Manganese Contamination

Manganese in New Jersey Drinking Water

Ranked by max manganese detected (µg/L) · UCMR 4 data (2018–2020) · Data from EPA SDWIS & UCMR

302

Cities Tested

Over SMCL

29%

% Over SMCL

56.7 µg/L

State Avg

▲ 11% vs national

vs National

323

Health Violations

Analysis

Manganese in New Jersey: what the data shows

New Jersey has 302 cities with manganese data from the EPA's UCMR 4 program (2018–2020). Manganese exceeded the 50 µg/L EPA secondary MCL in 89 of those cities. The state average max detected level is 56.7 µg/L. Manganese occurs naturally in groundwater and surface water. Elevated levels are common in areas with iron-rich geology and in systems that draw from reservoirs with low dissolved oxygen. The secondary MCL of 50 µg/L is based on aesthetic concerns (taste, staining), but health-based guidelines suggest neurological effects at higher concentrations. Emerging research links chronic manganese exposure in drinking water to neurodevelopmental effects in children, including reduced IQ and behavioral issues. Oxidation filtration and water softeners are effective at removing manganese from household water.

Comparison

Cities exceeding 50 µg/L EPA Secondary MCL

New Jersey

29%

89 of 302 cities

→ ▲ 11% above national rate (worse)

National avg

18%

716 of 4016 cities

City Map

Manganese data across New Jersey

Each dot is a city with UCMR 4 manganese testing data. Cities where manganese exceeds the 50 µg/L EPA secondary MCL are highlighted. Size reflects population served.

Worst Offenders

Top 10 cities by manganese level in New Jersey

Highest Manganese levels (µg/L)

