Are you concerned about nitrates in your well water? Oregon State University Extension Service is offering a series of free nitrate screenings at farmers markets and other events throughout the state.

Just bring half a cup of well water in a clean cup to be tested. Testing takes about 10 minutes.

Nitrates can cause serious health effects, such as the rare blue-baby syndrome in infants, according to OSU Extension. It is important to test your well water for nitrates every 1–3 years, especially in homes with infants and pregnant women.

Location and dates:

Harrisburg, July 16, 5–7:30 p.m., Harrisburg Summer Sounds, Riverfront Park, First St. and Smith St.

Scio, July 18, 9 a.m.–1 p.m., Scio Saturday Market, Linn County Lamb and Wool Fairgrounds, 38999 N.E. 1^st Ave.

McMinnville, July 23, 12–6 p.m., McMinnville Downtown Farmers Market, 230 N.E. Second St.

Lebanon, July 26, 1–4 p.m., Lacomb Grange Community Market, Lacomb Grange, 34100 E. Lacomb Road.

Florence, July 18, 3–6 p.m., Florence Farmers Market, Port of Siuslaw Boardwalk, 100 Harbor St.

Silverton, August 1, 9 a.m.–1 p.m., Silverton Farmers Market, 203 W. Main St.

Stayton, August 5, 3–7 p.m., Stayton Farmers Market, 138 N. 3^rd Ave.

Toledo, August 6, 10 a.m.–3 p.m., Toledo Community Market, 385 N.W. A St.

Eugene, August 8, 10 a.m.–2 p.m., Spencer Creek Farmers Market, 86013 Lorane Highway.