Serving roughly 3,600 people in Santa Barbara County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for MISSION HILLS CSD
1 water provider directly on file, serving roughly 3,600 people in Santa Barbara County, California.
Quick answer: MISSION HILLS CSD has no violations on file. One reading is worth knowing about: Lithium was measured at 61µg/L, among the highest of the 255 providers on file in this area. It's the most notable figure in this system's record among its 255 local peers.
Lead Summary
Copper Summary
Lithium
Totalhaloaceticacids (HAA5)
TTHM
Bromoform
Dibromochloromethane
Dibromoaceticacid
Copper, Free
Iron
Manganese
Sodium
Magnesium
Potassium
Calcium
Alkalinity, Bicarbonate
TDS
Sulfate
Chloride
Nitrate
Boron, Total
Perchlorate
Utility MISSION HILLS CSDPopulation served 3,600Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Copper Summary
Detected: 1.7 mg/L (ppm)
12/31/2021
Copper, Free
Detected: 370 UG/L (ppb)
8/8/2025
Iron
Detected: 220 UG/L (ppb)
10/8/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 71 UG/L (ppb)
10/8/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 2.8 UG/L (ppb)
8/13/2025
TTHM
Detected: 14.3 UG/L (ppb)
8/13/2025
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: 11.1 UG/L (ppb)
8/13/2025
Dibromochloromethane
Detected: 3.2 UG/L (ppb)
8/13/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 130 MG/L (ppm)
10/22/2025
Chloride
Detected: 150 MG/L (ppm)
10/22/2025
Nitrate
Detected: 2.2 MG/L (ppm)
10/22/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Boron, Total
Detected: 150 UG/L (ppb)
10/22/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Sodium
Detected: 82 MG/L (ppm)
10/22/2025
Magnesium
Detected: 24 MG/L (ppm)
10/22/2025
Potassium
Detected: 3.3 MG/L (ppm)
10/22/2025
Calcium
Detected: 71 MG/L (ppm)
10/22/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 61 µg/L (ppb)
7/11/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 150 MG/L (ppm)
10/22/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dibromoaceticacid
Detected: 2.8 UG/L (ppb)
8/13/2025
TDS
Detected: 570 MG/L (ppm)
10/22/2025
Perchlorate
Detected: 1.1 UG/L (ppb)
4/24/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.