All Cities

All New Jersey cities ranked by manganese level

#	City	Level	Over SMCL?	Violations	Grade
1	Absecon City-0101	690.0 µg/L	Over SMCL	0	A-
2	Galloway Twp-0111	690.0 µg/L	Over SMCL	9	C-
3	Linwood City-0114	690.0 µg/L	Over SMCL	0	A-
4	Northfield City-0118	690.0 µg/L	Over SMCL	0	A-
5	Pleasantville City-0119	690.0 µg/L	Over SMCL	4	B-
6	Somers Point City-0121	690.0 µg/L	Over SMCL	0	A-
7	South River Boro-1223	351.0 µg/L	Over SMCL	7	F
8	East Newark Boro-0902	330.8 µg/L	Over SMCL	2	B+
9	Glassboro Boro-0806	268.0 µg/L	Over SMCL	16	C
10	Montville Twp.-1421	236.2 µg/L	Over SMCL	7	C
11	Parsippany Troy-Hills-1429	162.0 µg/L	Over SMCL	5	F
12	Elizabeth City- 2004	160.0 µg/L	Over SMCL	8	C-
13	Monroe Twp.-1213	160.0 µg/L	Over SMCL	6	F
14	Manchester Twp.-1518	142.0 µg/L	Over SMCL	23	F
15	Hillside Twp.-2007	121.0 µg/L	Over SMCL	32	C
16	Irvington Town-0709	121.0 µg/L	Over SMCL	32	C
17	Newark-0714	121.0 µg/L	Over SMCL	32	B-
18	East Orange City-0705	121.0 µg/L	Over SMCL	35	F
19	Bloomfield Town-0702	121.0 µg/L	Over SMCL	75	F
20	Belleville Town-0701	121.0 µg/L	Over SMCL	67	F
21	Hamilton Twp.-1103	112.0 µg/L	Over SMCL	37	F
22	Wildwood City-0514	111.0 µg/L	Over SMCL	6	B-
23	Collingswood Boro-0412	97.2 µg/L	Over SMCL	4	B+
24	Little Falls Twp.-1605	84.0 µg/L	Over SMCL	12	B
25	Bedminster Twp.-1801	84.0 µg/L	Over SMCL	0	B+
26	Belvidere Town-2103	84.0 µg/L	Over SMCL	0	B+
27	Berkeley Heights Twp.-2001	84.0 µg/L	Over SMCL	0	B+
28	Bernards Twp.-1802	84.0 µg/L	Over SMCL	0	B+
29	Bernardsville Boro-1803	84.0 µg/L	Over SMCL	0	B+
30	Chatham Boro-1404	84.0 µg/L	Over SMCL	5	D+
31	Chester Twp.-1407	84.0 µg/L	Over SMCL	0	B+
32	Far Hills Boro-1807	84.0 µg/L	Over SMCL	0	B+
33	Franklin Twp.-2105	84.0 µg/L	Over SMCL	0	B+
34	Frenchtown Boro-1011	84.0 µg/L	Over SMCL	0	B+
35	Harding Twp.-1413	84.0 µg/L	Over SMCL	2	F
36	Maplewood Twp.-0711	84.0 µg/L	Over SMCL	0	B+
37	Mendham Boro-1418	84.0 µg/L	Over SMCL	0	B+
38	Mendham Twp.-1419	84.0 µg/L	Over SMCL	2	D+
39	Millburn Twp.-0712	84.0 µg/L	Over SMCL	0	B+
40	Mount Olive Twp.-1427	84.0 µg/L	Over SMCL	42	F
41	New Providence Boro-2011	84.0 µg/L	Over SMCL	0	B+
42	Oxford Twp.-2117	84.0 µg/L	Over SMCL	12	F
43	Springfield Twp.-2017	84.0 µg/L	Over SMCL	0	B+
44	Summit City-2018	84.0 µg/L	Over SMCL	0	B+
45	Union Twp-.2019	84.0 µg/L	Over SMCL	0	B+
46	Warren Twp.-1820	84.0 µg/L	Over SMCL	0	B+
47	Livingston Twp.-0710	84.0 µg/L	Over SMCL	10	C
48	South Orange Village-0719	84.0 µg/L	Over SMCL	1	B
49	Florham Park Boro-1411	84.0 µg/L	Over SMCL	0	C-
50	North Caldwell Boro-0715	84.0 µg/L	Over SMCL	3	B-
51	Pompton Lakes Boro-1609	83.8 µg/L	Over SMCL	0	C
52	Sparta Twp.-1918	82.3 µg/L	Over SMCL	11	F
53	Franklin Twp.-1808	77.2 µg/L	Over SMCL	16	D+
54	South Brunswick Twp.-1221	77.2 µg/L	Over SMCL	1	B
55	Willingboro Twp.-0338	75.0 µg/L	Over SMCL	1	B
56	Wall Twp.-1352	73.8 µg/L	Over SMCL	5	C+
57	Aberdeen Twp-1330	73.0 µg/L	Over SMCL	22	F
58	Asbury Park City-1303	73.0 µg/L	Over SMCL	1	B+
