Community Water System · PWS WA5328967
Grandview Valley Estates
Operator location Rochester, Washington - smaller served population (≤ 999) at 138 people served; 57 SDWIS violations on record from groundwater sources.
- 138
- People served (this PWS)
- 57
- EPA violations (this PWS)
- 1
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Grandview Valley Estates standing, mid SDWIS violation third
138 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%).
The verdict
Grandview Valley Estates lands in the middle third by violation volume (57), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (138; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 57
- Total EPA violations on record
- 2%
- Health-based (MCL / treatment failure)
- 138
- 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
- 47
- County
- Thurston
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Barium | MR | 5 | 2002 |
| Cadmium | MR | 5 | 2002 |
| Chromium | MR | 5 | 2002 |
| Fluoride | MR | 5 | 2002 |
| Mercury | MR | 5 | 2002 |
| Selenium | MR | 5 | 2002 |
| CYANIDE | MR | 4 | 2002 |
| Antimony, Total | MR | 4 | 2002 |
| Thallium, Total | MR | 4 | 2002 |
| Nickel | MR | 4 | 2002 |
| Beryllium, Total | MR | 4 | 2002 |
| Consumer Confidence Rule | Other | 2 | 2016 |
| Coliform (TCR) | MR | 1 | 1993 |
| Coliform (TCR) | MCL | 1 | 1994 |
| Arsenic | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Nitrate | MR | 1 | 1979 |
Violation Count vs. the National Corpus
Grandview Valley Estates has 57 recorded EPA violations, 60% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 40% carry more. 2% of this system's own violations are health-based (1 of 57), 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)
57 Around the middle fewer violations than 40% 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
Population served record for Grandview Valley Estates
EPA SDWIS lists 138 people served and 47 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Washington State Department of Health, Office of Drinking Water
Nationwide peers
57 violations · 138 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 Grandview Valley Estates
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.