Tebbston On Magothy, MD
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2017-2019). 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.
About Tebbston On Magothy
Tebbston On Magothy serves about 52 people through 15 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Anne Arundel County, Maryland. EPA system ID: MD0020059; phone on file: 443-340-4868. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 8 ppb from -5 ppb in the period ending 2016. The highest 90th-percentile result EPA holds for Tebbston On Magothy is 3 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2019 | 3 ppb |
| 2016 | -5 ppb |
Against other Maryland systems
Of the 437 Maryland systems with a lead result, the median latest reading is 0 ppb; 3 are over 15 ppb right now and 21 have gone over at some point. Tebbston On Magothy's 3 ppb sits at the 82nd percentile in Maryland and the 81st nationally (higher means more lead).
Other water systems in Anne Arundel County
26 other systems share Anne Arundel County; 6 of them have a higher latest lead result than Tebbston On Magothy. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Glen Burnie-Broadneck | 290,606 | 0 (not detected) |
| Crofton-Odenton | 62,986 | 0 (not detected) |
| Fort George G. Meade | 62,234 | 0 (not detected) |
| City Of Annapolis | 35,000 | 6.3 ppb |
| Broad Creek | 26,033 | 0 (not detected) |
| U.S. Naval Academy | 8,700 | 0 (not detected) |
| Maryland American Water--Severn System | 5,447 | 0 (not detected) |
| Md American Water Provinces | 3,886 | 0 (not detected) |
| Lake Village Townhomes | 2,400 | 5.3 ppb |
| Herald Harbor | 2,241 | 0 (not detected) |
Next steps for Westminster, MD
Test your own tap with a certified lab first-draw sample; Westminster, MD 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 Tebbston On Magothy 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.