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Reid Road MUD 2

The Woodlands, TX · serves 4,602 · GroundwaterTX1011928
Worth watching
Naturally occurring lithium detected. No federal limit. Research is preliminary; see the lithium learn page for context.
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Measured in your 2025 water report
From your utility's Consumer Confidence Report · 15 contaminants tested
Above limit
Approaching limit
Within limits
Regulated contaminants — legally enforceable limits
Arsenic▸
0.0026 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
A naturally occurring element found in rock and soil. Gets into drinking water through erosion of natural deposits or runoff from industrial and agricultural sources.
Why it matters
Long-term exposure is linked to increased risk of skin, bladder, and lung cancer. There is no safe level for arsenic — the MCL of 10 µg/L balances health protection with treatment feasibility.
What to do
If your water is near or above the limit, a reverse osmosis filter certified to NSF/ANSI 58 removes over 90% of arsenic. Point-of-use filters at the kitchen tap are effective and affordable.
What the research says
Multiple peer-reviewed studies have found congenital heart defects including atrial septal defects at concentrations as low as 0.0005 mg/L — 20x below the US federal limit.
Barium▸
0.327 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
A naturally occurring metal found in mineral deposits. Enters water through erosion of natural deposits or discharge from drilling and metal refining operations.
Why it matters
At high levels, barium can cause increased blood pressure. Levels well below the MCL of 2 mg/L are not a health concern.
What to do
No action needed at typical detection levels. Barium is rarely found near its MCL in treated drinking water.
Ethylbenzene▸
0.0012 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
No additional information available for this contaminant.
Fluoride▸
0.14 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
Naturally occurring mineral, also added to many water systems to prevent tooth decay. The MCL (4 mg/L) is much higher than the typical added amount (0.7 mg/L).
Why it matters
At levels near the MCL, long-term exposure can cause skeletal fluorosis (bone pain and tenderness). The secondary standard of 2 mg/L triggers a required public notice about dental fluorosis risk in children.
What to do
Levels below 2 mg/L are within the range considered safe. If above 2 mg/L, children under 9 may be at risk for dental fluorosis — talk to your pediatric dentist.
What the research says
Multiple peer-reviewed studies have found lower IQ in children and potential thyroid disruption at concentrations as low as 1.5 mg/L — 3x below the US federal limit.
Gross Alpha▸
7.5 pCi/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
A screening test that measures total alpha radiation from all radioactive elements in water — including radium, uranium, and radon.
Why it matters
The MCL of 15 pCi/L protects against long-term cancer risk from radiation exposure.
What to do
No action needed at typical detection levels. If near the MCL, reverse osmosis and ion exchange filters can reduce radioactive contaminants.
Selenium▸
0.0035 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
A naturally occurring element essential in small amounts but toxic at high levels. Enters water from erosion of natural deposits and discharge from mines and refineries.
Why it matters
Long-term exposure above the MCL of 0.05 mg/L can cause hair and fingernail loss, numbness, and circulation problems.
What to do
No action needed at typical detection levels. Selenium is rarely found near its MCL in treated water.
Uranium▸
9.7 µg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
What is it?
A naturally occurring radioactive metal found in some groundwater, especially in granite and volcanic rock formations. Common in the western US.
Why it matters
The MCL of 20 pCi/L (or 0.030 mg/L) protects against kidney toxicity and cancer risk. Uranium is both a chemical toxin and a radiological hazard.
What to do
Reverse osmosis and ion exchange filters can reduce uranium. If your system uses groundwater in a uranium-bearing geology, a point-of-use filter is good protection.
Xylenes▸
0.0063 mg/L
Reference: MCL
Federal Maximum Contaminant Level. The legally enforceable EPA drinking-water standard.
No additional information available for this contaminant.
Lead & copper — tested at your tap
Copper▸
0.186 mg/L
Reference: Action level
Federal Lead and Copper Rule action level. Legally enforceable. Exceeding it triggers required corrective action by the utility.
What is it?
Leaches from copper household plumbing and pipes. Some copper is a normal part of drinking water infrastructure.
Why it matters
Short-term exposure above the action level of 1.3 mg/L can cause gastrointestinal distress. Long-term exposure can cause liver and kidney damage. At typical detected levels (well below the AL), copper is not a health concern.
What to do
If above the action level, run your tap for 30 seconds before drinking. Copper levels decrease as water flows through the pipes.
Disinfection byproducts
DBCM▸
7.1 µg/L
Reference: MCLG
Maximum Contaminant Level Goal. A non-enforceable EPA health goal, set at the concentration where no known or anticipated adverse health effect would occur. The legally enforceable standard for this contaminant lives at the parent-group level (e.g. TTHM, HAA5), not on the individual species.
What is it?
A brominated trihalomethane formed when chlorine reacts with bromide-containing organic matter. More common in source waters with higher bromide levels — often coastal or groundwater systems.
Why it matters
EPA sets the MCLG at 0.06 mg/L based on liver and kidney effects. Some evidence suggests DBCM may be carcinogenic, though the data is less clear than for BDCM and bromoform. Regulated together with the other three trihalomethanes under TTHM.
What to do
Like other THMs, DBCM forms in the distribution system as chlorine reacts over time. A point-of-use carbon-block filter (NSF/ANSI 53) reduces it along with related compounds.
WHO recommendation
Nickel▸
0.0013 mg/L
Reference: WHO guideline
World Health Organization drinking-water guideline. International guidance, not legally enforced in the US.
What is it?
A metal that enters water from natural deposits and industrial discharge. The federal MCL was remanded (withdrawn) in 1995 but monitoring continues.
Why it matters
No current federal MCL. At typical detection levels, nickel in drinking water is not considered a health concern for most people. People with nickel allergies may be more sensitive.
What to do
No action needed at typical detection levels.
% of limit

CCR data in early access — values are extracted from utility PDFs and may contain errors. Verify with your utility's 2025 CCR report.

Source: REID ROAD MUD 2 Consumer Confidence Report 2025 · Extracted by WaterScore
Measured data
Private Well Risk

Do you have or use a private well? Measured concentrations from nearby private wells sampled within 5 miles.

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1 site within 10 mi
Nearby Superfund Sites

1 EPA Superfund site within 10 miles. Proximity does not necessarily mean your water is affected.

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2 wells
Water Sources

The Woodlands pumps water from two groundwater wells drawing from local groundwater. Emergency backup sources are available if primary supplies are disrupted.

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