Water Quality in Pasco, WA (99302)
EPA violation data for public water systems serving ZIP code 99302.
53
Total Violations
3
Health-Based
50
Monitoring / Reporting
53
Resolved
What does this mean?
53 of 53 violations have been resolved. 3 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 50 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 (53 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Ethylbenzene | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| 1,2,4-Trichlorobenzene | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| cis-1,2-Dichloroethylene | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| p-Dichlorobenzene | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Di(2-ethylhexyl) adipate | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(41)
Ethylbenzene
03
Dalapon
03
1,2,4-Trichlorobenzene
03
Heptachlor epoxide
03
Chlordane
03
Dinoseb
03
cis-1,2-Dichloroethylene
03
LASSO
03
p-Dichlorobenzene
03
Di(2-ethylhexyl) adipate
03
1,2-Dichloropropane
03
Tetrachloroethylene
03
Benzene
03
Atrazine
03
DICHLOROMETHANE
03
o-Dichlorobenzene
03
1,1-Dichloroethylene
03
1,2-Dichloroethane
03
1,1,1-Trichloroethane
03
1,1,2-Trichloroethane
03
CHLOROBENZENE
03
Styrene
03
Endrin
03
BHC-GAMMA
03
Methoxychlor
03
Toxaphene
03
Simazine
03
Di(2-ethylhexyl) phthalate
03
Heptachlor
03
HEXACHLOROBENZENE
03
Benzo(a)pyrene
03
Vinyl chloride
03
Picloram
03
2,4,5-TP
03
Pentachlorophenol
03
Trichloroethylene
03
Toluene
03
Hexachlorocyclopentadiene
03
trans-1,2-Dichloroethylene
03
Carbon tetrachloride
03
Consumer Confidence Rule
71
2023(2)
Nitrate
01
Revised Total Coliform Rule
3A
How Does This Compare?
Pasco (99302) has 53 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
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.