59	Bay Head Boro-1502	73.0 µg/L	Over SMCL	1	B+
60	Bradley Beach Boro-1307	73.0 µg/L	Over SMCL	1	B+
61	Brick Twp.-1506	73.0 µg/L	Over SMCL	2	B
62	Eatontown Boro-1311	73.0 µg/L	Over SMCL	1	B+
63	Fair Haven Boro-1313	73.0 µg/L	Over SMCL	4	C
64	Holmdel Twp.-1318	73.0 µg/L	Over SMCL	1	B+
65	Lavalette Boro-1515	73.0 µg/L	Over SMCL	1	B
66	Little Silver Boro-1323	73.0 µg/L	Over SMCL	4	C
67	Long Branch City-1325	73.0 µg/L	Over SMCL	1	B+
68	Middletown Twp.-1331	73.0 µg/L	Over SMCL	9	C+
69	Neptune City Boro-1335	73.0 µg/L	Over SMCL	1	B+
70	Neptune Twp.-1334	73.0 µg/L	Over SMCL	1	B+
71	Ocean Twp.-1337	73.0 µg/L	Over SMCL	1	B+
72	Oceanport Boro-1338	73.0 µg/L	Over SMCL	1	B+
73	Red Bank Boro-1340	73.0 µg/L	Over SMCL	4	C
74	Rumson Boro-1342	73.0 µg/L	Over SMCL	1	B+
75	Shrewsbury Boro-1345	73.0 µg/L	Over SMCL	1	B+
76	Tinton Falls-1336	73.0 µg/L	Over SMCL	1	B+
77	Union Beach Boro-1350	73.0 µg/L	Over SMCL	1	B+
78	West Long Branch Boro-1353	73.0 µg/L	Over SMCL	1	B+
79	Toms River-1507	73.0 µg/L	Over SMCL	13	B
80	Freehold Twp.-1316	73.0 µg/L	Over SMCL	8	D+
81	Lakewood Twp.-1514	73.0 µg/L	Over SMCL	3	B-
82	Keansburg Boro-1321	73.0 µg/L	Over SMCL	6	F
83	Point Pleasant Boro-1524	67.8 µg/L	Over SMCL	2	C-
84	Medford Twp.-0320	66.2 µg/L	Over SMCL	2	C+
85	Jackson Twp.-1511	59.9 µg/L	Over SMCL	18	F
86	Clinton Town -1005	52.9 µg/L	Over SMCL	2	D
87	East Hanover Twp.-1410	51.2 µg/L	Over SMCL	8	C+
88	Lincoln Park Boro-1416	50.4 µg/L	Over SMCL	24	F
89	Wallington Boro-0265	50.2 µg/L	Over SMCL	4	D+
90	Lacey Twp.-1512	48.7 µg/L	No	2	B+
91	West Caldwell Boro-0721	48.1 µg/L	No	3	C
92	Moorestown Twp.-0322	47.0 µg/L	No	5	F
93	West Deptford Twp.-0820	45.5 µg/L	No	2	B
94	Washington Twp.-0818	45.0 µg/L	No	0	F
95	Monroe Twp.-0811	45.0 µg/L	No	9	C
96	Old Bridge Twp.-1209	43.4 µg/L	No	14	C+
97	Boonton Town-1401	43.3 µg/L	No	9	F
98	Winslow Twp.-0436	42.7 µg/L	No	37	F
99	Marlboro Twp.-1328	41.5 µg/L	No	13	C+
100	Matawan Boro-1329	41.5 µg/L	No	8	B
101	Cherry Hill Twp.-0409	41.1 µg/L	No	8	C-
102	Merchantville Boro-0424	41.1 µg/L	No	8	C+
103	Pennsauken Twp.-0427	41.1 µg/L	No	8	C-
104	Camden City-0408	41.1 µg/L	No	25	F
105	Hammonton Town-0113	40.6 µg/L	No	38	C+
106	Maple Shade Twp.-0319	39.7 µg/L	No	2	C+
107	Freehold Boro-1315	39.7 µg/L	No	3	B-
108	Rockaway Twp.-1435	39.6 µg/L	No	8	F
109	Vineland City-0614	39.0 µg/L	No	70	F
110	Franklin Twp.-0805	39.0 µg/L	No	19	F
111	Newfield Boro-0813	39.0 µg/L	No	5	B+
112	Stafford Twp.-1530	38.7 µg/L	No	3	B
113	Alpine Boro-0202	37.7 µg/L	No	2	B-
114	Bergenfield Boro-0203	37.7 µg/L	No	2	B-
115	Bogota Boro-0204	37.7 µg/L	No	2	B-
116	Carlstadt Boro-0205	37.7 µg/L	No	2	B-
117	Cliffside Park Boro-0206	37.7 µg/L	No	2	B-
118	Closter Boro-0207	37.7 µg/L	No	2	B-
119	Cresskill Boro-0208	37.7 µg/L	No	2	B-
120	Demarest Boro-0209	37.7 µg/L	No	2	B-
121	Dumont Boro-0210	37.7 µg/L	No	2	B-
122	East Rutherford Boro-0212	37.7 µg/L	No	2	B-
123	Edgewater Boro-0213	37.7 µg/L	No	2	B-
