Water Quality in Grandview, WA (98930)
EPA violation data for public water systems serving ZIP code 98930.
30
Total Violations
3
Health-Based
27
Monitoring / Reporting
30
Resolved
What does this mean?
30 of 30 violations have been resolved. 3 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 27 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (30 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Nitrate | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Carbon tetrachloride | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Liver problems; increased risk of cancer |
| o-Dichlorobenzene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| p-Dichlorobenzene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| 1,2,4-Trichlorobenzene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| Vinyl chloride | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Increased risk of cancer |
| Tetrachloroethylene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Liver problems; increased risk of cancer |
| Benzene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Anemia; decrease in blood platelets; increased risk of cancer |
| cis-1,2-Dichloroethylene | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(1)
Nitrate
03
2024(22)
Nitrate
03
Carbon tetrachloride
03
o-Dichlorobenzene
03
p-Dichlorobenzene
03
1,2,4-Trichlorobenzene
03
Vinyl chloride
03
Tetrachloroethylene
03
Benzene
03
cis-1,2-Dichloroethylene
03
DICHLOROMETHANE
03
1,1-Dichloroethylene
03
trans-1,2-Dichloroethylene
03
1,2-Dichloroethane
03
1,1,1-Trichloroethane
03
1,1,2-Trichloroethane
03
CHLOROBENZENE
03
Toluene
03
1,2-Dichloropropane
03
Trichloroethylene
03
Styrene
03
Ethylbenzene
03
Nitrate
01
How Does This Compare?
Grandview (98930) has 30 recorded violations, including 3 health-based. All violations have been resolved, which is a positive sign for current water quality. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.
Targets:Nitrate, Nitrite, Dissolved Solids
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.