)
- 260
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 76
- County
- Kittitas
- School/Daycare
- No
- MCL Violations
- 11
- Monitoring Violations
- 18
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 11 | 1994 |
| Coliform (TCR) | MR | 5 | 2000 |
| Arsenic | MR | 1 | 2008 |
| Cadmium | MR | 1 | 2008 |
| Chromium | MR | 1 | 2008 |
| Fluoride | MR | 1 | 2008 |
| Mercury | MR | 1 | 2008 |
| Selenium | MR | 1 | 2008 |
| Beryllium, Total | MR | 1 | 2008 |
| Revised Total Coliform Rule | MON | 1 | 2020 |
| Barium | MR | 1 | 2008 |
| CYANIDE | MR | 1 | 2008 |
| Antimony, Total | MR | 1 | 2008 |
| Thallium, Total | MR | 1 | 2008 |
| Nickel | MR | 1 | 2008 |
Violation Count vs. the National Corpus
Grasslands Water System has 30 recorded EPA violations, 42% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 57% carry more. 37% of this system's own violations are health-based (11 of 30), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
30 Lower than most fewer violations than 57% 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 Grasslands Water System
11 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for WA5329172.
Sources: EPA SDWIS · Washington State Department of Health, Office of Drinking Water
Nationwide peers
30 violations · 260 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Grasslands Water System
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Washington compares on the same EPA violation measures. Washington 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.