Is Running Springs Water District Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: San Bernardino

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2024-01-01 → 2024-03-31
MR	Monitoring	Resolved	2024-01-01 → 2024-03-31
MR	Monitoring	Resolved	2024-01-01 → 2024-03-31
MR	Monitoring	Resolved	2024-01-01 → 2024-03-31
MR	Monitoring	Resolved	2023-10-01 → 2023-12-31
MR	Monitoring	Resolved	2023-10-01 → 2023-12-31
MR	Monitoring	Resolved	2023-10-01 → 2023-12-31
MR	Monitoring	Resolved	2023-10-01 → 2023-12-31
MR	Monitoring	Resolved	2016-01-01 → 2016-12-31
MR	Monitoring	Resolved	2016-01-01 → 2016-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFHXS	0.0955 µg/L	8/21	2025
Pfhxa	0.0190 µg/L	7/21	2025
Pfpea	0.0144 µg/L	7/21	2025
PFOS	0.2365 µg/L	6/21	2025
PFBS	0.0117 µg/L	4/21	2025
Pfhpa	0.0128 µg/L	4/21	2025
PFOA	0.0159 µg/L	4/21	2025
Pfpes	0.0108 µg/L	2/21	2025
Pfba	0.0056 µg/L	1/21	2025
Pfhps	0.0055 µg/L	1/21	2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Combined Uranium	84.93 µg/L 283% of the EPA limit, at the 95th percentile of samples — 30 µg/L worst single sample: 92.38 µg/L	141/372	SYR4	2012–2019
Nitrate	1514.2 µg/L 15% of the EPA limit 10000 µg/L worst single sample: 1700 µg/L	72/144	SYR4	2012–2019
TTHM	42.845 µg/L 54% of the EPA limit 80 µg/L worst single sample: 57.8 µg/L	44/44	SYR4	2013–2019
Bromodichloromethane	4.4 µg/L No EPA limit set worst single sample: 5.2 µg/L	41/44	SYR4	2013–2019
Dibromochloromethane	12.8 µg/L No EPA limit set worst single sample: 14.1 µg/L	41/44	SYR4	2013–2019
Bromoform	27.12 µg/L No EPA limit set worst single sample: 37.9 µg/L	37/44	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	5.975 µg/L 10% of the EPA limit 60 µg/L worst single sample: 6.6 µg/L	34/44	SYR4	2013–2019
Chloroform	5.2 µg/L No EPA limit set worst single sample: 7.2 µg/L	33/44	SYR4	2013–2019
Dibromoacetic Acid	6.025 µg/L No EPA limit set worst single sample: 6.6 µg/L	32/44	SYR4	2013–2019
Lead	0.0081 mg/L 54% of the EPA limit 0.0150 mg/L	32/32	LCR	2025
Lithium	106 µg/L No EPA limit set	17/21	UCMR-5	2025
Nitrate-Nitrite	952000 µg/L 9520% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 980000 µg/L	8/19	SYR4	2013–2019
Fluoride	185 µg/L 4.6% of the EPA limit 4000 µg/L worst single sample: 200 µg/L	7/22	SYR4	2012–2019
Dichloroacetic Acid	1.08 µg/L No EPA limit set worst single sample: 1.1 µg/L	5/44	SYR4	2013–2019
Arsenic	9.56 µg/L 96% of the EPA limit 10 µg/L worst single sample: 9.6 µg/L	2/22	SYR4	2012–2019
Dichloromethane	0.9600 µg/L 19% of the EPA limit 5 µg/L	1/18	SYR4	2012–2018

84 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfmbaPfmpaPFNAPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: CROWDER, AMIE
Phone: 909-867-2766
Email: [email protected]

Frequently asked questions about Running Springs Water District

Is Running Springs Water District tap water safe to drink?

EPA monitoring detected 26 contaminants in Running Springs Water District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Running Springs Water District's water?

EPA monitoring detected Combined Uranium, Nitrate, TTHM, Bromodichloromethane, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Running Springs Water District serve?

Running Springs Water District reports serving 5,268 people in California, per its EPA record.

Has Running Springs Water District had any water quality violations?

The EPA has 10 violations on file for Running Springs Water District, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.