Short answer: In the 2023–2026 records we hold for North Alamo, no listed result is above a legal limit, but 3 health-based violations are on record (EPA SDWIS). Also worth knowing: lithium sits above a screening level. 7 substances were detected and 24 were tested and not detected. The water is from North Alamo WSC, serving 171,195 residents.
PFHxSPerfluorohexanesulfonic acid (PFHxS)Within reference · Federal MCL10 ng/L federal MCL (2024)3.4ng/L▾
① · Measured
3.4 ng/L, sampled 2023-02-15 to 2023-12-12. EPA UCMR 5.
② · Compared
10 ng/L federal MCL (2024): a legal limit. That limit is judged on a yearly average, and water systems have until 2029 to meet it.
③ · Meaning
Detected at up to 3.4 ng/L (below the 10 ng/L limit EPA set in 2024). That limit is judged on a yearly average, and water systems have until 2029 to meet it.
④ · Where it matters
Comes with the source water; home plumbing does not add it.
⑤ · What to do
Test your own tap first. To reduce it: Reverse osmosis, or carbon certified for PFAS (NSF/ANSI 53 or 58, with PFHxS named on the listing).
NORTH ALAMO WSC (EPA PWSID TX1080029) delivers surface water to 171,195 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
Track record
3health-based violations in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score. All 5 EPA filings are listed below.
Not in this recordDisinfection by-products weren't monitored in this dataset
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
Health-based violations, last 10 years
Every filing is listed; the Track record score counts at most one per contaminant per year.
The record describes water leaving treatment and samples across the system. Pipes, solder and fixtures inside a building can add lead the record can’t see, especially in older buildings with lead service lines.
Each card names which North Alamo findings its current certification covers, and which it doesn't.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
Water Pitcher
Brita Elite Water Filter Pitcher
✓Lead: eligible, evidence match
–Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 3 more
Not suitable for (3)
Treating every tap in the home
A whole-home hard-water or scale problem
All PFAS: its evidence covers only the compounds it names
North Alamo WSC reported 1 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask North Alamo WSC whether your home’s line is on its list before you pay anyone.
Local help
Think your plumbing may be adding lead?
Call to be connected with a local plumbing provider about lead service lines, repiping or fixture replacement.
Your path: I live in an older buildingLead from plumbing is the main question
Older buildings may have lead service lines, solder or fixtures. North Alamo’s record shows lead at 0.318 µg/L (15 µg/L federal action level). Test first-draw water, then filter if needed.
5 of 29 PFAS tested were detected in North Alamo’s record (PFHxS 3.4 ng/L, PFBS 3 ng/L and PFHxA 3.5 ng/L, and more). If PFAS matters to you, a filter certification names each compound it covers.
Look forNSF/ANSI 53 or 58, with each compound you care about named on the listing
Your path: My water tastes of chlorineThe disinfectant is not in this record
Most utilities keep chlorine or chloramine in the pipes. A carbon filter certified for taste and odor reduces either; your utility can tell you which it uses.
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For North Alamo, PFAS were detected below their limits, and PFBA 12.2 ng/L and PFPeA 3.8 ng/L with no federal or state limit; the lead 90th-percentile result was 0.32 µg/L against the 15 µg/L action level. NORTH ALAMO WSC (PWSID TX1080029) has a Purity Score of 88/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap. What we found →
Who provides tap water in North Alamo?+
NORTH ALAMO WSC (PWS ID TX1080029) is the public water system on record for North Alamo, Texas, serving about 171,195 people. Confirm the utility on your water bill before acting on a specific finding. Water utility →
Where does North Alamo get its drinking water?+
Surface water (primary source of record in EPA SDWIS). Water utility →
Are PFAS "forever chemicals" in North Alamo's water?+
In EPA's UCMR 5 testing (2023-02-15 to 2023-12-12), PFBS was detected at 3 ng/L, below the 2,000 ng/L EPA health advisory, PFHxA was detected at 3.5 ng/L, below the 400,000 ng/L state limit and PFHxS was detected at 3.4 ng/L, below the 10 ng/L federal limit. PFBA (12.2 ng/L) and PFPeA (3.8 ng/L) were also detected; they have no federal or state limit. What we found →
Is there lead in North Alamo's tap water?+
NORTH ALAMO WSC's most recent lead 90th-percentile result (2024–2026) was 0.32 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink. Your household →
What does the latest North Alamo water report show?+
PurityMap's current record for North Alamo holds 31 findings: 1 above a reference, 4 detected within the reference, 2 detected with no limit and 24 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass. Records →
EPA SDWIS, EPA UCMR 5 and utility reports, each dated and linked.
02Normalize
Units converted to one basis; a non-detect kept distinct from zero.
03Classify
Each result tagged by reference type: MCL, action level, screening level or aesthetic.
04Compare to the named reference
Every value sits against its own reference, never a blended one.
05Score
Measured subjects summarised at the water-system level; an open health-based violation caps the score.
06Match treatment
Treatment is matched to what was found; a product is called certified only when its current certification names it.
What the Purity Score means: a summary of this water system’s published record, capped while a health-based violation is open. It is not a test of any tap. NORTH ALAMO WSC · PWSID TX1080029 · Purity Score 88/100 (Good) · Confidence: moderate · Assessed at the water-system level
Lead at North Alamo WSC: 0.318 µg/L (90th percentile, 2024–2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.