124	Emerson Boro-0214	37.7 µg/L	No	2	B-
125	Englewood City-0215	37.7 µg/L	No	2	B-
126	Englewood Cliffs Boro-0216	37.7 µg/L	No	2	B-
127	Fairview Boro-0218	37.7 µg/L	No	2	B-
128	Fort Lee Boro-0219	37.7 µg/L	No	2	B-
129	Guttenberg Town-0903	37.7 µg/L	No	2	B-
130	Hackensack City-0223	37.7 µg/L	No	2	B-
131	Harrington Park Boro-0224	37.7 µg/L	No	2	B-
132	Hasbrouck Heights-0225	37.7 µg/L	No	2	B-
133	Haworth Boro-0226	37.7 µg/L	No	2	B-
134	Hillsdale Boro-0227	37.7 µg/L	No	4	D
135	Leonia Boro-0229	37.7 µg/L	No	2	B-
136	Little Ferry Boro-0230	37.7 µg/L	No	2	B-
137	Lodi Boro-0231	37.7 µg/L	No	4	C+
138	Maywood Boro-0234	37.7 µg/L	No	2	B-
139	Montvale Boro-0236	37.7 µg/L	No	4	D
140	Moonachie Boro-0237	37.7 µg/L	No	2	B-
141	New Milford Boro-0238	37.7 µg/L	No	2	B-
142	North Bergen Twp.-0908	37.7 µg/L	No	2	B-
143	Northvale Boro-0240	37.7 µg/L	No	2	B-
144	Norwood Boro-0241	37.7 µg/L	No	2	B-
145	Old Tappan Boro-0243	37.7 µg/L	No	2	B-
146	Oradell Boro-0244	37.7 µg/L	No	2	B-
147	Palisades Park Boro-0245	37.7 µg/L	No	2	B-
148	Paramus Boro-0246	37.7 µg/L	No	2	B-
149	Ridgefield Boro-0249	37.7 µg/L	No	2	B-
150	Ridgefield Park Twp-0250	37.7 µg/L	No	2	B-
151	River Edge Boro-0252	37.7 µg/L	No	2	B-
152	River Vale Twp-0253	37.7 µg/L	No	2	B-
153	Rochelle Park Twp-0254	37.7 µg/L	No	2	B-
154	Rockleigh Boro-0255	37.7 µg/L	No	2	B-
155	Rutherford Boro-0256	37.7 µg/L	No	2	B-
156	Secaucus Town-0909	37.7 µg/L	No	2	B-
157	South Hackensack Twp-.0259	37.7 µg/L	No	2	B-
158	Teaneck Twp-.0260	37.7 µg/L	No	2	B-
159	Tenafly Boro-0261	37.7 µg/L	No	2	B-
160	Teterboro Boro-0262	37.7 µg/L	No	2	B-
161	Upper Saddle River-0263	37.7 µg/L	No	2	B-
162	Washington Twp.-0266	37.7 µg/L	No	2	B-
163	Weehawken Twp.-0911	37.7 µg/L	No	2	B-
164	West New York Town-0912	37.7 µg/L	No	2	B-
165	Westwood Boro-0267	37.7 µg/L	No	2	B-
166	Wood-Ridge Boro-0269	37.7 µg/L	No	2	B-
167	Woodcliff Lake Boro-0268	37.7 µg/L	No	4	D
168	Orange City-0717	37.7 µg/L	No	5	C+
169	Pennsville Twp.-1708	37.4 µg/L	No	5	C-
170	Gloucester City-0414	36.0 µg/L	No	2	A-
171	Gloucester Twp.-0415	35.5 µg/L	No	1	B-
172	Belmar Boro-1306	35.4 µg/L	No	3	B-
173	Wanaque Boro-1613	34.9 µg/L	No	10	D
174	Ringwood Boro-1611	34.9 µg/L	No	19	F
175	Jefferson Twp.-1414	34.6 µg/L	No	36	F
176	Montclair Town-0713	34.4 µg/L	No	1	B
177	Cape May City-0502	34.1 µg/L	No	9	B
178	Millville City-0610	33.9 µg/L	No	3	F
179	Brooklawn Boro-0407	32.2 µg/L	No	0	B
180	North Brunswick Twp.-1215	31.0 µg/L	No	17	F
181	Woodbridge Twp.-1225	29.0 µg/L	No	1	B
182	Hamilton Twp-0112	28.8 µg/L	No	4	C+
183	Weymouth Twp-.0123	28.8 µg/L	No	4	C
184	Woodbury City-0822	28.3 µg/L	No	0	B
185	Bordentown City-0303	27.0 µg/L	No	14	B-
186	Bordentown Twp.-0304	27.0 µg/L	No	14	B-
187	Fieldsboro Boro-0314	27.0 µg/L	No	17	C
188	Ridgewood Twp-0251	26.1 µg/L	No	12	D+
189	Evesham Twp.-0313	25.5 µg/L	No	1	A-
190	Saddle Brook Twp-0257	23.8 µg/L	No	13	B-
191	Elmwood Park Boro-0211	23.4 µg/L	No	12	B-
192	Pemberton Twp.-0329	22.3 µg/L	No	21	D
