Noble Oaks Subdivision Water Association, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 1.3 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Noble Oaks Subdivision Water Association at a glance
Noble Oaks Subdivision Water Association serves about 70 people through 28 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lake County, Indiana. EPA system ID: IN5245054; phone on file: 219-696-0455. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
The highest 90th-percentile result EPA holds for Noble Oaks Subdivision Water Association is 1.3 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.3 ppb |
Against other Indiana systems
Of the 687 Indiana systems with a lead result, the median latest reading is 1.31 ppb; 6 are over 15 ppb right now and 36 have gone over at some point. Noble Oaks Subdivision Water Association's 1.3 ppb sits at the 49th percentile in Indiana and the 60th nationally (higher means more lead).
Other water systems in Lake County
27 other systems share Lake County; 13 of them have a higher latest lead result than Noble Oaks Subdivision Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Indiana American Water - Northwest | 210,510 | 3 ppb |
| Hammond Water Works Department | 78,384 | 3 ppb |
| Crown Point Water Works | 30,000 | 0.7 ppb |
| Schererville Water Department | 30,000 | 1 ppb |
| East Chicago Water Works | 26,370 | 8 ppb |
| St. John Municipal Water Utility | 25,700 | 2.9 ppb |
| Highland Water Works | 23,984 | 2.4 ppb |
| Munster Water Company | 23,894 | 2 ppb |
| Griffith Water Department | 16,893 | 1.01 ppb |
| Dyer Water Department | 16,800 | 9.9 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Cedar Lake, IN may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Noble Oaks Subdivision Water Association 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.