Colonial Terrace Mhc Llc, OH
Lead detected, under the action levels
Latest 90th-percentile lead: 0.3 ppb (monitoring period 2025-2025). 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.
Who runs the water here
Colonial Terrace Mhc Llc serves about 110 people through 63 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Knox County, Ohio. EPA system ID: OH4201512; phone on file: 330-621-0778. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2024 (0.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Colonial Terrace Mhc Llc is 4.8 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.3 ppb |
| 2024 | 0.5 ppb |
| 2023 | 4.8 ppb |
| 2022 | 0.8 ppb |
| 2021 | 2.4 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
Where this result ranks
Of the 1,079 Ohio systems with a lead result, the median latest reading is 0.7 ppb; 1 are over 15 ppb right now and 27 have gone over at some point. Colonial Terrace Mhc Llc's 0.3 ppb sits at the 46th percentile in Ohio and the 41st nationally (higher means more lead).
Other water systems in Knox County
8 other systems share Knox County; 4 of them have a higher latest lead result than Colonial Terrace Mhc Llc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mount Vernon City Pws | 16,990 | 0 (not detected) |
| Knox County Water And Wastewater Pws | 8,250 | 2.09 ppb |
| Fredericktown Village | 2,648 | 1.8 ppb |
| Gambier Village Pws | 2,300 | 0 (not detected) |
| Danville Village Pws | 994 | 0 (not detected) |
| Martinsburg Village Pws | 240 | 0 (not detected) |
| Grandview Mhp A Pws | 74 | 1 ppb |
| Grandview Mhp B | 47 | 0.7 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Warren, OH 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 Colonial Terrace Mhc Llc 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. Size matters more than most people expect: small vs large water systems.