EPA SDWIS ยท Santa Barbara County, California ยท 255 providers profiled
Santa Barbara County, CA Water Quality Report
Santa Barbara County is served by 255 major public water systems on file with the EPA.
Data current as of July 2026
๐Straight from EPA
๐งชReal Lab Results
๐ Updated Quarterly
๐ Local Expertise
Results for Santa Barbara County, CA
255 water providers on file for this county, sorted by population served.
Quick answer: Santa Barbara County has 255 water providers profiled, sorted by population served.
Nitrogen-Ammoniaas (N)
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Totalkjeldahlnitrogen (INWATERMG/L)
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
pH
Boron, Total
Manganese
Conductivity (at 25ยฐC)
Nitrate
Lead Summary
Chromium, Hex
Arsenic
Selenium
TTHM
Lead
Bromoform
Dibromoaceticacid
Copper, Free
Temperature (CENTIGRADE)
Nitrate-Nitrite
Turbidity
Gross Alpha Particle Activity
Barium
pH, Field
Totalhaloaceticacids (HAA5)
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monobromoaceticacid
Monochloroaceticacid
Aggressive Index
Langelier Index (pH(s))
Odor
Vanadium, Total
Chlorobenzene
Zinc
Iron
Perfluorobutanesulfonicacid (PFBS)
Perfluoroheptanoicacid (PFHPA)
Perfluorohexanesulfonicacid (PFHxS)
Perfluoroctanesulfonicacid (PFOS)
Perfluoroctanoicacid (PFOA)
Perfluorohexanoicacid (PFHXA)
Perfluorobutanoicacid (PFBA)
Perfluoropentanoicacid (PFPEA)
Perchlorate
Chromium
Radium-228
Combined Uranium
Combined Radium (-226 & -228)
Toluene
Color
Nickel
Foamingagents (SURFACTANTS)
Aluminum
Carbon, Total
Copper Summary
Radium-226
Cadmium
Methyltert-Butylether
Bromate
Lithium
PFPEA
PFHXA
Gross Beta Particle Activity
38-Strontium-90
Cyanide
Langelier Index (Source Temp.)
Bromide
PFBS
Violations on file
Coliform (TCR)
Older/archived health-based violation
Found at 9 of 255 providers
Nitrate
Older/archived health-based violation
Found at 6 of 255 providers
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Selenium
Older/archived health-based violation
Found at 3 of 255 providers
Arsenic
Older/archived health-based violation
Found at 1 of 255 providers
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Lead And Copper Rule Revisions
Currently open health violation
Found at 11 of 255 providers
Revised Total Coliform Rule
Currently open health violation
Found at 1 of 255 providers
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Manganese
Detected: 370 UG/L (ppb)
Found at 27 providers
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Lead Summary
Detected: 0.19 mg/L (ppm)
Found at 88 providers
Chromium, Hex
Detected: 27 UG/L (ppb)
Found at 37 providers
Arsenic
Detected: 19 UG/L (ppb)
Found at 20 providers
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Selenium
Detected: 110 UG/L (ppb)
Found at 22 providers
Lead
Detected: 12 UG/L (ppb)
Found at 9 providers
A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.
Copper, Free
Detected: 1200 UG/L (ppb)
Found at 23 providers
Barium
Detected: 457 UG/L (ppb)
Found at 14 providers
Vanadium, Total
Detected: 25 UG/L (ppb)
Found at 10 providers
Zinc
Detected: 1200 UG/L (ppb)
Found at 8 providers
Iron
Detected: 3000 UG/L (ppb)
Found at 23 providers
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Chromium
Detected: 38 UG/L (ppb)
Found at 15 providers
Occurs in two forms โ trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Combined Uranium
Detected: 12 PCI/L
Found at 18 providers
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Nickel
Detected: 12 UG/L (ppb)
Found at 4 providers
Aluminum
Detected: 95 UG/L (ppb)
Found at 4 providers
Copper Summary
Detected: 2.32 mg/L (ppm)
Found at 6 providers
Cadmium
Detected: 1.2 UG/L (ppb)
Found at 2 providers
38-Strontium-90
Detected: 1.31 PCI/L
4/17/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 116 UG/L (ppb)
Found at 43 providers
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Bromoform
Detected: 94 UG/L (ppb)
Found at 35 providers
Totalhaloaceticacids (HAA5)
Detected: 29 UG/L (ppb)
Found at 31 providers
Chloroform
Detected: 23 UG/L (ppb)
Found at 32 providers
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 13.2 UG/L (ppb)
Found at 32 providers
Dibromochloromethane
Detected: 19.4 UG/L (ppb)
Found at 37 providers
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 190 MG/L (ppm)
Found at 35 providers
Sulfate
Detected: 990 MG/L (ppm)
Found at 33 providers
Fluoride
Detected: 1.9 MG/L (ppm)
Found at 43 providers
Often added deliberately for dental health; can also occur naturally.
