What Lead is, and why it's regulated
What the EPA limit means
⚖️
0.0150 mg/L
Maximum Contaminant Level — the enforceable ceiling a supplier must stay under.
🎯
0.0 mg/L
Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.
🧪
LCR
Where these measurements come from. Hover the tag for the EPA programme and years.
Where Lead was found
The water suppliers reporting the highest levels, worst first. For lead and copper that is the 90th-percentile result the action level is written against; for Six-Year Review data, the 95th percentile of each system's samples.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Smethport Borough | Smethport | PA | 1 mg/L 6667% above the EPA limit of 0.0150 mg/L |
| The Valley Mhc | Warren | PA | 1 mg/L 6667% above the EPA limit of 0.0150 mg/L |
| Aqua Pa Mt Jewett | — | PA | 1 mg/L 6667% above the EPA limit of 0.0150 mg/L |
| Muncy Borough Water Company | Muncy | PA | 0.8900 mg/L 5933% above the EPA limit of 0.0150 mg/L |
| Medilodge of Sterling | Sterlng | MI | 0.8880 mg/L 5920% above the EPA limit of 0.0150 mg/L |
| North Coventry Water System | — | PA | 0.8000 mg/L 5333% above the EPA limit of 0.0150 mg/L |
| Warwick Water Works | King of Prussia | PA | 0.6960 mg/L 4640% above the EPA limit of 0.0150 mg/L |
| Eei Meadows Complex | Dallas | PA | 0.6723 mg/L 4482% above the EPA limit of 0.0150 mg/L |
| Sullivan Trail Village | — | PA | 0.6695 mg/L 4463% above the EPA limit of 0.0150 mg/L |
| Elderberry Mhp | Conneaut Lake | PA | 0.6400 mg/L 4267% above the EPA limit of 0.0150 mg/L |
| Sapphire Vill.Condos (West) | — | VI | 0.5885 mg/L 3923% above the EPA limit of 0.0150 mg/L |
| Owls Nest Golf Club and Condos | Thornton | NH | 0.5660 mg/L 3773% above the EPA limit of 0.0150 mg/L |
| Riverview Manor Condos | Raymond | NH | 0.5100 mg/L 3400% above the EPA limit of 0.0150 mg/L |
| Clymer Boro Muni Auth | Clymer | PA | 0.5090 mg/L 3393% above the EPA limit of 0.0150 mg/L |
| Glen Meadows Condominiums | Gaylord | MI | 0.5000 mg/L 3333% above the EPA limit of 0.0150 mg/L |
| Estates at Stone Row | East Stroudsburg | PA | 0.4865 mg/L 3243% above the EPA limit of 0.0150 mg/L |
| Dayton Public Water System | Dayton | OH | 0.4700 mg/L 3133% above the EPA limit of 0.0150 mg/L |
| Orford Village Dist | Orford | NH | 0.3830 mg/L 2553% above the EPA limit of 0.0150 mg/L |
| Blue Heron Homeowners Assoc | — | PA | 0.3820 mg/L 2547% above the EPA limit of 0.0150 mg/L |
| Fisherfield Townhouses | Bradford | MA | 0.3810 mg/L 2540% above the EPA limit of 0.0150 mg/L |
| Pleasant View Water Fac Board | — | AR | 0.3700 mg/L 2467% above the EPA limit of 0.0150 mg/L |
| Northern Tier Childrens Home | Harrison Valley | PA | 0.3565 mg/L 2377% above the EPA limit of 0.0150 mg/L |
| Pine Landing Condos | Freedom | NH | 0.3350 mg/L 2233% above the EPA limit of 0.0150 mg/L |
| Sugarwood on the Saco | Bartlett | NH | 0.3240 mg/L 2160% above the EPA limit of 0.0150 mg/L |
| Sanford Municipal Water System | Sanford | TX | 0.3180 mg/L 2120% above the EPA limit of 0.0150 mg/L |
Lead in the EPA Six-Year Review
28,796 of 36,077 suppliers had Lead detected under this programme, and 4,848 measured above the EPA limit of 15 µg/L. SYR4
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Eei Meadows Complex | Dallas | PA | 1273.22 µg/L 8488% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Edgewood Water Department | Anderson | IN | 1122.04 µg/L 7480% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Grasmere Water Pct/Main | Goffstown | NH | 1114.42 µg/L 7429% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Baden Boro Water Dept | Baden | PA | 1038.65 µg/L 6924% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Waynesville, Town of | Waynesville | NC | 1008.3 µg/L 6722% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| City of Morgan Hill | Morgan Hill | CA | 1000 µg/L 6667% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Carlsbad Desalination Plant | Carlsbad | CA | 974 µg/L 6493% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| North Lenoir Water Corp | Kinston | NC | 958 µg/L 6387% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Mt. Pleasant | — | — | 951.195 µg/L 6341% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Northside | Cass Lake | MN | 928.8 µg/L 6192% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Garrett Water Utility | Garrett | IN | 918.1 µg/L 6121% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Timberland Mhc | — | — | 896 µg/L 5973% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Vineland | Onamia | MN | 888.2 µg/L 5921% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Ancilla Domini (Convent) | Donaldson | IN | 827.75 µg/L 5518% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Ayden Town of | Ayden | NC | 820.6 µg/L 5471% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Windfall Water Department | Windfall | IN | 772.43 µg/L 5150% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Hamburg Muni Water&Sewer Auth | Hamburg | PA | 761.2 µg/L 5075% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Chapel Grove Mhp | Gastonia | NC | 753.2 µg/L 5021% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Blacksburg, Town of | Blacksburg | VA | 741.497 µg/L 4943% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Winter Waterworks | Winter | WI | 724.75 µg/L 4832% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Minco | Minco | OK | 681.17 µg/L 4541% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Pacific Missile Range Facility | Pmrf Housing (Dho) | HI | 668.9 µg/L 4459% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Owls Nest Golf Club and Condos | Thornton | NH | 668.857 µg/L 4459% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Douglas | Douglas | OK | 655.875 µg/L 4373% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
| Meadows - Gables I Water System | Rutland Town | VT | 652.625 µg/L 4351% of the EPA limit, at the 95th percentile of samples — 15 µg/L |
Frequently asked questions about Lead
What is Lead in drinking water?
Lead usually enters water from old service lines and household plumbing, not the source. The 90th-percentile result is what the EPA action level applies to; lead harms children's brain development.
What is the EPA limit for Lead?
The EPA's Maximum Contaminant Level for Lead is 0.0150 mg/L, and its health goal (MCLG) is 0.0 mg/L. A result above the limit means the supplier must act; the goal is the level at which no health effects are expected.
How common is Lead in US tap water?
Lead is measured at every supplier the rule covers, so a result on file is not the same as a problem. Of the 47,629 suppliers with results, 1,094 (2.3%) are above the EPA action level.