The Oregon Department of Environmental Quality will test the water in up to 100 wells for free in southern Deschutes County as part of a statewide study of groundwater pollution.
The testing will take place in the spring and again in the fall. Similar has been completed over the last five years in seven other areas around the state, including the Willamette Valley, Harney County and the Klamath Basin.
Southern Deschutes County has many shallow groundwater aquifers, making wells more vulnerable to contamination. The agency will test for nitrate, arsenic, pesticides and other contaminants.
DEQ spokesperson Harry Esteve said the agency will be collecting samples from a mix of private and public wells, as well as wells for irrigation and livestock, to get a better picture of which areas have more contamination. Some wells will be tested twice in spring and fall.
鈥淭he area is vulnerable to nitrate contamination from septic systems,鈥� Esteve said. 鈥淲e picked it because the data does show elevated nitrate levels in some water samples in the kind of shallow and vulnerable aquifers. But we don鈥檛 have a ton of data on it.鈥�
DEQ has been testing well water in Deschutes County since the late 1970s, and has detected more nitrate and arsenic pollution in the past decade. In 2014, some wells tested above the above the federal safe drinking water levels for both contaminants.
Drinking nitrate levels exceeding federal standards can cause that can lead to respiratory infections, thyroid dysfunction and stomach or bladder cancer. The Oregon Health Authority warns could lead to stomach pain, nausea, vomiting, diabetes or reproductive system disorders.
Esteve said the agency has already received many requests for testing in southern Deschutes County but not everyone that has submitted a request will qualify for testing.
鈥淏ased on the response, we will probably get more than the 60 to 100 that we want to test,鈥� he said.
Oregon has no water quality regulations on private wells. Homeowners are responsible for testing their wells for contamination and are encouraged to test regularly.
High levels of contamination could lead to a designation, which creates a committee tasked with figuring out what鈥檚 causing the high levels of contamination and developing plans to reduce it.
Oregon has three Groundwater Management Areas. The, created in 1990, has recently come under scrutiny from local residents and public officials because nitrate levels have actually increased since the creation of the committee, according to data from DEQ. Groundwater is the primary drinking water source for residents in Morrow and Umatilla counties, and it has been polluted for more than 30 years. In June, Morrow County declared a local state of emergency after. Some wells tested up to five times higher than the federal limit for safe drinking water.
The committee recently and is launching a new effort to reduce nitrate contamination.
Esteve said after DEQ collects the samples, the agency will determine how to move forward.
Residents interested in getting their well water tested can through email Groundwater.Monitoring@deq.oregon.gov or by calling 503-693-5736.
Residents can also and send them to an for results. The price for testing depends on the pollutant and testing kit provided by the lab. Some per pollutant.
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