93449
Pismo Beach, CA
San Luis Obispo County · San Luis Obispo-Paso Robles, CA metro area
PISMO BEACH WATER DEPARTMENT

Is tap water in Arroyo Grande CCD (93449) safe to drink?

Higher concern
Last tested: November 2025
Source: Official EPA UCMR5 federal monitoring data. Last tested November 2025.
Township:
  • Arroyo Grande CCD, CA
Neighborhoods:
  • Sunset Palisades
  • Pismo Beach
  • ARroyo Trailer Park

The short answer for Arroyo Grande CCD (93449)

Pismo Beach tap water has lithium above EPA guidelines at 1.1× the limit (tested August 2025). See the full report with all tested compounds and filter options.

The health risk for Pismo Beach

lithium has been detected above EPA limits in this water system's recent tests. A certified filter designed for this contaminant type is strongly recommended.
  • lithium above limit.
lithium concentration (µg/L) August 2025
0 µg/L 10 µg/L 20 µg/L
10.800 µg/L
Detected
µg/L
10 µg/L
EPA limit
guideline
8% above limit
Comparison
vs. guideline
EPA limit: 10 µg/L | Your water: 10.800 µg/L
Certified Filters for Pismo Beach Tap Water

lithium was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.

Water filter recommendation for Pismo Beach tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473Removes 99.99% PFASMade in USABPA-free
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Most elevated compounds
Compound Measurement EPA Limit Comparison
lithium
Tested: August 2025 · Well 5 Treatment		 10.800 µg/L 10 µg/L 8% above limit
lithium
Tested: August 2025 · Well 23 Treatment		 10.000 µg/L 10 µg/L 100% of limit
View all tested compounds

Well 5 Treatment · Tested: August 2025

Compound Measurement EPA Limit Comparison
lithium 10.800 µg/L 10 µg/L 8% above limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Connection to Vista Del Mar · Tested: November 2025

Compound Measurement EPA Limit Comparison
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Well 23 Treatment · Tested: August 2025

Compound Measurement EPA Limit Comparison
lithium 10.000 µg/L 10 µg/L 100% of limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 93449

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline. Outlines appear when service-area boundary data is available for this ZIP.

Frequently Asked Questions about ZIP 93449 Tap Water

What contaminants are above EPA limits in ZIP 93449?

ZIP 93449 has lithium above EPA health guidelines in the latest available data at 1.1x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 93449 tap water remove lithium?

No. Boiling tap water does not remove lithium. Lithium is a dissolved mineral, so heat does not break it down and evaporation can actually concentrate it. Reverse osmosis (NSF/ANSI 58) is the most reliable at-home option for reducing lithium.

Do basic pitcher filters remove lithium?

Standard pitcher filters are not certified to reduce lithium. Reverse osmosis (NSF/ANSI 58) is the most widely available home option for reducing lithium in drinking water.

Who provides tap water in ZIP 93449?

Public records identify PISMO BEACH WATER DEPARTMENT as a primary water system associated with ZIP 93449. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 93449 tap water last tested?

The most recent test date used in this report is November 2025. EnviroClarity last refreshed this page on 2026-05-04.

Where can I find the official water quality report for ZIP 93449?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact PISMO BEACH WATER DEPARTMENT or visit their website for the latest official report covering ZIP 93449. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (lithium: 10 µg/L)
Last tested November 2025
Last page update 2026-05-04

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    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Protect your water in Pismo Beach → see certified filters