Port of Royal Slope
PWS ID: WA5300020 · Royal City, Washington 99357
Population Served
447
Total Violations
76
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 12
- County
- Grant
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 76
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Diquat | MR | 14 | 2007 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 8 | 2007 |
| ETHYLENE DIBROMIDE | MR | 8 | 2007 |
| Heptachlor epoxide | MR | 5 | 2007 |
| OXAMYL | MR | 4 | 2008 |
| Aldicarb sulfoxide | MR | 4 | 2008 |
| Aldicarb sulfone | MR | 4 | 2008 |
| Aldicarb | MR | 4 | 2008 |
| Carbofuran | MR | 4 | 2008 |
| Pentachlorophenol | MR | 2 | 2007 |
| Methoxychlor | MR | 1 | 2007 |
| Hexachlorocyclopentadiene | MR | 1 | 2007 |
| Toxaphene | MR | 1 | 2007 |
| Benzo(a)pyrene | MR | 1 | 2007 |
| BHC-GAMMA | MR | 1 | 2007 |
| HEXACHLOROBENZENE | MR | 1 | 2007 |
| Picloram | MR | 1 | 2007 |
| Simazine | MR | 1 | 2007 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2007 |
| Dinoseb | MR | 1 | 2007 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2007 |
| LASSO | MR | 1 | 2007 |
| Atrazine | MR | 1 | 2007 |
| Heptachlor | MR | 1 | 2007 |
| 2,4,5-TP | MR | 1 | 2007 |
| Dalapon | MR | 1 | 2007 |
| Endrin | MR | 1 | 2007 |
| Nitrate | MR | 1 | 2016 |
| Chlordane | MR | 1 | 2007 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.