High Ridge, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About High Ridge
High Ridge serves about 73 people through 30 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Cowlitz County, Washington. EPA system ID: WA53AB327. Ask the utility on your bill for your address in their service line inventory.
High Ridge's lead record
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for High Ridge is 2.5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 1 ppb |
| 2019 | 1.5 ppb |
| 2019 | 2.5 ppb |
Against other Washington systems
Of the 2,218 Washington systems with a lead result, the median latest reading is 1 ppb; 18 are over 15 ppb right now and 62 have gone over at some point. High Ridge's reported as 0 (not detected) sits at the 10th percentile in Washington and the 6th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
30 other systems share Cowlitz County; 20 of them have a higher latest lead result than High Ridge. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Longview Water Department | 57,617 | 0 (not detected) |
| Kelso City Of | 15,775 | 1 ppb |
| Beacon Hill Water & Sewer District | 11,969 | 0 (not detected) |
| Woodland City Of | 10,640 | 2.1 ppb |
| Kalama City Of | 8,020 | 1 ppb |
| Castle Rock Municipal Water | 4,367 | 5 ppb |
| Toutle Community Regional Water | 3,215 | 2 ppb |
| Carrolls Water Assn | 449 | 1.3 ppb |
| Ryderwood Improvement & Service As | 434 | 0.5 ppb |
| Lewis River Rv Park | 347 | 2.7 ppb |
Your move
Look up your address in High Ridge's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask High Ridge whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.