WOODLAND is served by 5 water providers on file with the EPA.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for WOODLAND, CA
5 water providers on file serving this city.
Quick answer: WOODLAND's water has no violations on file and no single reading stands out against its peers (5 other providers in this area). It serves roughly 61,462 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Nitrate
Chromium, Hex
Arsenic
Sodium
Bromide
Alkalinity, Total
Alkalinity, Bicarbonate
Carbon, Total
TDS
Chloride
Turbidity
Conductivity (at 25°C)
Aggressive Index
Langelier Index (pH(s))
Magnesium
Calcium
Hardness, Total (ASCACO3)
Sulfate
Gross Alpha Particle Activity
Gross Beta Particle Activity
pH
Odor
Iron
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Chlorate
Bromate
Aluminum
Lithium
Copper, Free
Potassium
Silica
Orthophosphate
Nitrogen-Ammoniaas (N)
Fluoride
Nitrate-Nitrite
Combined Uranium
Radium-228
Combined Radium (-226 & -228)
Chromium
Barium
Selenium
Violations on file
Selenium
Older/archived health-based violation
Found at 1 of 5 providers
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
Found at 4 providers
Chromium, Hex
Detected: 18 UG/L (ppb)
Found at 3 providers
Arsenic
Detected: 6.6 UG/L (ppb)
Found at 2 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.
Iron
Detected: 84 UG/L (ppb)
Found at 2 providers
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Aluminum
Detected: 52 UG/L (ppb)
7/2/2025
Copper, Free
Detected: 51 UG/L (ppb)
8/6/2025
Combined Uranium
Detected: 1.5 PCI/L
9/11/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Chromium
Detected: 19 UG/L (ppb)
9/11/2025
Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Barium
Detected: 270 UG/L (ppb)
9/11/2025
Selenium
Detected: 15 UG/L (ppb)
9/11/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 9.8 UG/L (ppb)
Found at 2 providers
TTHM
Detected: 21 UG/L (ppb)
Found at 2 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.
Chloroform
Detected: 16 UG/L (ppb)
Found at 2 providers
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 4.3 UG/L (ppb)
Found at 2 providers
Dibromochloromethane
Detected: 1.4 UG/L (ppb)
Found at 2 providers
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 7.7 MG/L (ppm)
Found at 3 providers
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Chloride
Detected: 77 MG/L (ppm)
Found at 2 providers
Sulfate
Detected: 37 MG/L (ppm)
Found at 2 providers
Fluoride
Detected: 0.13 MG/L (ppm)
9/11/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 6.6 MG/L (ppm)
9/18/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Sodium
Detected: 76 MG/L (ppm)
Found at 2 providers
Magnesium
Detected: 57 MG/L (ppm)
Found at 2 providers
Calcium
Detected: 74 MG/L (ppm)
Found at 2 providers
Potassium
Detected: 2.6 MG/L (ppm)
9/11/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 0.76 LANG
Found at 2 providers
Hardness, Total (ASCACO3)
Detected: 420 MG/L (ppm)
Found at 2 providers
Gross Alpha Particle Activity
Detected: 4.66 PCI/L
Found at 2 providers
pH
Detected: 8 PH
Found at 2 providers
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Orthophosphate
Detected: 1.1 MG/L (ppm)
8/7/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 45.9 µg/L (ppb)
12/12/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Bromide
Detected: 0.015 MG/L (ppm)
9/3/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 400 MG/L (ppm)
Found at 2 providers
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 400 MG/L (ppm)
Found at 2 providers
Carbon, Total
Detected: 1.3 MG/L (ppm)
Found at 2 providers
TDS
Detected: 680 MG/L (ppm)
Found at 2 providers
Turbidity
Detected: 6.3 NTU
Found at 2 providers
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 1000 UMHO/CM
Found at 2 providers
Aggressive Index
Detected: 12.8 AGGR
Found at 2 providers
Gross Beta Particle Activity
Detected: 8.14 PCI/L
4/2/2025
Odor
Detected: 5.7 TON
Found at 2 providers
Dichloroaceticacid
Detected: 5.6 UG/L (ppb)
Found at 2 providers
Trichloroaceticacid
Detected: 4.1 UG/L (ppb)
Found at 2 providers
Chlorate
Detected: 110 UG/L (ppb)
10/1/2025
Bromate
Detected: 99 UG/L (ppb)
10/1/2025
Silica
Detected: 20 MG/L (ppm)
8/7/2025
Nitrogen-Ammoniaas (N)
Detected: 0.71 MG/L (ppm)
8/7/2025
Radium-228
Detected: 1.17 PCI/L
8/7/2025
Combined Radium (-226 & -228)
Detected: 1.13 PCI/L
8/7/2025
A naturally occurring radioactive element found in some groundwater.
Filtration considerations: General system types, not a specific product recommendation.