Boron, Total
Detected: 530 UG/L (ppb)
Found at 20 providers
Nitrate
Detected: 34 MG/L (ppm)
Found at 76 providers
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Nitrate-Nitrite
Detected: 28 MG/L (ppm)
Found at 14 providers
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 93 MG/L (ppm)
Found at 34 providers
Potassium
Detected: 8 MG/L (ppm)
Found at 32 providers
Sodium
Detected: 170 MG/L (ppm)
Found at 36 providers
Calcium
Detected: 230 MG/L (ppm)
Found at 35 providers
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 920 MG/L (ppm)
Found at 32 providers
pH
Detected: 8.3 PH
Found at 23 providers
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Gross Alpha Particle Activity
Detected: 12.3 PCI/L
Found at 24 providers
pH, Field
Detected: 8.21 PH
Found at 13 providers
Langelier Index (pH(s))
Detected: 1.2 LANG
Found at 17 providers
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 72.2 ยตg/L (ppb)
Found at 15 providers
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFPEA
Detected: 0.0059 ยตg/L (ppb)
6/10/2025
PFHXA
Detected: 0.0045 ยตg/L (ppb)
6/10/2025
PFBS
Detected: 0.0035 ยตg/L (ppb)
9/16/2025
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Chlorobenzene
Detected: 0.5 UG/L (ppb)
7/22/2025
Bromide
Detected: 0.05 MG/L (ppm)
10/6/2025
Petroleum Compounds
Substances associated with fuel or petroleum contamination
Toluene
Detected: 0.7 UG/L (ppb)
1/23/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 510 MG/L (ppm)
Found at 38 providers
Other
Additional substances tested that don't fit neatly into the categories above
Nitrogen-Ammoniaas (N)
Detected: 0.49 MG/L (ppm)
8/20/2025
Totalkjeldahlnitrogen (INWATERMG/L)
Detected: 1.3 MG/L (ppm)
8/20/2025
Alkalinity, Total
Detected: 420 MG/L (ppm)
Found at 41 providers
TDS
Detected: 1700 MG/L (ppm)
Found at 42 providers
Conductivity (at 25ยฐC)
Detected: 1940 UMHO/CM
Found at 34 providers
Dibromoaceticacid
Detected: 17 UG/L (ppb)
Found at 27 providers
Temperature (CENTIGRADE)
Detected: 23 C
Found at 7 providers
Turbidity
Detected: 20 NTU
Found at 21 providers
A measure of water cloudiness from suspended particles.
Dichloroaceticacid
Detected: 12 UG/L (ppb)
Found at 28 providers
Trichloroaceticacid
Detected: 10 UG/L (ppb)
Found at 23 providers
Monobromoaceticacid
Detected: 2 UG/L (ppb)
Found at 5 providers
Monochloroaceticacid
Detected: 4 UG/L (ppb)
Found at 8 providers
Aggressive Index
Detected: 13.1 AGGR
Found at 20 providers
Odor
Detected: 128 TON
Found at 8 providers
Perfluorobutanesulfonicacid (PFBS)
Detected: 7 NG/L (ppt)
Found at 3 providers
Perfluoroheptanoicacid (PFHPA)
Detected: 9.8 NG/L (ppt)
Found at 2 providers
Perfluorohexanesulfonicacid (PFHxS)
Detected: 5.1 NG/L (ppt)
Found at 2 providers
Perfluoroctanesulfonicacid (PFOS)
Detected: 7.9 NG/L (ppt)
Found at 2 providers
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroctanoicacid (PFOA)
Detected: 15 NG/L (ppt)
Found at 2 providers
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluorohexanoicacid (PFHXA)
Detected: 18 NG/L (ppt)
Found at 2 providers
Perfluorobutanoicacid (PFBA)
Detected: 6.2 NG/L (ppt)
Found at 4 providers
Perfluoropentanoicacid (PFPEA)
Detected: 18 NG/L (ppt)
Found at 2 providers
Perchlorate
Detected: 21.8 UG/L (ppb)
Found at 9 providers
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Radium-228
Detected: 0.895 PCI/L
Found at 7 providers
Combined Radium (-226 & -228)
Detected: 1.09 PCI/L
Found at 4 providers
A naturally occurring radioactive element found in some groundwater.
Color
Detected: 20 UNITS
Found at 5 providers
Foamingagents (SURFACTANTS)
Detected: 0.14 MG/L (ppm)
Found at 2 providers
Carbon, Total
Detected: 6.8 MG/L (ppm)
Found at 5 providers
Radium-226
Detected: 0.554 PCI/L
Found at 4 providers
Methyltert-Butylether
Detected: 4.5 UG/L (ppb)
3/31/2025
Bromate
Detected: 8.3 UG/L (ppb)
1/13/2025
Gross Beta Particle Activity
Detected: 5.83 PCI/L
Found at 2 providers
Cyanide
Detected: 8.4 UG/L (ppb)
3/13/2025
Langelier Index (Source Temp.)
Detected: 0.42 LANG
Found at 4 providers
Filtration considerations: General system types, not a specific product recommendation.