193	Ship Bottom Boro-1528	22.1 µg/L	No	2	A-
194	Bridgeton City-0601	21.5 µg/L	No	55	D
195	Fair Lawn Boro-0217	20.9 µg/L	No	8	F
196	Haledon Boro-1603	20.9 µg/L	No	22	C+
197	Berkeley Twp.-1505	20.5 µg/L	No	2	C+
198	Deptford Twp.-0802	20.4 µg/L	No	3	B-
199	Audubon Boro-0401	20.0 µg/L	No	0	B
200	Audubon Park Boro-0402	20.0 µg/L	No	0	B
201	Barrington Boro-0403	20.0 µg/L	No	0	B
202	Beverly City-0302	20.0 µg/L	No	0	B
203	Cinnaminson Twp.-0308	20.0 µg/L	No	0	B
204	Clementon Boro-0411	20.0 µg/L	No	0	C+
205	Delanco Twp.-0309	20.0 µg/L	No	0	B
206	Delran Twp.-0310	20.0 µg/L	No	0	B
207	Edgewater Park Twp.-0312	20.0 µg/L	No	0	B
208	Gibbsboro Boro-0413	20.0 µg/L	No	0	B
209	Haddon Heights Boro-0418	20.0 µg/L	No	0	B
210	Haddon Twp.-0416	20.0 µg/L	No	0	C+
211	Haddonfield Boro-0417	20.0 µg/L	No	0	B
212	Hi-Nella Boro-0419	20.0 µg/L	No	0	B
213	Laurel Springs Boro-0420	20.0 µg/L	No	0	B
214	Lawnside Boro-0421	20.0 µg/L	No	0	B
215	Lindenwold Boro-0422	20.0 µg/L	No	0	B
216	Magnolia Boro-0423	20.0 µg/L	No	0	B
217	Mount Ephraim Boro-0425	20.0 µg/L	No	0	B
218	Mount Laurel Twp.-0324	20.0 µg/L	No	1	B-
219	Oaklyn Boro-0426	20.0 µg/L	No	0	B
220	Palmyra Boro-0327	20.0 µg/L	No	0	B
221	Riverside Twp.-0330	20.0 µg/L	No	0	B
222	Riverton Boro-0331	20.0 µg/L	No	0	B
223	Runnemede Boro-0430	20.0 µg/L	No	0	B
224	Somerdale Boro-0431	20.0 µg/L	No	0	B
225	Stratford Boro-0432	20.0 µg/L	No	0	B
226	Voorhees Twp.-0434	20.0 µg/L	No	0	B
227	Burlington Twp.-0306	20.0 µg/L	No	0	B-
228	Bellmawr Boro-0404	20.0 µg/L	No	1	B-
229	Randolph Twp.-1432	18.6 µg/L	No	3	B+
230	Brigantine City-0103	18.1 µg/L	No	3	B+
231	Spring Lake Boro-1348	18.1 µg/L	No	0	A-
232	East Windsor Twp.-1101	17.7 µg/L	No	1	A-
233	Colts Neck Twp.-1309	17.3 µg/L	No	17	D+
234	Longport Boro-0115	17.1 µg/L	No	3	A
235	Pequannock Twp.-1431	16.9 µg/L	No	10	C
236	Margate City-0116	16.7 µg/L	No	1	A
237	Barnegat Twp.-1533	15.9 µg/L	No	5	C+
238	Little Egg Harbor-1516	14.6 µg/L	No	1	A
239	Denville Twp.-1408	14.5 µg/L	No	4	F
240	Pine Beach Boro-1522	13.9 µg/L	No	0	A
241	Garfield City-0221	13.1 µg/L	No	13	B
242	Mahwah Twp-0233	12.2 µg/L	No	2	C-
243	Kearny Town-0907	11.2 µg/L	No	2	B+
244	Lyndhurst Twp-0232	11.2 µg/L	No	2	B+
245	Park Ridge Boro-0247	10.9 µg/L	No	2	C+
246	Saddle River Boro-0258	10.9 µg/L	No	2	C+
247	New Brunswick City-1214	10.8 µg/L	No	46	D+
248	Ventnor City-0122	10.0 µg/L	No	7	B+
249	Carney'S Point Twp.-1713	9.9 µg/L	No	3	B-
250	Oldmans Twp.-1706	9.9 µg/L	No	3	B-
251	Penns Grove Boro- 1707	9.9 µg/L	No	1	B+
252	Bayonne City-0901	9.5 µg/L	No	1	B+
253	Beach Haven Boro-1503	9.2 µg/L	No	1	A-
254	Edison Twp.-1205	9.1 µg/L	No	4	B-
255	Pine Hill Boro-0428	8.9 µg/L	No	0	A-
256	Phillipsburg Town-2119	8.8 µg/L	No	0	B+
257	Atlantic City-0102	8.6 µg/L	No	4	B
258	Berlin Boro-0405	8.6 µg/L	No	1	B+
259	Franklin Boro-1906	8.4 µg/L	No	6	B-
260	Totowa Boro-1612	7.9 µg/L	No	1	B-
261	Ocean City-0508	7.8 µg/L	No	0	A+
262	Rahway City-2013	7.2 µg/L	No	12	B
263	New Hanover Twp.-0325	7.2 µg/L	No	4	B+
264	Nutley Town-0716	6.8 µg/L	No	13	C
265	Cedar Grove Twp.-0704	6.7 µg/L	No	3	B
266	Manalapan Twp.-1326	6.5 µg/L	No	1	B+
267	Harrison Twp.-0808	6.4 µg/L	No	0	A-
268	Madison Boro-1417	6.1 µg/L	No	7	B-
269	Hanover Twp.-1412	6.0 µg/L	No	2	C-
270	Morris Plains Boro-1423	6.0 µg/L	No	2	C-
271	Morris Twp.-1422	6.0 µg/L	No	2	D+
272	Morristown Town-1424	6.0 µg/L	No	2	C-
273	Long Beach Twp.-1517	5.2 µg/L	No	0	F
274	North Arlington Boro-0239	4.9 µg/L	No	7	B+
275	Ewing Twp.-1102	4.3 µg/L	No	35	D
276	Hopewell Twp.1106-	4.3 µg/L	No	39	F
277	Lawrence Twp.-1107	4.3 µg/L	No	40	F
278	Trenton City-1111	4.3 µg/L	No	35	D
279	Roxbury Twp.-1436	4.3 µg/L	No	8	D+
280	Mantua Twp.-0810	4.3 µg/L	No	28	F
281	Avalon Boro-0501	3.9 µg/L	No	2	B
282	Stone Harbor Boro-0510	3.9 µg/L	No	2	B+
283	Washington Boro-2121	3.7 µg/L	No	0	B+
284	Paulsboro Boro-0814	3.7 µg/L	No	6	B+
285	Seaside Park Boro-1527	3.3 µg/L	No	1	A-
286	Harrison Town-0904	3.3 µg/L	No	3	B+
287	Buena Boro-0104	3.2 µg/L	No	1	A
288	Oakland Boro-0242	2.9 µg/L	No	2	B-
289	Sea Isle City-0509	2.6 µg/L	No	0	A-
290	Ocean Twp.-1520	2.5 µg/L	No	2	B+
291	Hoboken City-0905	2.4 µg/L	No	0	A-
292	Verona Boro-0720	2.3 µg/L	No	5	F
293	Jersey City-0906	2.2 µg/L	No	5	B
294	Mount Holly Twp.-0323	2.1 µg/L	No	0	B+
295	Ramsey Boro-0248	1.9 µg/L	No	56	F
296	Perth Amboy City--1216	1.9 µg/L	No	8	C+
297	Seaside Heights Boro-1526	1.7 µg/L	No	0	A-
298	Wayne Twp.-1614	1.0 µg/L	No	1	B+
299	Beachwood Boro-1504	0.9 µg/L	No	0	B-
300	Manasquan Boro-1327	0.7 µg/L	No	1	B
301	Highland Park Boro-1207	0.7 µg/L	No	4	B+
302	East Brunswick Twp.-1204	0.6 µg/L	No	17	F

FAQ

Frequently asked questions about manganese in New Jersey

Is manganese in New Jersey tap water harmful?

The EPA secondary MCL for manganese is 50 µg/L, set primarily for aesthetic reasons (taste, color, staining). 89 cities in New Jersey exceed the secondary MCL. However, emerging research links chronic manganese exposure above 50–100 µg/L to neurodevelopmental effects in children, including reduced IQ.

How can I remove manganese from my drinking water?

Oxidation filtration (such as greensand or birm filters) is the most common and effective method for removing manganese from well water. Water softeners using ion exchange also work well. Standard carbon filters provide limited manganese removal. If your water has a metallic taste or brown/black discoloration, manganese may be the cause.

What causes high manganese in New Jersey water?

Manganese occurs naturally in groundwater and surface water, particularly in areas with iron-rich geology. Low dissolved oxygen conditions (common in deep wells and reservoir bottom waters) increase manganese solubility. Industrial sources include mining, steel production, and battery manufacturing. Seasonal changes in reservoir water chemistry can cause manganese spikes.

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